SOVIET PRECIPITATION-HARDENABLE STAINLESS STEELS

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-M/SQ 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)

Document Details

Document Type
Technical Report
Publication Date
Jul 18, 1961
Accession Number
AD0261449

Entities

Organizations

  • Library of Congress

Tags

DTIC Thesaurus Topics

  • Air Cooled
  • Annealing
  • Cold Working
  • Cooling
  • Heat Treatment
  • Mechanical Properties
  • Mechanical Working
  • Notch Toughness
  • Stainless Steel
  • Steel
  • Toughness

Fields of Study

  • Materials science

Readers

  • Combustion and Flow Dynamics.
  • Metallurgy