SiCp/A356铝基复合材料汽车制动盘铸造模拟及分析  

Simulation and Analysis of SiCp/A356 Aluminum Matrix Composite Automobile Brake Disc

作　　者：胡宝军 陈世龙 印宇 许雪松 圣小刚 严峰 Hu Baojun;Chen Shilong;Yin Yu;Xu Xuesong;Sheng Xiaogang;Yan Feng(Jiangsu Northern Rail Transit Technology Co.,Ltd.;School of Mechanical Engineering,Nantong University)

机构地区：[1]江苏北方轨道交通科技有限公司,江苏南通226400 [2]南通大学机械工程学院

出　　处：《特种铸造及有色合金》2022年第11期1375-1379,共5页Special Casting & Nonferrous Alloys

基　　金：江苏省成果转化基金资助项目(BA2015129);江苏省产学研合作资助项目(BY2016053-17)。

摘　　要：采用搅拌铸造法制备了SiC_(p)/A356复合材料,真空吸铸成形了通风式的新能源汽车制动盘。基于ProCAST数值模拟及缺陷预测,确定理想的浇注工艺参数,铸出品质合格的制动盘。经光学显微镜、电镜、超声探伤分析,发现有颗粒团聚。采用超声施振辅以机械搅拌改进,超声波熔体渗入团簇增强润湿性并促进解聚。提取SiC物相并拟合颗粒正态分布曲线,逐层确认盘体内颗粒弥散分布且无团簇。SiC_(p)/A356 composites were prepared by stirring casting method, and the ventilated new energy vehicle brake disc was produced by vacuum suction casting. Based on ProCAST numerical simulation and defect prediction, optimal casting process parameters were determined to cast the qualified brake discs. Particle aggregation were observed by optical microscope, electron microscope and ultrasonic flaw detection analysis. Ultrasonic vibration assisting with mechanical agitation was used to improve the welability and depolymerization of ultrasonic melt infiltration into clusters. The SiC phase was extracted and the normal distribution curve of particles was fitted to confirm the dispersion distribution of particles without clusters in the disc layer by layer.

关 键 词：铝基复合材料 数值模拟 真空吸铸 颗粒团聚 

分 类 号：TB311[一般工业技术—材料科学与工程] TP311[自动化与计算机技术—计算机软件与理论] TG249.6[自动化与计算机技术—计算机科学与技术]