Accession Number:

ADA218706

Title:

The Lithium Concentration Dependence of Creep in Binary Aluminum-Lithium Alloys

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1989-06-01

Pagination or Media Count:

57.0

Abstract:

An investigation was conducted into the concentration dependence of creep of binary Aluminum-Lithium alloys. Constant true-stress creep and constant extension-rate stress-strain tests were conducted at temperatures ranging from 250 C to 500 C. Optical microscopy demonstrated that subgrains formed during deformation and that the predominant physical processes in the creep of Aluminum-Lithium alloys appears to be dislocation climb, with Lithium providing strengthening by its effect on the modulus or the stacking fault energy. Keywords Aluminum alloys, Grain structures metallurgy, Theses.

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE