Alloy Development, Processing and Characterization of Devitrified Titanium Base Microcrystalline Alloys.

Abstract

Principles that govern metastability in rapidly solidified Ti alloys have been investigated with respect to solid solubility and phase transformation. Subsequent heat treatment in ternary Ti alloys results in precipitation reaction between group IIIA or IVA elements and rare earth metals in the absence of Ti. The Ostwald ripening of these binary dispersoids (rare earth metals Y, La, Er - Al or Sn compounds) has been and is being studied. Characteristics such as transient coarsening behavior and very slow coarsening in these dispersoids were identified. Mechanical properties (hardness) of alloy ribbon and splat were studied through isochronal and isothermal heat treatment. The alloy ingot was consolidated from alloy flakes by HIPing and is being studied with respect to mechanical properties. (Author).

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1984
Accession Number
ADA149609

Entities

People

  • S. H. Whang

Organizations

  • Northeastern University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Cellular Structures
  • Chemical Analysis
  • Chemistry
  • Crystal Structure
  • Dispersion Hardening
  • Energy
  • Hardness
  • Heat Energy
  • Heat Transfer
  • Heat Treatment
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanical Properties
  • Phase Transformations
  • Rare Earth Elements
  • Solid Solutions

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.