Solidification Pathways in Highly Undercooled Co79.3B20.7 Alloy
Solidification Pathways in Highly Undercooled Co79.3B20.7 Alloy
复制标题
高度过冷 Co79.3B20.7 合金的凝固路径
DOI：
10.1007/s11661-021-06413-3
复制
发表时间：
2021-08-13
影响因子：
2.8
通讯作者：
Li, Jinfu
中科院分区：
文献类型：
--
作者：
Liu, Lianjie;Yang, Lin;Li, Jinfu
过冷 Co79.3B20.7 合金的凝固过程中揭示了多达 5 种凝固路径。随着成核前过冷度的增加，主相从 Co3B 变为 Co2B，再变为 Co23B6，然后变为 α-Co/Co3B 共晶。在Co23B6作为初生相形成的情况下，合金可以完全凝固成Co23B6，或者初生Co23B6相随后重熔并再凝固成α-Co/Co2B共晶。基于成核理论解释了相竞争。
Up to five solidification pathways were revealed in solidification of undercooled Co79.3B20.7 alloy. As the undercooling prior to nucleation increases, the primary phase changes from Co3B to Co2B to Co23B6 and then to α-Co/Co3B eutectic. In the case that Co23B6 forms as primary phase, the alloy may completely solidify into Co23B6 or the primary Co23B6 phase is subsequently remelted and resolidified into α-Co/Co2B eutectic. Based on nucleation theories the phase competition was interpreted.