摘要
采用臂长为1．3m的离心机实现1、5、10、15g（1g=9．8m·s-2）四个重力水平；利用Bridgman法使Ph－Sn共晶单向凝固，以观察重力对凝固组织的影响结果表明，随重力水平的提高，共晶晶团尺寸减小，而共晶相间距不变。
A centrifuge with of radius 1.3m is used to achieve four gravity levels (1g, 5g, 10g and 15g, 1g=9.8m.s-2). For observing and analyzing the difference of solidification morphology in various gravity levels, the eutectic Pb-Sn is directionaIly solidified in high gravity using Bridgman technique.Experimental results show that the size of eutectic cell in high-gravity is smaller than that of 1g, and that the Pb-Sn eutectic interphase spacing at the various gravity levels has little partial difference,which indicate that the buoyancy convection don't influent the exchange of solute between the eutectic phases.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
1998年第4期395-398,共4页
Chinese Journal of Materials Research
关键词
超重力
浮力对流
共晶相间距
铅锡合金
凝固组织
extragravify buoyancy convection, eutectic cell, eutectic interphase spacing
