Wear Characteristic of Thixoformed Functionally Graded Material

本研究采用Al-Al_3Ni功能梯度材料（fgm）。用离心法制造的fgm在刚好高于共晶熔点的温度下触变形成。在合适的条件下，产品中出现了细化的Al3Ni晶粒，由粗晶粒转变为细晶粒，有望改善合金的力学性能。将小波分析结果应用于磨损测试系统的声发射信号，讨论了FGM的磨损特性。

In this research, Al-Al_3Ni functionally graded materials(FGMs) were used. The FGMs manufactured by the centrifugal method were thixoformed at the temperature just above the eutectic melting point. The product under the suitable condition is found to have refined Al3Ni grains, which change from coarse grains and are expected to improve the mechanical properties. We discussion the wear properties of the FGM by the result of the Wavelet analysis applied to the AE signals measured in our wear testing system.