On Slip and Yielding of Alloys with Lamellar Microstructures.

Abstract

The flow behavior of an alloy with a two-phase lamellar microstructure is analyzed. Based on the model presented, the macroscopic slip system and the yield strength are controlled by the ability of a slip system, once activated in the softer phase, to shear the plate-like harder phase. This ability to shear is controlled by the capacity of a specific slip system, together with the applied stress, to generate sufficient shear stress through the thickness of the harder phase to cause macroscopic flow. The yield stress and active macroscopic slip plane of an individual Widmanstatten colony of alpha-beta Ti alloy are analyzed to demonstrate the model. Comments are also made regarding the deformation of and crack formation in pearlitic steels in terms of the proposed model. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1977
Accession Number
ADA040971

Entities

People

  • Donald A. Koss
  • Kwai Chan

Organizations

  • Michigan Technological University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Alloys
  • Coordinate Systems
  • Cracks
  • Grain Size
  • Heat Treatment
  • Microstructure
  • Military Research
  • Modulus Of Elasticity
  • Pearlite
  • Schematic Diagrams
  • Shear Modulus
  • Shear Stresses
  • Steel
  • Stresses
  • Thickness
  • United States
  • United States Government

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Metallurgy
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).