%0 Journal Article
%T MICROSTRUCTURE AND MECHANICAL PROPERTIES OF 8090 Al-Li ALLOY
%A LIU Yulin ZHANG Yun ZHAO Hong''''en HU Zhuangqi SHI Changxu Institute of Metal Research
%A Academia Sinica
%A Shentang
%A China
%A <br>LIU Yulin ZHANG Yun ZHAO Hong''''en HU Zhuangqi SHI Changxu Institute of Metal Research
%A Academia Sinica
%A Shentang
%A China
%J 金属学报(英文版)
%D 1992
%I 
%X The change of mechanical properties of the 8090 Al-Li alloy influenced by aging is attributedto the change of δ′-phase particle size and the precipitation of S′-phase.The δ′-phase mayeasily precipitate and rapidly grow,but the S′-phase can only precipitate with a longer stageof incubation.The precipitation of S′-phase would be promoted by cold working prior to ag-ing.The co-precipitation of δ′- and S′-phase could improve the strength and plastieity of thealloy,for which aging at 190℃.for 20—30 h seems to be optimal.In addition,the precipitatefree zone( PFZ)can form at high angle grain boundary and its width is over 200 nm in peakaging condition.But at sub-grain boundary,the formation of PFZ is difficult.
%K Al-Li alloy aging
%K microstructure
%K mechanical properties<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=387BD1E11F54BBBD9086D3B8F37B0DC6&yid=F53A2717BDB04D52&vid=94C357A881DFC066&iid=0B39A22176CE99FB&sid=CFAC5CB624A41AFD&eid=BB0EA31DB1B01173&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=16