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Influence of mechanical alloying on the mechanical and tribological properties of SiC particle reinforced aluminum matrix composites

XIAOYAN DENG1, GUOHENG ZHANG1, CHENGWEN QIANG1,2,* , JINCHENG XU3

Affiliation

  1. Key Laboratory for Electronic Materials of the State Ethnic Affairs Commission of PRC, School of Electrical Engineering, Northwest University for Nationalities, Lanzhou730030, China
  2. Institute of Modern Physics, Chinese Academy of Sciences Sciences, Lanzhou 730000, China
  3. Department of Materials Science and Engineering, Lanzhou University, Lanzhou 730000, PR China

Abstract

AlCuMg alloy and its matrix composites reinforced by silicon carbide (particles have been prepared by powder metallurgy (P/M) method. The effects of mechanical alloying technique and SiC particles on the mechanical properties, wear rate and friction coefficient were studied. The results show that the composites have better mechanical and tribological properties than the matrix alloy. When the volume fraction of SiC particles is 9%, the SiCp/Al 4wt% Cu 4wt Mg composite has the best performances, such as, highest strength, lowest wear rate and lowest coefficient. Mechanical alloying further improves the hardness and tensile strength and shifts its optimal magnesium content of the alloy from 1.2wt% to 0.8wt% However, mechanical alloying hardly influences the wear rate, and slightly affects the friction coefficient of the composite..

Keywords

Metal matrix composites, Mechanical alloying (MA), Powder metallurgy (P/M), Mechanical properties Tribological properties.

Citation

XIAOYAN DENG, GUOHENG ZHANG, CHENGWEN QIANG, JINCHENG XU, Influence of mechanical alloying on the mechanical and tribological properties of SiC particle reinforced aluminum matrix composites, Optoelectronics and Advanced Materials - Rapid Communications, 9, 11-12, November-December 2015, pp.1535-1543 (2015).

Submitted at: Dec. 3, 2013

Accepted at: Oct. 28, 2015