%0 Journal Article
%T INFLUENCE OF AGING ON SERRATED FLOW OF ALUMINUM ALLOY LC9
%A WU Min XU Yuehuang SHEN Gongtian Wuhan University
%A Wuhan
%A China
%A <br>WU Min XU Yuehuang SHEN Gongtian Wuhan University
%A Wuhan
%A China
%J 金属学报(英文版)
%D 1992
%I 
%X The serratedflow of alloy LC9 with different regimes of heat treatment has been investigatedat constant rate of stretching.The critieal strain ε_c at the starting of serrated flow increaseswith the extension of aging.The activation energy of the process is 0.63 e V which is consistentwith the diffusion activation energy of vacancies in A1.The ε_c decreases while the strain rate εincreases,i.e.,with negative strain rate relation.This relation is contrary to that of the an-nealed samples.It shows that the serrated 17ow of annealed sample is controlled bydeformation vaeancies,and that of aged sample is controlled by quenching vacancies.The den-sity and shape of the serration are changed by aging.The mechanism of the above mentionedresults is discussed.
%K serratedflow
%K Cottrell atmosphere
%K aging
%K pinning and depinning<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=3B44ABDB1A9E4926E17408D556C32521&yid=F53A2717BDB04D52&vid=94C357A881DFC066&iid=0B39A22176CE99FB&sid=74011071555EB4E5&eid=F24949CFDB502409&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=10