%0 Journal Article
%T MORPHOLOGIES OF (Al,Ag)_3Ti AND Ti_3AlC PRECIPITATES IN Ll_0-TiAl INTERMETALLIC COMPOUND<br>TiAl金属间化合物中（Al,Ag）3Ti,Ti3AlC的析出形态
%A TIAN Wenhuai
%A YANG Haichun
%A NEMOTO Minoru
%A <br>田文怀
%A 杨海春
%A 根本■
%J 金属学报
%D 1997
%I 
%X A trasmission electron microscopy (TEM) investigation has been performed on the moerphologies of Ll2-(Al,Ag),Ti and Ti3AIC precipitates in Ll0-ordered TiAl(Ag). During aging at temperatures around 1073 K after quenching from 1473 K, TiAl(Ag) hardens by the precipitation of (Al,Ag)3Ti and Ti3AIC. TEM observations revealed that plate-like precipitates (Al,Ag)3Ti lie on (001) plane of TiAl(Ag) matrix and needle--like pricipitates Ti3AlC, which lie only in one direction parallel to the 001] axis of the TiAl(Ag) matrix, appear after longer period aging or higher temperature aging. The anisotropic misfits between TiAl matrix and Ll2-(Al,Ag)3Ti and Ti3AIC can be considered to explain the morphologies of (Ag,Al)3Ti and Ti3AIC precipitates.
%K intermetallic
%K TiAl
%K precipitation
%K age-hardening<br>金属间化合物
%K 时效硬化
%K 钛铝合金
%K 析出相
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=17FA1B7742901161BFB8BC342352F115&yid=5370399DC954B911&vid=27746BCEEE58E9DC&iid=DF92D298D3FF1E6E&sid=2E4E3741E8FB64E9&eid=6D25DD85174CF6DB&journal_id=0412-1961&journal_name=金属学报&referenced_num=1&reference_num=2