Accession Number : AD0732010

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

Descriptive Note : Technical rept.,

Corporate Author : RENSSELAER POLYTECHNIC INST TROY N Y MATERIALS DIV

Personal Author(s) : Kim,Y. G. ; Stoloff,N. S.

Report Date : 31 OCT 1971

Pagination or Media Count : 26

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)

Descriptors :   (*SILVER ALLOYS, EUTECTICS), (*MAGNESIUM ALLOYS, EUTECTICS), (*EUTECTICS, GRAIN STRUCTURES(METALLURGY)), ALIGNMENT, INTERMETALLIC COMPOUNDS, FREEZING, TENSILE PROPERTIES, DUCTILITY

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE