Ductile Failure.

Abstract

The aim of this work on the ductile failure is to provide a framework for quantitatively relating macroscopic measures of fracture toughness and ductility to micro-structural mechanisms of ductile fracture. Microvoid nucleation and growth is the principal mechanism of ductile fracture in metals; the voids and mainly nucleate at second phase particles, by particle cracking or by decohesion of the particle-matrix interface, and final rupture involves the growth of neighboring voids to coalescence. Although the role of void nucleation and growth in ductile failure of metals is now well known, the details of the mechanism governing this failure process are not fully understood. A detailed characterization of porosity evolution is necessary to relate microstructural descriptions of the ductile rupture process quantitatively to macroscopic measures of ductility.

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Document Details

Document Type
Technical Report
Publication Date
Sep 28, 1987
Accession Number
ADA189429

Entities

People

  • A. S. Kushner

Organizations

  • Brown University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Applied Mechanics
  • Boundaries
  • Charpy Impact Tests
  • Crack Tips
  • Cracks
  • Ductility
  • Elements
  • Engineering
  • Failure Mode And Effect Analysis
  • Grain Boundaries
  • Materials
  • Mechanics
  • Military Research
  • New York
  • Particles
  • Strain Rate
  • Stresses

Readers

  • Materials Science (Mechanical Engineering).
  • Theoretical Analysis.