Microstructure and wear characterization of rice husk ash reinforced copper matrix composites prepared using friction stir processing

被引：57

作者：

Dinaharan, I. ^{[1
]}

Kalaiselvan, K. ^{[2
]}

Akinlabi, E. T. ^{[1
]}

Paulo Davim, J. ^{[3
]}

机构：

[1] Univ Johannesburg, Dept Mech Engn Sci, Auckland Pk Kingsway Campus, ZA-2006 Johannesburg, South Africa

[2] Dr NGP Inst Technol, Dept Mech Engn, Coimbatore 641048, Tamil Nadu, India

[3] Univ Aveiro, Dept Mech Engn, Campus Santiago, P-3810193 Aveiro, Portugal

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 718卷

关键词：

Copper matrix composites; Friction stir processing; Rice husk ash; Wear; MECHANICAL-PROPERTIES; SURFACE COMPOSITES; CU-TIB2; COMPOSITE; FLY-ASH; PREDICTION; ALLOY; FABRICATION; BEHAVIOR; WASTE;

D O I：

10.1016/j.jallcom.2017.05.117

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Rice husk ash (RHA) is an economical reinforcement to improve the poor wear behavior of pure copper. This work concentrates on the preparation of Cu/RHA (0,6,12,18 vol.%) copper matrix composites (CMCs) by friction stir processing (FSP). Grooves were machined on the copper plates to deposit RHA particles and were friction stir processed at a chosen set of process parameters. The microstructure was studied using optical, scanning and transmission electron microscopy. The wear behavior was estimated using a pin-on-disc apparatus. The micrographs revealed a uniform dispersion of RHA particles in the copper matrix. Neither aggregation nor segregation was observed. The variation in the dispersion of RHA particles at different regions within the stir zone was negligible. A good interfacial bonding between RHA particles and the copper matrix was realized. Many RHA particles encountered break up. A remarkable grain refinement was achieved due to dynamic recrystallization and pinning effect of RHA particles. The wear behavior under dry sliding condition was presented in detail. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：150 / 160

页数：11