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以特制的复合熔盐作为净化剂在氩气氛保护及循环过热条件下去除DD3单晶高温合金熔体中的异质晶核 ,获得了最大 2 1 0K过冷度。详细探讨了复合熔盐净化机制 ,同时对比分析了纯循环过热和熔融玻璃净化方式对于DD3单晶高温合金获得深过冷的可行性
With the special composite molten salt as a purifying agent, the heterogeneous crystal nucleus in the DD3 single crystal superalloy melt is removed under argon atmosphere overheating condition, and the maximum undercooling degree is obtained. The purification mechanism of composite molten salt was discussed in detail. Meanwhile, the feasibility of deep overcooling of DD3 single crystal superalloy