%0 Journal Article
%T EXISTENCE FORM OF RE ELEMENT Nd AND ITS EFFECT ON THE FORMATION OF Ti_3X PHASE<br>稀土Nd在Ti合金中的存在形态及其对Ti_3X相析出的影响
%A WAN Xiaojing
%A JING Kailiang
%A SHI Wen
%A ZHANG BingLI Dong
%A YANG Rui
%A <br>万晓景
%A 经开良
%A 史文
%A 张丙
%A 李东
%A 杨锐
%J 材料研究学报
%D 1992
%I 
%X The existance form of RE element Nd and its effect on the precipitation ofTi_3X phase in Ti-Al-Nd alloy were investigated by TEM and X-ray diffraction techniques.The results show that the existance form of RE element Nd in Ti alloy is mainlyNd_2O_3 particles,which is the product of internal oxidation during melting and casting.The re-sults also show that the size of Nd_2O_3 particles is about 100-200nm and its structure is bcc.Thestrengthening role of Nd in titanium alloy is the combined interaction of Nd_2O_3 particles withdislocations.The depression effect of Nd on the Ti_3X phase formation is attributed to its low-ering the oxgyen concentration by internal oxidation and then lowing the average electron con-centration.
%K Rare-earth element
%K Ti_3X phase
%K particles strengthening<br>稀土Nd
%K Ti_3X相
%K 质点强化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=69870679F6A0F749&yid=F53A2717BDB04D52&vid=B31275AF3241DB2D&iid=CA4FD0336C81A37A&sid=B31275AF3241DB2D&eid=708DD6B15D2464E8&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=0&reference_num=1