%0 Journal Article
%T Applied Strain Field on Microstructure Optimization of Ti-Al-Nb Alloy Computer Simulated by Phase Field Approach
%A Wei GUO
%A Yaping ZONG
%A Gang WANG
%A Liang ZUO
%A <br>Wei GUO
%A Yaping ZONG
%A Gang WANG
%A Liang ZUO
%J 材料科学技术学报
%D 2004
%I 
%X The effects of applied tensile strain on the coherent α2→O-phase transformation in Ti-Al-Nb alloys are explored by computer simulation using a phase-field method. The focus is on the influence of the applied strain direction on the microstructure and volume fraction of the O-phase precipitates. It is found that altering applied strain direction can modify microstructure of Ti-25Al-10～12Nb (at. Pct) alloy during α2→O-phase transformation effectively and full laminate microstructure in the Ti-25Al-10Nb (at. Pct) alloy can be realized by an applied strain only along the direction 30° away from the α2 phase <1010> in magnitude equivalent to the stress-free transformation strain. The simulation also shows that not only the magnitude of applied strain but also the applied strain direction influences the O-phase volume fraction and the effect of strain direction on the volume fraction is up to 25%.
%K Phase field simulation
%K Strain induced phase transformation
%K Ti-Al-Nb alloy
%K Computerization materials
%K Microstructure evolution
%K Precipitates geometry
%K Microstructure design<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=F8D1286143A3529221E29BA0083C90E4&yid=D0E58B75BFD8E51C&vid=A04140E723CB732E&iid=38B194292C032A66&sid=E2E0FBFE4D7EFB94&eid=FBA00558C57D9C11&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=10