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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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Ag-Cu共晶合金在落管中的快速凝固
, PP. 824-830
Keywords: 落管,微重力,快速凝固,Ag—Cu合金
Abstract:
采用3m小型落管实现了Ag—28．1（质量分数，％下同）Cu共晶合金的微重力快速凝固，在高纯He和Ar的混合气氛中获得的合金小球直径在80—1000mm范围内．随着小球直径的减小，晶粒及层片共晶得到细化，凝固组织由层片共晶向不规则共品转变．TMK快速共晶生长理论的计算结果显示，Ag—28．1Cu层片共晶的最大生长速度、最小层片间距和最大过冷度分别为0．291m／s，0．017μm和193K．
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