PROCESS DEVELOPMENT FOR DEFORMED METASTABLE AUSTENITIC ULTRAHIGH-STRENGTH STEEL.

Abstract

Anal trials were conducted to establish suitable hot-cold forging procedures for 300 M, HP 9-4, D6AC, 4340, AM-335, and H-11 steels. Using these procedures, screening studies were completed to select the three most promising steels for further investigation. The steels chosen were D6AC, H-11, and 4340. These will be examined for the effect of process variables on mechanical properties. D6AC and H-11 steels exhibited hardness improvements of from 4 to 6 Rockwell C units when hot-cold forged to 60 per cent reduction at 1000 F, as compared with conventional treatment; the improvement in 4340 steel was only about 2 to 3 Rockwell C units. Smaller hardness improvements were obtained when hot-cold forging was conducted at temperatures several hundred degrees higher. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1963
Accession Number
AD0415684

Entities

People

  • A.m. Sabroff
  • C.w. Marschall
  • F.w. Boulger
  • J.h. Gehrke

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Hardness
  • Mechanical Properties

Fields of Study

  • Materials science

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Powder metallurgy of Titanium alloys.
  • Psychometric Testing or Psychological Assessment.