Ordering and the Strength of an Aligned Ag3Mg-AgMg Eutectic.

Abstract

A fine lamellar structure with interlamellar spacings from 1 to 7 microns has been produced by directional solidification of an Ag3Mg-AgMg eutectic alloy. The tensile properties were measured as a function of test-temperature, interlamellar spacing, lambda, and degree of order in the AgMg phase. The dependence of flow stress on lambda to the minus 1/2 power increased sharply with ordering of Ag3Mg and this strengthening persisted at elevated temperatures. Work hardening rate and ductility of the eutectic at low temperatures also were affected, leading to the conclusion that ordering changes the compatability of slip across inter-phase boundaries. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 31, 1971
Accession Number
AD0732010

Entities

People

  • N. S. Stoloff
  • Y. G. Kim

Organizations

  • Rensselaer Polytechnic Institute

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Critical Temperature
  • Directional
  • Ductility
  • Glass Transition Temperature
  • Hardening
  • Low Temperature
  • Mechanical Properties
  • Solidification
  • Tensile Properties
  • Transition Temperature

Readers

  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Space