US3855012A - Processing copper base alloys - Google Patents
Processing copper base alloys Download PDFInfo
- Publication number
- US3855012A US3855012A US00402127A US40212773A US3855012A US 3855012 A US3855012 A US 3855012A US 00402127 A US00402127 A US 00402127A US 40212773 A US40212773 A US 40212773A US 3855012 A US3855012 A US 3855012A
- Authority
- US
- United States
- Prior art keywords
- cold rolling
- copper
- heat treatment
- hours
- copper base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 26
- 229910052802 copper Inorganic materials 0.000 title claims description 26
- 239000010949 copper Substances 0.000 title claims description 26
- 239000000956 alloy Substances 0.000 title claims description 23
- 229910045601 alloy Inorganic materials 0.000 title claims description 20
- 238000000034 method Methods 0.000 claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000005097 cold rolling Methods 0.000 claims abstract description 21
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000007858 starting material Substances 0.000 claims description 4
- 238000005098 hot rolling Methods 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 241001275902 Parabramis pekinensis Species 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
Definitions
- a further object of the present invention is to provide a process as aforesaid which is suitable for manufacturing parts while allowing retention of the desired high yield strength properties.
- a further object of the present invention is to provide a process as aforesaid which is simple, inexpensive, easily practiced commercially and versatile.
- the starting plate material may use a variety of materials, such as hot rolled plate, fully recrystallized plate or continuously cast plate.
- the material produced in accordance with the process of the present invention may be utilized to manufacture parts.
- the yield strength properties fall off due to the cold work which is given to the part as a result of the forming operation. Therefore, a further thermal treatment may be per formed on the formed part at a temperature of from 100 to 350C for from 30 minutes to 8 hours in order to restore the desirable high 0.01% offset yield strength. 1
- the process of the present invention readily obtains high 0.01% offset yield strength in copper base alloys in combination with good elongation. Furthermore, it can be seen that the process is simple and easy to perform and inexpensive in a commercial operation.
- the process of the present invention may be readily utilized with any copper or copper base alloy material.
- any copper or copper base alloy material may be readily utilized.
- a particularly suitable series of copper alloys for use in the process of the present invention are the phosphor bronzes, which are copper base alloys containing from 1 to 10% tin, such as CDA copper alloy No. 505, 510, 521 and 524.
- the iron containing copper alloys containing from 1 to 5% iron may be readily utilized, such as CDA copper alloy 194 and 195.
- the nickelsilvers are desirably suitable for use in the process of the present invention.
- These alloys are copper base alloys containing from about 10 to 20% nickel and from about 5 to 40% zinc, such as CDA copper alloy No. 762, 752, and 745-.
- a further series of copper alloys which may be desirably utilized include the aluminumbronzes and brasses containing from 2 to 13% aluminum, such as CDA copper alloy 638'and 688.
- CDA copper alloy 638'and 688 Naturally, many other copper alloys may be desirably utilized in the process of the present invention.
- any copper base alloy may be conveniently utilized, such as: The CDA 2XX series, brasses containing from about 5 to 40% zinc; copper alloys containing beryllium; the CDA 4XX series, tin brasses containing tin and zinc; silicon-bronzes; manganese-zinc containing copper alloys as CDA alloys 669 and 672; and cupronickels containing from about 5 to 35% nickel as CDA alloys 706 and 715.
- the CDA 2XX series brasses containing from about 5 to 40% zinc
- copper alloys containing beryllium
- the CDA 4XX series tin brasses containing tin and zinc
- silicon-bronzes silicon-bronzes
- manganese-zinc containing copper alloys as CDA alloys 669 and 672
- cupronickels containing from about 5 to 35% nickel as CDA alloys 706 and 715.
- the starting material should be a copper or copper base alloy material in plate form having a thickness of from 0.300 inch to 1.800 inches.
- the plate material may be obtained by any desired method. For example,
- the cold rolled plate may then be annealed to the fully recrystallized condition.
- the process of the present invention cold rolls the plate material in at least three cold rolling cycles to a total reduction of at least with an intermediate heat treatment of from to 350C for from 1 to'4 hours between each cold rolling cycle.
- the rolling reduction in each cold rolling cycle should be at least 25% and the total reduction in all cold rolling cycles is preferably greater than 85%.
- the material may be subjected to a final low temperature heat treatment at final gage.
- This heat treatment step should be for from 30 minutes to 8 hours at a temperature of from 100 to 350C.
- parts may be readily formed from the thermally treated strip.
- formed parts may lose a portion of the desirably high yield properties due to the cold work which they have been subjected to.
- the formed parts may be given a further low thermal temperature treatment of from 30 minutes to 8 hours at temperatures between 800C and 350C.
- the process of the present invention also obtains numerous advantages.
- the material of the present invention retains the finely structured cold worked matrix.
- the process of the present invention maintains and strengthens the deformation texture, resulting in improved texture strengthening of the sheet and formed part.
- the process of the present invention allows sufficient recovery of ductibility at a marginal strength loss in order to enhance cold rolla- I bility for the additional cold rolling steps and for subsequent forming of the final material.
- a copper base alloy ingot was provided having the following composition: tin, 4.4%; phosphorus, 0.07%; balance essentially copper.
- the ingot was initially hot rolled and milled to 0.450 inch gage and was processed to 0.010 inch gage utilizing the processing schedules A and B set forth below.
- Process schedule A involved cold rolling the material 97.8% directly to 0.010 inch gage. This was done for comparative purposes and does not represent. the process of the present invention.
- Process schedule B involved a total reduction of 97.8% to 0.010 inch gage and utilized four cold rolling cycles with three in process heat treatment steps as follows: cold roll 90.0% to 0.045 inch, heat treat for 2 hours at 250C, cold roll 40.0% to 0.027 inch, heat treat for 2 hours at 250C, cold roll 40.8% to 0.016 inch, heat treat for 2 hours at 250C and finally cold roll 37.5% to the final gage of 0.010 inch.
- the total reduction and final gage are the same for process schedules A and B.
- Tensile properties were determined for the longitudinal and transverse sheet orientations for thematerial obtained by the two foregoing processing schedules.
- the properties for process schedule A are listed in Table I. while those for process schedule B are presented in Table II.
- the properties of the as-cold rolled condition are identified in the tables by the designation CR. Properties were also determined on cold rolled material subjected to a final low temperature heat treatment for a period of 2 hours at temperatures 200, 250, 275 or 300C. These heat treated properties are also presented in Tables I and II.
- a method for improved yield strength characteristics in copper or copper base alloys which comprises:
- step (B) 2. A method according to claim 1 wherein the total reduction in step (B) is at least 85%.
- step (B) rolled to plate thickness.
Abstract
Processing copper alloys to obtain an improved combination of yield strength and elongation. The process is characterized by cold rolling with interpass heat treatments to a total reduction of at least 70%, followed by a final heat treatment under specified conditions.
Description
United States Patent [191 Shapiro et al.
[451 Dec. 17, 1974 PROCESSING COPPER BASE ALLOYS [75] Inventors: Stanley Shapiro, New Haven;
Ronald N. Caron, Branford, both of [21] Appl. No.: 402,127
[52] U.S. Cl 148/115 R [51] Int. Cl. C22f 1/08 [58] Field of Search 148/115 R [56] References Cited UNITED STATES PATENTS 3,046,166 7/1962 Hartmann l48/l1.5 R
Primary ExaminerW. Stallard Attorney, Agent, or FirmDavid A. Jackson; Robert H. Bachman 57 ABSTRACT Processing copper alloys to obtain an improved combination of yield strength and elongation. The process is characterized by cold rolling with interpass heat treatments to a total reduction of at least 70%, followed by a final heat treatment under specified conditions.
6 Claims, No Drawings PROCESSING COPPER BASE ALLOYS BACKGROUND OF THE INVENTION The process of the present invention is concerned with treating copper base alloys in order to obtain an improved combination of yield strength characteristics and elongation.
Since most engineering components, springs in particular, must operate in the elastic regime, information regarding the onset of plastic flow in metal systems has long been one of the most important engineering design criteria. The mechanical property of great interest in this region is the elastic limit. However, there are practical difficulties in determining the elastic limit with information from the engineering tensile test. Since the elastic limit can be as much as -15 ksi greater than the proportional limit, which is the stress at which the stress-strain curve becomes nonlinear in the elastic regime, determination of the elastic limit would require that each tensile specimen be alternatively loaded and unloaded to increasingly higher loads until that load is reached which produces a permanent set in the specimen.
However, the 0.01% offset yield strength approximates and is frequently used in place of the elastic limit in spring design. Thus, for engineering applications in which little or no plastic flow can be tolerated an enhanced 0.01% offset yield strength would lead to improved materials utilization and performance.
Accordingly, it is a principal object of the present invention to provide a process for obtaining improved yield strength characteristics in copper base alloys, particularly high 0.01% offset yield strength.
It is a further object of the present invention to provide a process as aforesaid which obtains an improved combination of 0.01% offset yield strength and percent elongation.
A further object of the present invention is to provide a process as aforesaid which is suitable for manufacturing parts while allowing retention of the desired high yield strength properties.
A further object of the present invention is to provide a process as aforesaid which is simple, inexpensive, easily practiced commercially and versatile.
Further objects and advantages of the present invention will appear hereinbelow.
SUMMARY OF THE INVENTION In accordance with the process of the present invention it has been found that the foregoing objects and advantages may be readily obtained. The process of the present invention comprises:
A. providing a copper or copper base alloy material in plate form having a thickness of from 0.300 inch to 1,800 inch;
B. cold rolling said material in at least three cold rolling cycles to a total reduction of at least 70% and preferably at least 85%, with an intermediate heat treatment between each cold rolling cycle of from 100 to 350C for from 1 to 4 hours, provided that the rolling reduction in each cold rolling cycle is at least and C. subjecting said material to a final heat treatment after the last cold rolling cycle, said final heat treatment being at a temperature of from 100 to 350C for from minutes to 8 hours.
The starting plate material may use a variety of materials, such as hot rolled plate, fully recrystallized plate or continuously cast plate.
The material produced in accordance with the process of the present invention may be utilized to manufacture parts. When the part is manufactured, the yield strength properties fall off due to the cold work which is given to the part as a result of the forming operation. Therefore, a further thermal treatment may be per formed on the formed part at a temperature of from 100 to 350C for from 30 minutes to 8 hours in order to restore the desirable high 0.01% offset yield strength. 1
The process of the present invention readily obtains high 0.01% offset yield strength in copper base alloys in combination with good elongation. Furthermore, it can be seen that the process is simple and easy to perform and inexpensive in a commercial operation.
Further advantages of the instant process will appear hereinbelow.
DETAILED DESCRIPTION The process of the present invention, as indicated hereinabove, may be readily utilized with any copper or copper base alloy material. Thus, commercial purity or pure copper may be readily employed. A particularly suitable series of copper alloys for use in the process of the present invention are the phosphor bronzes, which are copper base alloys containing from 1 to 10% tin, such as CDA copper alloy No. 505, 510, 521 and 524. In addition, the iron containing copper alloys containing from 1 to 5% iron may be readily utilized, such as CDA copper alloy 194 and 195. In addition the nickelsilvers are desirably suitable for use in the process of the present invention. These alloys are copper base alloys containing from about 10 to 20% nickel and from about 5 to 40% zinc, such as CDA copper alloy No. 762, 752, and 745-. A further series of copper alloys which may be desirably utilized include the aluminumbronzes and brasses containing from 2 to 13% aluminum, such as CDA copper alloy 638'and 688. Naturally, many other copper alloys may be desirably utilized in the process of the present invention. Generally, any copper base alloy may be conveniently utilized, such as: The CDA 2XX series, brasses containing from about 5 to 40% zinc; copper alloys containing beryllium; the CDA 4XX series, tin brasses containing tin and zinc; silicon-bronzes; manganese-zinc containing copper alloys as CDA alloys 669 and 672; and cupronickels containing from about 5 to 35% nickel as CDA alloys 706 and 715.
The starting material should be a copper or copper base alloy material in plate form having a thickness of from 0.300 inch to 1.800 inches. The plate material may be obtained by any desired method. For example,
one may start from a copper base alloy ingot which is hot or cold rolled to plate thickness. The cold rolled plate may then be annealed to the fully recrystallized condition. Alternatively, one may provide a continuously cast copper base alloy plate as starting material.
The process of the present invention cold rolls the plate material in at least three cold rolling cycles to a total reduction of at least with an intermediate heat treatment of from to 350C for from 1 to'4 hours between each cold rolling cycle. The rolling reduction in each cold rolling cycle should be at least 25% and the total reduction in all cold rolling cycles is preferably greater than 85%. Thus, one may have the following sequence: cold reduction; heat treatment; cold reduction, heat treatment; and cold reduction. Alternatively, one may desirably utilize four cold rolling cycles with three intermediate heat treatment steps.
Following the final cold reduction step, the material may be subjected to a final low temperature heat treatment at final gage. This heat treatment step should be for from 30 minutes to 8 hours at a temperature of from 100 to 350C.
In the heat treatment steps generally longer times are used with lower temperatures.
It is a particular advantage of the process of the present invention that parts may be readily formed from the thermally treated strip. We have found that formed parts may lose a portion of the desirably high yield properties due to the cold work which they have been subjected to. In order to restore the high yield properties, the formed parts may be given a further low thermal temperature treatment of from 30 minutes to 8 hours at temperatures between 800C and 350C.
In the heat treatment steps generally longer times are used with lower temperatures.
In addition to imparting improved 0.01% offset yield strength, the process of the present invention also obtains numerous advantages. The material of the present invention retains the finely structured cold worked matrix. In addition, the process of the present invention maintains and strengthens the deformation texture, resulting in improved texture strengthening of the sheet and formed part. Still further, the process of the present invention allows sufficient recovery of ductibility at a marginal strength loss in order to enhance cold rolla- I bility for the additional cold rolling steps and for subsequent forming of the final material.
The process of the present invention and advantages obtained thereby may be-readily understood from a consideration of the following illustrative examples.
EXAMPLES A copper base alloy ingot was provided having the following composition: tin, 4.4%; phosphorus, 0.07%; balance essentially copper. The ingot was initially hot rolled and milled to 0.450 inch gage and was processed to 0.010 inch gage utilizing the processing schedules A and B set forth below.
Process schedule A involved cold rolling the material 97.8% directly to 0.010 inch gage. This was done for comparative purposes and does not represent. the process of the present invention.
Process schedule B involved a total reduction of 97.8% to 0.010 inch gage and utilized four cold rolling cycles with three in process heat treatment steps as follows: cold roll 90.0% to 0.045 inch, heat treat for 2 hours at 250C, cold roll 40.0% to 0.027 inch, heat treat for 2 hours at 250C, cold roll 40.8% to 0.016 inch, heat treat for 2 hours at 250C and finally cold roll 37.5% to the final gage of 0.010 inch. Thus, the total reduction and final gage are the same for process schedules A and B.
Tensile properties were determined for the longitudinal and transverse sheet orientations for thematerial obtained by the two foregoing processing schedules. The properties for process schedule A are listed in Table I. while those for process schedule B are presented in Table II. The properties of the as-cold rolled condition are identified in the tables by the designation CR. Properties were also determined on cold rolled material subjected to a final low temperature heat treatment for a period of 2 hours at temperatures 200, 250, 275 or 300C. These heat treated properties are also presented in Tables I and II.
Comparisons of the tensile properties of the material obtained by process schedule A with those obtained by process schedule B show the improvement of the final heat treated 0.01% offset yield strength obtainable with the process schedule of the present invention. Furthermore, when compared at equivalent 0.01% offset yield strengths, the percent elongation values of material processed according to schedule B are superior to those of scedule A.
TABLE I TENSILE PROPERTIES OF PHOSPHOR BRONZE PROCESSED ACCORDING TO SCHEDULE A Strengths in ksi 0.01% 0. 1% 0.2% Percent Material Y8 Y8 Y8 Elongation Longitudinal CR 97.8% 77 1 13 121 130 05 200C-2 Hours 86 112 126 0.5 250C-2 Hours 99 100 109 3.4 275C-2 Hours 74 96 101 103 6.7 300C-2 Hours 64 85 89 92 15.8 Transverse 7 CR 97.8% 200C-2 Hours 96 132 1 1 151 1.5 250C-2 Hours 88 118 4 8 275C-2 Hours 300C-2 Hours 72 8 104 13.8
TABLE '11 TENSILE PROPERTIES OF PHOSPHOR BRONZE PROCESSED ACCORDING TO SCHEDULE B Strengths in ksi 0.01% 0. 1% 0.2% Percent Material Y5 Y8 YS UTS Elon gation Longitudinal CR 97.8% 83 116 123 I29 0.5 200C-2 Hours 86 1 l5 125 2.5 250C-2 Hours 85 102 109 5.9 175C-2 Hours 76 99 103 106 7.9 300C-2 Hours 64 85 88 90 17.2 Transverse CR 97.8% 90 126 137 0.5 200C-2 Hours 101 131 138 144 0.5 250C-2 Hours 96 122 128 131 3.5 275C-2 Hours 96 119 122 124 3.6 300C-2 Hours 75 97 101 103 13.2
This invention may be embodied in other forms or carried out in other ways without departing from the spirit or essential characteristics thereof. The present embodiment is therefore to be considered as in all respects illustrative and not restrictive, the scope of the invention being indicated by the appended claims, and all changes which come within the meaning and range of equivalency are intended to be embraced therein.
What is claimed is:
l. A method for improved yield strength characteristics in copper or copper base alloys which comprises:
A. providing a copper base alloy selected from the group consisting of the phosphor bronzes and copper alloys containing from l-5% iron, in plate form having a thickness of from 0.300 to 1.800 inches;
B. cold rolling said material in at least three cold rolling cycles to a total reduction of at least 70% with an intermediate heat treatment of from 100 to 350C for from 1 to 4 hours between each cold rolling cycle, provided that the rolling reduction in each cold rolling cycle is at least 25% and C. subjecting said material to a final heat treatment after the last cold rolling cycle, said final heat treatment being at 100 to 350C for from 30 minutes to 8 hours.
2. A method according to claim 1 wherein the total reduction in step (B) is at least 85%.
3. A method according to claim 2 wherein step (B) rolled to plate thickness.
Claims (6)
1. A METHOD FOR IMPROVED YIELD STRENGTH CHARACTERISTICS IN COPPER OR COPPER BASE ALLOYS WHICH COMPRISES: A. PROVIDING A COPPER BASE ALLOY SELECTED FROM THE GROUP CONSISTING OF THE PHOSPHOR BRONZES AND COPPER ALLOYS CONTIANING FROM 1-5% IRON, IN PLATE FORM HAVING A THICKNESS OF FROM 0.300 TO 1.800 INCHES; B. COLD ROLLING SAID METERIAL IN AT LEAST THREE COLD ROLLING CYCLES TO A TOTAL REDUCTION OF AT LEAST 70% WITH AN INTERMEDIATE HEAT TREATMENT OF FROM 100* TO 350*C FOR FROM 1 TO 4 HOURS BETWEEN EACH COLD ROLLING CYCLE, PROVIDED THAT THE ROLLING REDUCTION IN EACH COLD ROLLING CYCLE IS AT LEAST 25% AND C. SUBJECTING SAID MATERIAL TO A FINAL HEAT TREATMENT AFTER THE LAST COLD ROLLING CYCLE, SAID FINAL HEAT TREATMENT BEING AT 100: TO 350*C FOR FROM 30 MINUTES TO 8 HOURS.
2. A method according to claim 1 wherein the total reduction in step (B) is at least 85%.
3. A method according to claim 2 wherein step (B) includes four cold rolling cycles with three intermediate heat treatment cycles.
4. A method according to claim 1 wherein the starting material in step (A) is provided by hot rolling an ingot to plate form having a thickness of from 0.300 to 1.800 inches.
5. A method according to claim 2 wherein said copper alloy contains iron in an amount of from 1 to 5%.
6. A method according to claim 1 wherein said starting material is a copper base alloy ingot which is cold rolled to plate thickness.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00402127A US3855012A (en) | 1973-10-01 | 1973-10-01 | Processing copper base alloys |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00402127A US3855012A (en) | 1973-10-01 | 1973-10-01 | Processing copper base alloys |
Publications (1)
Publication Number | Publication Date |
---|---|
US3855012A true US3855012A (en) | 1974-12-17 |
Family
ID=23590643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00402127A Expired - Lifetime US3855012A (en) | 1973-10-01 | 1973-10-01 | Processing copper base alloys |
Country Status (1)
Country | Link |
---|---|
US (1) | US3855012A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4395295A (en) * | 1982-05-28 | 1983-07-26 | Olin Corporation | Process for treating copper-aluminum-silicon alloys to improve fatigue strength |
US4728372A (en) * | 1985-04-26 | 1988-03-01 | Olin Corporation | Multipurpose copper alloys and processing therefor with moderate conductivity and high strength |
WO1994014986A1 (en) * | 1992-12-21 | 1994-07-07 | Ontario Hydro | Thermomechanical processing of metallic materials |
WO1999007902A1 (en) * | 1997-08-04 | 1999-02-18 | Integran Technologies Inc. | Metallurgical method for processing nickel- and iron-based superalloys |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3046166A (en) * | 1959-07-01 | 1962-07-24 | Olin Mathieson | Treatment of brass |
-
1973
- 1973-10-01 US US00402127A patent/US3855012A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3046166A (en) * | 1959-07-01 | 1962-07-24 | Olin Mathieson | Treatment of brass |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4395295A (en) * | 1982-05-28 | 1983-07-26 | Olin Corporation | Process for treating copper-aluminum-silicon alloys to improve fatigue strength |
US4728372A (en) * | 1985-04-26 | 1988-03-01 | Olin Corporation | Multipurpose copper alloys and processing therefor with moderate conductivity and high strength |
WO1994014986A1 (en) * | 1992-12-21 | 1994-07-07 | Ontario Hydro | Thermomechanical processing of metallic materials |
US5702543A (en) * | 1992-12-21 | 1997-12-30 | Palumbo; Gino | Thermomechanical processing of metallic materials |
US5817193A (en) * | 1992-12-21 | 1998-10-06 | Palumbo; Gino | Metal alloys having improved resistance to intergranular stress corrosion cracking |
WO1999007902A1 (en) * | 1997-08-04 | 1999-02-18 | Integran Technologies Inc. | Metallurgical method for processing nickel- and iron-based superalloys |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4049426A (en) | Copper-base alloys containing chromium, niobium and zirconium | |
US3287185A (en) | Process for improving alloys based on aluminum, zinc and magnesium, and alloys obtained thereby | |
JP2007527466A (en) | Beta titanium alloy, process for producing hot rolled products from this type of alloy, and use thereof | |
US3882712A (en) | Processing copper base alloys | |
US3346427A (en) | Dispersion hardened metal sheet and process | |
US3039867A (en) | Copper-base alloys | |
US3046166A (en) | Treatment of brass | |
GB1566776A (en) | Processing chromium-containing precipitation hardenable copper base alloys | |
US3720551A (en) | Method for making a dispersion strengthened alloy article | |
US2257708A (en) | Method of working and heat treating cu-be alloys | |
US3855012A (en) | Processing copper base alloys | |
DE2809561A1 (en) | COPPER ALLOY WITH GOOD ELECTRICAL CONDUCTIVITY AND GOOD MECHANICAL PROPERTIES | |
US3333989A (en) | Aluminum base alloy plate | |
US2596485A (en) | Titanium base alloy | |
US2126827A (en) | Copper-cobalt-zinc alloy | |
EP0156995B1 (en) | Aluminum-lithium alloy (3) | |
US3341373A (en) | Method of treating zirconium-base alloys | |
US3008857A (en) | Process for the production of grain oriented magnetizable strips and sheets | |
US3985589A (en) | Processing copper base alloys | |
US3061427A (en) | Alloy of titanium | |
US4014716A (en) | Wrought brass alloy having a low spring back coefficient and shape memory effect | |
US3653980A (en) | Method of obtaining exceptional formability in aluminum bronze alloys | |
JPS5826425B2 (en) | Manufacturing method for high-strength aluminum alloy with excellent mechanical properties in the thickness direction | |
JPS61264158A (en) | Low carbon steel bar or wire rod for cold forging | |
US3194693A (en) | Process for increasing mechanical properties of titanium alloys high in aluminum |