Wearability of SiCP Particle Reinforced Aluminum Matrix Composites Creeper Tread

Author:

Du Zhi Ming1,Qin Jin1,Liu Jun1,Chen Gang1,Jia Hai Meng1,Xie Shui Sheng2

Affiliation:

1. Harbin Institute of Technology

2. Beijing General Research Institute for Non-Ferrous Metals

Abstract

Wearability of SiCpreinforced aluminum matrix composites creeper treads was studied. Wear resistance of these creeper treads was tested by sliding friction pin-disk tester at room temperature. Friction morphology was observed and the friction mechanism of these creeper treads was investigated. The experiment parameters such as SiCpparticle size, volume fraction, mixing temperature, mixing time were adjusted and the best parameters were found through the tests. The results showed that the creeper tread had the most excellent wearability, high strength and hardness with 875r/min mixing speed, 40min~60min mixing time, 660°C~700°C mixing temperature, 7μm SiCpparticle size and the 10vol% SiCpvolume fraction. There were no microscopic holes and other defects in these dense composite materials. The interface between SiCpand Al matrix was clean and straight, where Al4C3brittle phase wasn't observed.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

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