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制备双金属复合材料的半固态成型法的研究

A study of manufacturing bi-material composite parts though semisolid metal processing
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摘要 以半固态合金Sn-15%Pb和Pb-30%Sn为研究对象,探索应变诱发熔体激活(SIMA)触变锻造制备双金属复合材料的可行性。实验结果表明,半固态金属液体以层流方式流动;复合材料中的球状初晶仍维持各自成分性质和形貌特征;两种半固态合金的液相混合物限制在复合界面下的薄层中;原料的氧化皮在成形过程中撕裂,界面处没有氧化物富集层。 This work evaluated the method of manufacturing bi-material composite parts by semisolid metal processing(SSP) through strain-induced melt-activated(SIMA) thixo-forging.Sn-15 pct Pb and Pb-30 pct Sn semisolid alloys were chosen as model alloys.The results showed that the composite semisolid fluid flowed in a laminar way.Globular primary grains in the two semisolid alloys maintained their respective geometry and constitutions.The mixture of two liquid phases was limited in a thin layer beneath the interface between the two semisolid alloys.The absence of an oxide-enriched layer at the interface suggests that the oxide skins of the feedstock were torn during the processing,leading to the formation of metallurgical bonding at the composite interface.
出处 《轻金属》 CSCD 北大核心 2011年第7期76-80,共5页 Light Metals
关键词 半固态成型 双金属复合材料 应变诱发熔体激活法 触变锻造 semisolid metal processing bi-material composite strain-induced melt-activated method thixo-forging
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