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Investigation on Refinement of Hyper-Eutectic Al-Si AHoy by Melt Mixjng
Author(s): 
Pages: 49-51,55
Year: Issue:  19
Journal: Hot Working Technology

Abstract: 研究了高温Al-30%Si合金熔体和低温Al-7%Si合金熔体混合后浇铸得到的过共晶Al-Si合金显微组织及力学性能.结果表明:不同成分的高低温熔体混合后可有效细化过共晶Al-Si合金的初晶Si尺寸:混合前熔体温差越大,初晶Si细化效果越好;随着混合后静置时间的增加,初晶Si的尺寸变大,Al-Si合金硬度增加.并探讨了其细化机理.
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