Fatigue Behavior of Toughened Materials

Abstract

The mechanisms controlling the fatigue and fracture behavior of material toughened with ductile/tough phases are the focus of this work. This research is utilizing materials processed at WPAFB from the binary Nb-Si system, as well recently developed Nb-Ti-Hf-Si-Al-Cr (i.e. at GE CRD) base materials in order to determine the factors controlling the mechanical behavior under both monotonic and cyclic loading conditions. Considerable work has already demonstrated the positive effects of compositing Nb5 Si3 with Nb on the toughness of such materials, although relatively little is known regarding the cyclic fatigue behavior of the materials obtained from the binary Nb-Si systems as well as those obtained via alloying. A complementary AASERT program investigated the fracture and fatigue behavior of bulk metallic glasses produced at California Institute of Technology and Howmet, Inc.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2000
Accession Number
ADA379268

Entities

People

  • John J. Lewandowski
  • Robert M. Aikin

Organizations

  • Case Western Reserve University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Amorphous Materials
  • California
  • Chemistry
  • Composite Materials
  • Engineering
  • Failure Mode And Effect Analysis
  • Grain Size
  • High Pressure
  • High Temperature
  • Hydrostatic Pressure
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanics
  • Notch Toughness
  • Pressurization
  • Toughness

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Structural Health Monitoring of Composite Structures.
  • Technical Research and Report Writing.