山东大学学报 (工学版) ›› 2020, Vol. 50 ›› Issue (1): 123-128.doi: 10.6040/j.issn.1672-3961.0.2019.002
• 其他 • 上一篇
Na ZHANG1(),Yanjun YU1,Yuqing WANG1,Degang ZHAO2
摘要:
利用电阻率法研究铜模冷却条件下Al65Bi28Cu7偏晶合金的液-液相分离过程,并分析Al65Bi28Cu7偏晶合金核壳结构的形成机理。研究结果表明,电阻率与温度关系曲线(ρ-T曲线)的异常变化证实了Al65Bi28Cu7偏晶合金熔体的凝固先后经历了液-液相分离、偏晶反应和共晶反应,在偏晶反应温度以上ρ-T曲线出现的非线性变化主要来源于熔体内的浓度起伏。Al65Bi28Cu7偏晶合金能够形成富Bi相包裹富Al相的核壳结构。
中图分类号:
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