肖寒,陈磊,张雄超,李乃拥,周荣锋

• 1:昆明理工大学材料科学与工程学院

摘要(Abstract)：

采用"冷轧-部分重熔"技术制备半固态ZCuSn10P1铜合金浆料,利用Gleeble-3500型热/力学模拟试验机对半固态ZCuSn10P1铜合金进行单向压缩试验,研究半固态ZCuSn10P1铜合金压缩变形时液固两相协同变形行为和组织演变规律。结果表明:半固态ZCuSn10P1铜合金单向压缩变形后,近球状固相晶粒会变为纤维状或胞状晶。半固态ZCuSn10P1铜合金在应变速率为1 s~(-1)条件下从350℃到880℃等温压缩后显微组织发生变形,其主要变形机制为:固相粒子的塑性变形机制(PDS)、固相粒子之间的滑移机制(SS)、液固相混合流动机制(FLS)和液相流动机制(LF)。半固态ZCuSn10P1铜合金在压缩过程中,应变速率越大,所承受的变形抗力越大,试样被破坏程度越大,当压缩变形温度较高时,半固态ZCuSn10P1铜合金发生沿晶断裂。

关键词(KeyWords)： ZCuSn10P1铜合金;半固态压缩;组织演变;变形机制;变形行为

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51965028);; 云南省基础研究计划项目(202001AT070031)

作者(Author): 肖寒,陈磊,张雄超,李乃拥,周荣锋

DOI: 10.13289/j.issn.1009-6264.2021-0244

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