Fundamental Mechanisms of Deformation and Fracture in High-Strength Bulk Metallic Glass Alloys and Their Composites

Abstract

The recent development of bulk metallic glasses (BMG's) offers the potential for metallic material systems with dramatically improved mechanical properties. Tensile strengths of 2 Gpa and toughnesses of up to 55 Mpav.m have been reported. These high strength and toughness values are accompanied by remarkably little plastic deformation. Until recently, little work has been undertaken to elucidate the fundamental deformation and fracture mechanisms of these alloys. This technical report describes a three year program of study designed to characterize the mechanisms of deformation, fracture and fatigue of a Zr-based BMG under a range of stress state, environmental and fatigue loading conditions.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2001
Accession Number
ADA392081

Entities

People

  • Reinhold H. Dauskardt

Organizations

  • Stanford University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Composite Materials
  • Crack Tips
  • Glass Transition Temperature
  • Heat Of Activation
  • Materials
  • Materials Science
  • Mechanical Properties
  • Metallic Glass
  • Plastic Deformation
  • Plastic Flow
  • Relaxation Time
  • Resistance
  • Shear Bands
  • Toughness
  • Transition Temperature
  • Transitions

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Surface Coatings Technology.
  • Systems Analysis and Design