%0 Journal Article
%T MICROSTRUCTURE AND RHEOLOGICAL BEHAVIOR OF SEMI-SOLID STATE AZ91D ALLOY IN CONTINUOUSLY COOLING PROCESS<br>连续冷却条件下半固态AZ91D镁合金组织及流变特性
%A ZHEN Zisheng
%A MAO Weimin
%A YAN Shijian
%A CUI Chenglin
%A ZHAO Aimin
%A ZHONG Xueyou
%A <br>甄子胜
%A 毛卫民
%A 闫时建
%A 崔成林
%A 赵爱民
%A 钟雪友
%J 金属学报
%D 2003
%I 
%X The microstructure and rheological behavior of the semi-solid state AZ91D slurry in continuously cooling and stirring process were studied by using a Couette type viscometer. The results show that the apparent viscosity of the semi-solid AZ91D magnesium alloy slowly increases originally and then sharply with increasing the solid fraction. It also has a sharp dependence on the cooling rate and the shearing rate operated on the slurry. Decreasing the cooling rate or increasing the shearing rate will lower the apparent viscosity. The analysis of the microstructure of the semi-solid state AZ91D alloy shows that this results from the solid phase shape becoming more globular due to stirring more sufficiently under lower cooling rate, or due to the larger stirring strength under higher shearing rate.
%K magnesium alloy
%K rheological behavior
%K semi-solid
%K apparent viscosity<br>连续冷却
%K 组织
%K 镁合金
%K 流变性能
%K 半固态
%K 表观粘度
%K 汽车
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=64D5237CDA572EEF&yid=D43C4A19B2EE3C0A&vid=7C3A4C1EE6A45749&iid=CA4FD0336C81A37A&sid=4F2F18DD6F870C2C&eid=67969BA850333433&journal_id=0412-1961&journal_name=金属学报&referenced_num=11&reference_num=6