Wear behavior of Zn–38Al–3.5Cu–1.2Mg/SiCp composite under different stabilization treatments

• 作者: Sheng Liu Qing Yuan Yutong Sima Chenxi Liu Fang Han Wenwei Qiao
• 来源期刊: 矿物冶金与材料学报
• 年，卷（期）: 2022,（6）
• 页码范围: 1270-1279
• 页数: 10页
• 语种: 英文

摘要

A Zn–38Al–3.5Cu–1.2Mg composite reinforced with nano-SiCp was fabricated via stirring-assisted ultrasonic vibration. To im-prove the abrasive resistance of the Zn–38Al–3.5Cu–1.2Mg/SiCp composite, several stabilization treatments with distinct solid solutions and aging temperatures were designed. The results indicated that the optimal stabilization treatment for the Zn–38Al–3.5Cu–1.2Mg/SiCp compos-ite comprised solution treatment at 380℃ for 6 h and aging at 170℃ for 48 h. The stabilization treatment led to the formation of dispersive and homogeneous nano-SiCp. During the friction wear condition, the nano-SiCp limited the microstructure evolution from the hard α(Al,Zn) phase to the soft β(Al,Zn) phase. Moreover, the increased amount of nano-SiCp improved the grain dimension and contributed to the composite ab-rasive resistance. Furthermore, the stabilization treatment suppressed the crack initiation and propagation in the friction wear process, thereby improving the abrasive resistance of the Zn–38Al–3.5Cu–1.2Mg/SiCp composite.