复合铸造与振动斜板冷却铸造SiC_p增强A356复合材料显微组织与耐磨性的比较（英文）

发布时间：2018-04-19 02:09

本文选题：碳化硅增强A铝基复合材料 + 复合铸造　；参考：《Transactions of Nonferrous Metals Society of China》2015年08期

【摘要】：利用复合铸造和振动斜板铸造2种方法铸造Si Cp增强A356复合材料,比较2种复合材料中碳化硅含量对材料显微组织、孔隙、硬度和耐磨性的影响。在铸态条件下,振动斜板铸造和复合铸造的2种复合材料的基体分别为球形和枝晶结构。振动斜板铸造的复合材料其碳化硅颗粒分布更加均匀,并且具有更高的硬度,复合铸造的材料则具有更少的孔隙。对于这2种复合材料,碳化硅颗粒的增加(体积分数最大为20%)导致碳化硅颗粒在基体合金内更加均匀分布并且提高了其耐磨性。与复合铸造材料相比,对于振动斜板铸造的复合材料,碳化硅含量的增加,将降低球形颗粒的尺寸和形状因子,并且具有较好的耐磨性。振动斜板铸造材料比复合铸造材料具有更好的力学性能,这是因为基体中的碳化硅颗粒分布更加均匀,而且振动斜板铸造过程中形成了球形组织。
[Abstract]:Sic p reinforced A356 composites were cast by means of composite casting and vibrating inclined plate casting. The effects of sic content on microstructure, porosity, hardness and wear resistance of the composites were compared.In the as-cast condition, the matrix of the two kinds of composites were spherical and dendritic respectively.The silicon carbide particles are distributed more evenly and have higher hardness, while the composite casting materials have less porosity.For these two composites, the increase of sic particles (up to 20 in volume fraction) leads to a more uniform distribution of sic particles in the matrix alloy and improves its wear resistance.Compared with composite casting materials, the increase of silicon carbide content in vibratory inclined plate casting composites will reduce the size and shape factor of spherical particles, and have better wear resistance.The mechanical properties of vibratory inclined plate casting material are better than that of composite casting material because the silicon carbide particles in the matrix are more uniform and the spherical structure is formed in the process of vibrating inclined plate casting.
【作者单位】： School
【分类号】：TB33;TG24

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