Solid Solution Strengthening and Fundamental Design of Titanium Alloys

Abstract

Phase stabilization and solid solution strengthening in titanium alloys are discussed from an electronic viewpoint. Based on the structure dependence of cohesive energy, we rationalize the alpha and beta-stabilization of titanium as produced by alloying with nontransition and transition metals, respectively; and point out that only the addition of alpha-stabilizers will yield significant strengthening effect. The preference of multicomponent alloying, i.e., adding several nontransition metal solutes to titanium or otherwise beta-stabilized alloys, can also be justified from the concept to be described. Correlations between physical and mechanical properties of prototype systems (Ti-Al, Ti-Ga, Ti-Sn, Ti-Al-Ga, Ti-Mo, and Ti-Mo-Fe-Al) are presented to demonstrate the validity of the fundamental approach, which should eventually develop into useful alloy design criteria.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1972
Accession Number
AD0754240

Entities

People

  • E. W. Collings
  • H. L. Gegel
  • J. C. Ho

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Band Structures
  • Crystal Structure
  • Elastic Properties
  • Energy Bands
  • Heat Energy
  • Materials
  • Materials Laboratories
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Phase Diagrams
  • Solid Solutions
  • Tensile Strength
  • Thermodynamic Properties
  • Transition Metals
  • Transition Temperature

Fields of Study

  • Materials science
  • Physics

Readers

  • Powder metallurgy of Titanium alloys.
  • Systems Analysis and Design

Technology Areas

  • Microelectronics