%0 Journal Article
%T Microstructures and Creep Behavior of a Directionally Solidified NiAl-Fe(Nb) Multiphase Intermetallic Alloy
%A Yihui QI
%A Jianting GUO
%A Chuanyong CUI
%A <br>YihuiQI
%A JiantingGUO等
%J 材料科学技术学报
%D 2003
%I 
%X The microstructure and creep behavior of a DS NiAl-Fe(Nb) multiphase intermetallic alloy have been investigated. This alloyexhibits dendritic structure, in which dendritic arm isβ-(Ni,Fe)(Fe,Al) phase surrounded by interdendritic region ofγ'/γ phase.The results of the creep test indicated that all of the creep curves have similar characteristic, which is a short primary creepstage and a dominant steady state creep stage, and the creep strain ranges from 18% to 52%. The apparent stress exponentand the apparent activation energy were analyzed and discussed. The mechanism of the creep deformation was also analyzedby the observation of TEM.
%K NiAl
%K Multiphase intermetallic alloy
%K Microstructure
%K Creep<br>直接凝固
%K NiAl
%K 多相金属间合金
%K 显微结构
%K 蠕变行为
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=299090EC50DF2432&yid=D43C4A19B2EE3C0A&vid=2A8D03AD8076A2E3&iid=CA4FD0336C81A37A&sid=6AC2A205FBB0EF23&eid=95D537AC89B28832&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=23