Wear Characteristic of Thixoformed Functionally Graded Material

本研究采用Al-Al_3 Ni功能梯度材料。通过离心法制造的功能梯度材料在略高于共晶熔点的温度下触变成形。在适当的工艺条件下，可以得到细化的Al 3 Ni晶粒，使其由粗大晶粒转变为细小晶粒，有望提高力学性能。通过对磨损试验系统中测得的声发射信号进行小波分析，讨论了功能梯度材料的磨损特性。

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.