Structure and Property Control through Rapid Quenching of Liquid Metals

Abstract

The first results of the processing of coarse metal powders of maraging 300 and IN 100 are reported. The effect of cooling rates on the dendrite structure of maraging 300 alloy has been investigated in a wide range of cooling rates. The structure of atomized particles are presented and their cooling rates are derived from the dendrite arm spacings. The size and distribution of inclusions in a commercial 300 grade maraging has been determined and related to the mechanical properties (tensile and fatigue). The analysis of the stress and strain conditions around an inclusion as a function of the overall state of stress is being investigated in order to determine the crack initiation criteria.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1971
Accession Number
AD0718902

Entities

People

  • Ali S. Argon
  • Merton C. Flemings
  • Nicholas J. Grant
  • Regis M. N. Pelloux

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Atomization
  • Chemical Synthesis
  • Chemistry
  • Dendritic Structure
  • Heat Energy
  • Heat Of Fusion
  • Heat Transfer
  • Heat Transmission
  • Heat Treatment
  • Materials
  • Materials Engineering
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Particles
  • Solid Solutions

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Space