Accession Number:

ADA263101

Title:

Anelastic Relaxations Associated with Local Disordering in Grain Boundaries

Descriptive Note:

Corporate Author:

FOREIGN AEROSPACE SCIENCE AND TECHNOLOGY CENTER WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1993-04-02

Pagination or Media Count:

14.0

Abstract:

Internal friction and micro-creep measurements were performed with high-purity Al bamboo-crystal specimens. The relaxation strength was found to decrease with the decrease of the temperature of measurement and became zero at about 0. 4T sub m, T sub m being melting temperature. This reflects the occurrence of local disordering in the bamboo boundary region at this temperature. This result conforms to the picture of grain boundary disordering constructed by atomic simulation studies.... Grain boundary disordering, Internal friction, Microcreep, High purity al.

Subject Categories:

  • Properties of Metals and Alloys
  • Crystallography
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE