Accession Number:

ADA031808

Title:

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

Descriptive Note:

Final rept. 1 Oct 71-31 Jul 76,

Corporate Author:

MICHIGAN TECHNOLOGICAL UNIV HOUGHTON

Personal Author(s):

Report Date:

1976-06-30

Pagination or Media Count:

35.0

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.

Subject Categories:

  • Metallurgy and Metallography
  • Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE