Relation between Electronic Structure and the Mechanical Properties of Body-Centered Cubic Metals.

Abstract

The objective of this program was the understanding of the role of alloying elements in promoting ductility in BCC metals. The program considered the roles of both increased cohesive strength of solids and enhanced plastic deformation in improving the resistance of a solid to fracture. Various approaches were used to evaluate changes that could affect the fracture behavior. These included estimates of true surface energy and fracture stress using interatomic potential functions, and the effect of plastic deformation using a model crack that allowed plastic deformation at the crack tip. Measurements were made of elastic constants, magnetic susceptibility, and fracture energies of pure metals and alloys. Several alloys were studied including Fe-Si, W-Re, W-Ta, Nb-Zr, and Nb-Hf.

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Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1976
Accession Number
ADA031808

Entities

People

  • D. F. Stein
  • G. W. Shannette

Organizations

  • Michigan Technological University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Crack Tips
  • Crystal Lattices
  • Crystal Structure
  • Crystals
  • Ductility
  • Elastic Properties
  • Energy
  • Mechanical Properties
  • Mechanics
  • Physical Properties
  • Plastic Deformation
  • Plastic Properties
  • Solid Solutions
  • Surface Energy
  • Transition Metals
  • Transition Temperature
  • Transitions

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Microelectronics