Advances in the Development of Processing - Microstructure Relations for Titanium Alloys (Postprint)

Abstract

Advances in the fundamental understanding of microstructure evolution and plastic flow during primary and secondary processing of titanium alloys are summarized. Examples focus on the recrystallization of the beta phase and spheroidization of alpha lamellae during the breakdown of alpha/beta titanium alloys, challenges in the rolling of foil of alpha/beta and gamma-TiAl alloys, and the effect of microstructure and composition on the superplastic flow behavior of alpha/beta titanium alloys. Particular attention is given to models describing the refinement (or coarsening) of microstructural scale and non-uniformities that may impact forming response during operations such as rolling of sheet and superplastic forming. Current understanding of the persistence of microstructural anomalies such as microtextured regions (aka macrozones) is also described. Finally, recent developments in the characterization of such features via microscopy and ultrasonics are discussed.

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Document Details

Document Type
Technical Report
Publication Date
May 06, 2016
Accession Number
AD1028166

Entities

People

  • Adam L. Pilchak
  • Sheldon Lee Semiatin

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Alloys
  • Friction Stir Welding
  • Heat Treatment
  • Manufacturing
  • Materials
  • Materials Engineering
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Metals
  • Particle Size
  • Plastic Flow
  • Plastic Properties
  • Titanium
  • Titanium Alloys

Fields of Study

  • Materials science

Readers

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