Microstructure evolution of rare earth Pr modified alumina-silicate short fiber-reinforced Al-Si metal matrix composites

查看全文 作　　者：Peng [1]Jihua;Li [1]Wenfang;Huang [1]Fangliang;Tian [1]Jun;Liu [1]Gang;Du [1]Jun

机构地区：[1]S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China

出　　处：《Rare Metals》索引2009年第28卷第2期,共5页

摘　　要：Al-Si metal matrix composites (MMCs) reinforced with 20 vol.% alumina-silicate shot fibers (Al2O3-SiO2(sf)) were fabricated by an infiltration squeeze method. Pure Pr metal was added into these composites. The effect of Pr addition on the microstructure evolution of Al-Si MMCs was investigated by SEM,TEM,and EDS. Pr addition is favorable to make uniform microstructures with the modified eutectic Si crystal. PrAlSi phase with high contents of Pr and Si is observed on the interface between the fiber and the matrix. The addition of Pr promotes interface SiO2 reduction,and SiO2 comes from the crystallization of Al2O3-SiO2 short fibers. 关键词：metal matrix composite microstructure evolution MICROSCOPE Al-Si alloys rare earth

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Microstructure evolution of rare earth Pr modified alumina-silicate short fiber-reinforced Al-Si metal matrix composites

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