Accession Number:

AD0261449

Title:

SOVIET PRECIPITATION-HARDENABLE STAINLESS STEELS

Descriptive Note:

Corporate Author:

LIBRARY OF CONGRESS WASHINGTON DC AEROSPACE TECHNOLOGY DIV

Personal Author(s):

Report Date:

1961-07-18

Pagination or Media Count:

1.0

Abstract:

T e article suggests a different thermomechanical method of treatment for X17H7YU steel Armco 17-7PH. According to present practice this steel is subjected to a 4-step heat treatment. It is first solution-annealed at 1100 C for 2 hr and air cooled. It is then conditioned twice at 700 C for 2 hr followed each time by air cooling. Finally, it is aged at 600 C for 4 hr and air cooled. Treated in this manner, X17H7YU HAS A NOTCH TOUGHNESS OF - KG-MSQ CM AND A HARDNESS OF Rockwell C. The suggested thermomechanical treatment consists of the same solution annealing at 1100 C for 1-2 hr, followed by brine cooling, cold rolling compression at room or sub-zero temperature, and aging at 450-600 C followed by brine cooling. This method is especially suitable for parts where cold working is one of the last operations. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE