%0 Journal Article
%T THE INFLUENCE OF PULSE ELECTRIC DISCHARGING ON SOLIDIFIED STRUCTURE OF Sn-10% Pb ALLOY<br>脉冲电流对Sn—Pb合金凝固组织的影响
%A YAN Hongchun
%A HE Guanhu
%A ZHOU Benlian
%A QIN Rongshan
%A GUO Jingdong
%A SHEN Yifu
%A <br>鄢红春
%A 何冠虎
%A 周本濂
%A 秦荣山
%A 郭敬东
%A 沈以赴
%J 金属学报
%D 1997
%I 
%X The influence of PED (pulse electric discharging) on the solidified structure of Sn-10%Pb (mass fraction) hypoeutectic has been studied. The testing results show that the PED can modify the solidified structure from large grains with Sn-rich dendrites to finer grains with nearly globular crystals. A phenomenological mechanism has been proposed to approach how the PED affects the microstructure. The relationships between the pulse pressure and pulse current, and between the nucleation rate and pulse pressure have been derived using the classical homogeneous nucleation theory and electrodynamic theory. The different results, tested here and elsewhere, may result from the different influence of PED on nucleation and growth of grains because of the different pulse pressure with various PED.
%K Sn-Pb alloys
%K solidified microstructure
%K pulse electric discharging
%K pulse pressure
%K nucleation rate<br>凝固组织
%K 脉冲电流
%K 成核率
%K 锡铅合金
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=17FA1B7742901161F3BF8DCDE85EF6B8&yid=5370399DC954B911&vid=27746BCEEE58E9DC&iid=E158A972A605785F&sid=EA64BD0B2FF6E786&eid=EF78DD85C21CB57F&journal_id=0412-1961&journal_name=金属学报&referenced_num=90&reference_num=3