摘要
在半连续真空定向凝固设备上进行了Ａｌ－０．６ｗｔ％Ｃｕ和Ａｌ－２．０ｗｔ％Ｃｕ两种铝合金的热裂试验，结果表明，两种成分铝合金试样的热裂程度随抽拉速率的提高而增大．理论分析认为，抽拉速率的提高，增加了合金凝固后期的收缩速率，因而造成热裂程度的增加．
Hot cracking experiments was carried out for Al-0.6wt% Cu and Al-2.0wt% Cu alloys in directional solidification device.The results show that the hot cracking tendency increases with increasing drawing rate,and this was considered through theoretical analysis that the reson is the increasing in contraction rate in the later solidfication stage.
出处
《材料科学与工艺》
CAS
CSCD
北大核心
1996年第2期75-80,共6页
Materials Science and Technology
基金
航空基金
关键词
定向
凝固
抽拉速率
热裂
铝合金
directional solidification
drawing rate
hot cracking
