Simulation and Analysis of SiC<sub>p</sub>/A356 Aluminum Matrix Composite Automobile Brake Disc

Hu Baojun; Chen Shilong; Yin Yu; Xu Xuesong; Sheng Xiaogang; Yan Feng

doi:10.15980/j.tzzz.2022.11.012

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Simulation and Analysis of SiC_p/A356 Aluminum Matrix Composite Automobile Brake Disc
Vol. 42, Issue 11, Pages: 1375-1379(2022)
Published： 2022 ，
DOI： 10.15980/j.tzzz.2022.11.012

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Hu Baojun, Chen Shilong, Yin Yu, et al. Simulation and Analysis of SiC_p/A356 Aluminum Matrix Composite Automobile Brake Disc. [J]. Special Casting & Nonferrous Alloys 42(11):1375-1379(2022)
DOI：

Hu Baojun, Chen Shilong, Yin Yu, et al. Simulation and Analysis of SiC_p/A356 Aluminum Matrix Composite Automobile Brake Disc. [J]. Special Casting & Nonferrous Alloys 42(11):1375-1379(2022) DOI： 10.15980/j.tzzz.2022.11.012.

摘要

采用搅拌铸造法制备了SiC

/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。

Abstract

SiC

/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.