THE PHYSICAL METALLURGY OF COBALT-BASE SUPERALLOYS

Abstract

A detailed picture is presented of the physical and chemical phenomena that affect the behavior of cobalt-base superalloys. Solid-solution strengthening is obtained from the high-melting metallic elements molybdenum, tungsten, tantalum, and columbium. These elements also participate in precipitation reactions involving their carbides. Precipitation of intermetallic compounds such as Ni3Ti is an important process in cobalt alloys containing appreciable amounts of nickel and titanium. The relationships among microstructure, heat treatment, and mechanical properties of the important commercial alloys are considered, and whenever possible, explained on the basis of the physical and chem cal processes that occur. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 06, 1962
Accession Number
AD0283356

Entities

People

  • A.m. Hall
  • H.j. Wagner

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Alloys
  • Chemical Compounds
  • Chemical Phenomena
  • Chemistry
  • Cobalt
  • Cobalt Alloys
  • Elements
  • Heat Treatment
  • Intermetallic Compounds
  • Materials Science
  • Mechanical Properties
  • Metallurgy
  • Physical Metallurgy
  • Precipitation
  • Solid Solutions
  • Superalloys

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.
  • Theoretical Analysis.