A PROCESS FOR INCREASING THE STRENGTH AND TOUGHNESS OF AFC 77 BY AUSTENITE GRAIN REFINEMENT,

Abstract

A process has been developed for refining the austenite grain size of a martensitic stainless steel, AFC 77, by deformation in the tempered martensitic condition. Deformation above 25% results in considerable grain refinement during subsequent austenitizing. Increases in yield strength of 20 to 60 ksi have been obtained with no loss of toughness. For tempering treatments at 500F and 700F both strength and toughness are increased. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 18, 1968
Accession Number
AD0670462

Entities

People

  • D. Webster

Organizations

  • Boeing Commercial Airplanes

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Alloys
  • Austenite
  • Chemical Compounds
  • Grain Size
  • Iron Alloys
  • Mechanical Properties
  • Metallic Compounds
  • Physical Properties
  • Refining
  • Stainless Steel
  • Steel
  • Tempering
  • Toughness
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Metallurgy