United States Patent [19] [H] Patent Number: 4,518,442
Chin [45] Date of Patent: May 21, 1985
[54] METHOD OF PRODUCING COLUMNAR
CRYSTAL SUPERALLOY MATERIAL WITH
CONTROLLED ORIENTATION AND
PRODUCT
[75] Inventor: Herbert A. Chin, West Palm Beach, Fla.
[73] Assignee: United Technologies Corporation, Hartford, Conn.
[21] Appl. No.: 325,248
[22] Filed: Nov. 27, 1981
[51] Int. CI.3 C22F 1/10; C22C 19/03
[52] U.S. CI 148/11.5 N; 148/11.5 P;
148/404
[58] Field of Search 148/11.5 N, 11.5 P,
148/404, 426, 427, 428, 429, 409, 410
[56] References Cited
U.S. PATENT DOCUMENTS
3.346,427 10/1967 Baldwin, Jr. et al 148/11.5
3,787.205 1/1974 Church 75/226
3,902,900 9/1975 Restall 75/171
3,920,489 11/1975 Buchanan 148/32
3,982,973 9/1976 Peters et al 148/11.5 N
3,992,161 11/1976 Cairns et al 29/182.5
4,002,503 1/1977 Bourne et al 148/11.5 P
Primary Examiner—R. Dean
Attorney, Agent, or Firm—Charles E. Sohl
[57] ABSTRACT
A processing sequence is described for producing specific controlled elongated oriented crystal structures in nickel base superalloys. The method is performed in the solid state. Superalloy material is provided in a dense workable form. The material is cold straight rolled and cold cross rolled with intermediate anneals. This sequence produces a particular texture or preferred orientation in the rolled article. This textured article is then directionally recrystallized to produce the desired final microstructure comprised of aligned elongated grains of a particular controllable orientation.
9 Claims, 10 Drawing Figures
