%0 Journal Article
%T Research on Grain Refinement Mechanism in Undercooled Fe75Ni25 Alloy<br>过冷Fe75Ni25合金晶粒细化机制的研究
%A CHEN Yuzeng
%A YANG Gencang
%A LI Feng
%A LIU Ning
%A XIE Hui
%A ZHOU Yaohe
%A <br>陈豫增
%A 杨根仓
%A 刘 峰
%A 刘 宁
%A 谢 辉
%A 周尧和
%J 金属学报
%D 2006
%I 
%X The grain refinement mechanisms of undercooled Fe75Ni25 alloys were investigated by fluxing and cyclic superheating. Within the undercooling, T, range achieved, two kinds of grain refinement were observed. In combination with the calculation and the analysis of experiment results, the grain refinement mechanisms were elucidated. The results indicate that the first grain refinement, occurring if T>56K, can be ascribed to the breakup of dendrite-skeleton owing to remelting, whereas the second grain refinement was caused by recrystallization induced by the stress originating from the rapid solidification contraction with T>209K.
%K Fe-Ni alloy
%K microstructure
%K undercooling
%K grain refinement
%K rapid solidification<br>Fe-Ni合金
%K 微观组织
%K 深过冷
%K 晶粒细化
%K 快速凝固
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=FE72D8A3ED1D66DA&yid=37904DC365DD7266&vid=ECE8E54D6034F642&iid=DF92D298D3FF1E6E&sid=7D2B339649A57040&eid=E008F9AD6D4B96EF&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=25