Rapid solidification of bulk undercooled hypoperitectic Fe-Cu alloy
Rapid solidification of bulk undercooled hypoperitectic Fe-Cu alloy
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块体过冷亚包晶Fe-Cu合金的快速凝固
DOI：
10.1016/j.jallcom.2006.03.012
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发表时间：
2007-01-16
影响因子：
6.2
通讯作者：
Zhou, Y. H.
中科院分区：
文献类型：
--
作者：
Chen, Y. Z.;Liu, F.;Zhou, Y. H.
采用循环过热和差示扫描量热法（DSC）研究了过冷Cu 70 Fe 30合金的凝固行为。当熔体初始过冷度（Δ T）大于56 K时，出现亚稳相分离。分相熔体中富Fe相的初次凝固是由于其高的形核驱动力，即高的Δ T。富Fe液滴的粗化受AT控制，并可归因于熔体中的奥斯特瓦尔德熟化和凝固效应。(c)2006 Elsevier B.V.保留所有权利。
Adopting cyclic superheating and DSC analysis, solidification behavior of undercooled CU70Fe30 alloy was investigated. The metastable phase separation is observed if the initial melt undercooling (Delta T) is above 56 K. The primary solidification of Fe-rich phase in the phase-separated melt is due to its high nucleation driving force i.e. a high Delta T. The coarsening of Fe-rich droplets is controlled by AT and can be ascribed to the Ostwald ripening and coagulation effect in the melt. (c) 2006 Elsevier B.V. All rights reserved.