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层状铝基复合材料制动鼓复合铸造的数值模拟与实验研究

Numerical Simulation and Experimental Study on Compound Casting of Layered Aluminum Matrix Composite Brake Drum.

作者信息

Zheng Hansen, Zhang Zhifeng, Bai Yuelong

机构信息

National Engineering & Technology Research Center for Non-Ferrous Metal Matrix Composites, GRINM Group Co., Ltd., No.11, Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing 101407, China.

GRINM Metal Composites Technology Co., Ltd., No.11, Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing 101407, China.

出版信息

Materials (Basel). 2021 Mar 15;14(6):1412. doi: 10.3390/ma14061412.

DOI:10.3390/ma14061412
PMID:33803948
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8002163/
Abstract

The requirements of high-strength, wear-resistance and lightweight of brake drums have been continually increasing in recent years and any specific aluminum alloy or particle-reinforced aluminum matrix composites may not satisfy all the demands. Combining dissimilar materials to play their respective advantages is a solution to this problem. In this study, a compound casting method was used to combine solid SiC/A357 composite and a liquid 7050 aluminum alloy to prepare an aluminum matrix composite with a layered structure. The ProCAST numerical simulation software was used to predict the heat transfer in compound casting process and guide the preheating temperature of the wear-resistant ring in the experiment. An Optical Microscope (OM) and Scanning Electron Microscope (SEM) were used to observe microstructures around the solid-liquid bonding interface, the element distribution and phase component of which were analyzed by Energy Dispersive Spectroscopy (EDS) and mechanical properties were evaluated by microhardness and shear tests. The results showed that the interface of the layered aluminum matrix composite prepared by this method achieved complete metallurgical bonding and a transition zone formed on the solid surface. After T6 heat treatment, the average shear strength of the interface increased from 19.8 MPa to 33.8 MPa.

摘要

近年来，制动鼓对高强度、耐磨性和轻量化的要求不断提高，任何一种特定的铝合金或颗粒增强铝基复合材料都可能无法满足所有这些需求。将不同材料结合起来发挥各自的优势是解决这一问题的一种方法。在本研究中，采用复合铸造方法将固态SiC/A357复合材料与液态7050铝合金结合，制备出具有层状结构的铝基复合材料。利用ProCAST数值模拟软件预测复合铸造过程中的热传递，并指导实验中耐磨环的预热温度。使用光学显微镜（OM）和扫描电子显微镜（SEM）观察固液结合界面周围的微观结构，通过能谱仪（EDS）分析其元素分布和相组成，并通过显微硬度和剪切试验评估力学性能。结果表明，通过该方法制备的层状铝基复合材料界面实现了完全冶金结合，在固态表面形成了过渡区。经过T6热处理后，界面的平均剪切强度从19.8MPa提高到33.8MPa。

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Tool Wear Prediction Based on Artificial Neural Network during Aluminum Matrix Composite Milling.基于人工神经网络的铝合金复合材料铣削过程中的刀具磨损预测。
Sensors (Basel). 2020 Oct 13;20(20):5798. doi: 10.3390/s20205798.
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Characterization and Analysis of Porosities in High Pressure Die Cast Aluminum by Using Metallography, X-Ray Radiography, and Micro-Computed Tomography.
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Materials (Basel). 2020 Jul 9;13(14):3068. doi: 10.3390/ma13143068.