采用铜模吸铸法制备Cu50Zr42Al8非晶合金,并对其进行高温快速处理,通过X射线衍射(XRD)观察分析其组织结构.利用球-盘往复式摩擦磨损试验机进行干摩擦磨损试验,研究铸态Cu基大块非晶合金的摩擦磨损行为及高温快速处理对其摩擦磨损性能的影响.结果表明:经高温处理后的试样均有CuZr2,ZrCu和AlCu2 Zr相析出,且析出相体积分数随处理温度的升高而升高.经925℃处理的试样ZrCu相含量减少,而出现了新相Al2Zr3和AlZr3的晶体衍射峰.经825和875℃处理后的试样摩擦性能得到很大提高,当温度继续升高,摩擦性能下降.经825℃处理后的试样摩擦磨损性能最好,磨损面积、磨损率和平均摩擦系数均为最小值1.31×10-4 mm2,0.011×10-4 mm3 ·N-1·m-1和0.11;经925℃处理后的试样摩擦性能最差,其磨损面积和磨损率远远超过其他试样,分别为240.83 × 10-4mm2和2.01×10-4 mm3·N-1·m-1.
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