A Study on the Wear Behavior of Al2Ce-p Reinforced Al Matrix Composite Layers at an Elevated Temperature

Abstract

This study focuses on fabricating Al matrix composite layers on commercially pure Al and 7075 alloy by hot pressing to improve wear resistance at elevated temperatures. As a reinforcement particle, Al2Ce intermetallic particles synthesized by vacuum arc melting was chosen for its better chemical compatibility with Al matrix. Structural characterizations revealed the good binding between Al2Ce-p and Al matrix and the success of Al2Ce-p in increasing hardness of Al and 7075 alloy. Results of the wear tests conducted at 200 degrees C against alumina balls under the load of 2 N showed 2.6- and 6.0-times lower wear rate for the Al matrix composite layer covered and 7075 matrix composite layer covered samples as compared to their monolithic states, respectively.