%0 Journal Article
%T A HIGH SPEED CINEMATOGRAPHY STUDY OF RAPID SOLIDIFICATION<br>快速凝固过程的高速摄影研究
%A YANG Gencang
%A WEI Bingbo
%A ZHOU Yaohe
%A <br>杨根仓
%A 魏炳波
%A 周尧和
%J 材料研究学报
%D 1990
%I 
%X Ni-32.5%Sn eutectic alloy has been undercooled by up to 302K(0.215T_E)throughdenucleating with a special boron-silicate glass 70% Na_2SiO_3+17.7% Na_2B_4O_7+12.3%B_2O_3.Its rapidsolidification behaviour during recalescence was studied by means of high speed cinematography andrapid infrared pyrometry,It is found that interface heterogeneous nucleation takes place in preferenceto homogeneous nucleation even at an undercooling above the previously accepted critical undercool-ing 0.2T_mfor homogeneous nucleation,and that the transient solidification velocity attains 784mm/s.
%K undercooling
%K rapid solidification
%K crystal nucleation and growth
%K eutectic alloy
%K high speed cinematography<br>深过冷
%K 快速凝固
%K 晶体形核与长大
%K 共晶合金
%K 高速摄影
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=B9C68E154FD6E3D3&yid=8D39DA2CB9F38FD0&vid=E158A972A605785F&iid=38B194292C032A66&sid=CA5852BD1A173B3A&eid=FA89360EB995A8AD&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=0&reference_num=1