%0 Journal Article
%T Research on the solidification characteristic scale and undercooling during directional solidification of single-phase alloy<br>单相合金定向凝固的特征尺度和过冷度研究
%A WANG Linlin
%A LIN Xin
%A HUANG Weidong
%A SU Yunpeng
%A LI Tao
%A <br>王琳琳
%A 林鑫
%A 黄卫东
%A 苏云鹏
%A 李涛
%J 金属学报
%D 2006
%I 
%X A transparent model alloy,succinonitrile(SCN)-1.48%Salol(mass fraction),was directionally solidified at the constant velocity.The primary dendritic/cellular spacing,tip radius and tip temperature have been measured as a function of growth velocity.The critical velocity for planar interface instability was obtained.It is shown that with the increase of growth velocity,the primary spacing decreases to a local minimum value first,and then increases to a local maximum value,finally decreases again.The cell/dendrite transition happens when the primary spacing increases from the local minimum to maximum value.Experimental results were compared to BH-L and self-consistent models.It is found that the tip temperature predicted by BH-L model shows a large difference with the experimental results,but all experimental results agree with the self-consistent model.
%K directional solidification
%K primary spacing
%K tip radius
%K tip temperature<br>定向凝固
%K 一次间距
%K 尖端半径
%K 尖端温度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=3EF506B61FF93009&yid=37904DC365DD7266&vid=ECE8E54D6034F642&iid=F3090AE9B60B7ED1&sid=2E7DE3EE3BC61ED0&eid=0342E221E01D5238&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=26