%0 Journal Article
%T CONCENTRATION DISTRIBUTION OF ALLOYING ELEMENTS IN SURFACE LAYER OF Ti ALLOY MELTS
%A KONG Fanya YANG Kenu LU Yong''''an SUN Shuxue Institute of Metal Research
%A Academia Sinica
%A Shenyang
%A China
%A <br>KONG Fanya YANG Kenu LU Yong''''an SUN Shuxue Institute of Metal Research
%A Academia Sinica
%A Shenyang
%A China
%J 金属学报(英文版)
%D 1992
%I 
%X The concentration distribution of alloying elements such as Al,Sn,V,Si and Mo in surfacelayer of quenched Ti alloy melts(TC4,TA 7 and TC9)has been determined by EPMA.Ti al-loy samples were melted and evaporized by electron beam in water cooled copper curcible.Theactivity coefficient of alloy elements in Ti alloy melts are:γ_(Al)=0.009—0.018 and γ_(Sn)=0.066—0.123 at 1921—2106℃;γ_V=0.713 at 2021℃;γ_(Si)=0.020 and γ_(Mo)=0.913 at 1921℃.Therate controlling steps of the evaporation of alloying elements Al,Sn,V,Si and Mo from Ti al-loy melts have been discussed with the data of evaporation activation energies of such alloy el-ements.
%K titanium alloy
%K evaporation
%K activity coefficient
%K Surface concentration<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=01A315BE94E34A1F0C7B8FC06D4F9C53&yid=F53A2717BDB04D52&vid=94C357A881DFC066&iid=5D311CA918CA9A03&sid=E22B6B8FE86DD8F9&eid=3986B25773CB6C30&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=4