采用喷射轧制工艺制备了钢/Al-8.5Pb-4Si-Cu-0.5Sn复合轴瓦带材,分析了所制备材料的组织及性能。结果表明,喷射轧制工艺制备的轴瓦合金Al-Si基体中具有均匀细小的Pb相粒子分布,经过50%变形量的轧制及320℃,5小时的后续退火处理,复合轴瓦带材的界面处发生了合金元素的扩散,形成了良好的冶金结合层,界面强度高,剪切强度可以达到72MPa,制备的轴瓦合金耐磨性能良好。
The spray forming and rolling process was used for the preparation of steel/Al-8.5Pb-4Si-Cu-0.5Sn (wt%) composite bearing strip. The microstructure and the mechanical properties of the spray formed steel / Al-Pb composite strip were analyzed. It shows that the microstructure of the spray formed Al-Pb layer consists of the Al-Si matrix and the homogeneously distributed refined Pb particles. After a rolling of 50% reduction and followed by annealing at 320℃ for 5 hours, the interfacial shearing strength between the spray formed Al-Pb layer and the steel strip is 72MPa. The high interfacial bonding strength is due to the formation of diffusion layer between the steel substrate and the spray formed Al-Pb alloy layer. The refined Pb particles improve the wear-resistant property of the bearing alloy.
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