11 Title (Include Security Classj/ication) THE STRESS AND TEMPERATURE DEPENDENCE OF CREEP IN AN AL-2.0WT%LI ALLOY

De 4rtment of Defense or the U.S. Government. 17 Cosati Codes 1'8 Subject Terms (continue on reverse if necessary and identify by block number) Field Group Subgroup "ctivadon Energy, Creep Behavior, Al-Li Alloy) % ":# ',/1 4 ^ ) (,' Abstract (continue on reverse if necessary n ideitofy boc r.. i,... The effect of stress and temperatuir on the creep behavior of an A2.0wt%Lialloy was investigated in the temperature range from 300 to 50(. This temperature intervafcorrespons to a solid solution of Li in Al. Experimental results indicate that Al-2.Owt%Li behaves as a pure metal class alloy (class I). This is demonstrated by several creep characteristics including the value of the stress exponent (n t; 5), the shape of th