Effects of T4 and T6 Heat Treatments on the Wear Behaviour of WC-Reinforced Mg Alloy Matrix Composite

被引：3
|
作者：
Karuppusamy, P. [1 ]
Lingadurai, K. [2 ]
Sivananth, V [3 ]
机构：
[1] Dr Mahalingam Coll Engn & Technol, Automobile Engn Dept, Pollachi, India
[2] Anna Univ, Coll Engn, Mech Engn Dept, Dindigul, India
[3] Ibri Coll Technol, Engn Dept, Mech Ind Sect, Ibri, Oman
来源：
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2020年 / 73卷 / 03期
关键词：
Magnesium; Semi-solid stir casting; WC; Heat treatment; Wear resistance; MAGNESIUM ALLOY; CAST;
D O I：
10.1007/s12666-020-01860-9
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Collective outcomes of WC particle reinforcement and heat treatment on the dry sliding wear rate of AZ91 magnesium metal matrix composite have been presented. The vacuum-assisted semi-solid stir casting method was employed to fabricate the composites. Wear study was conducted on the specimens using a pin-on-disc tribometer with EN8 steel as a counter material. The experiments were designed using Taguchi L27 array, with control factors viz. applied load (20, 40 and 60 N), sliding speed (1, 2 and 3 m/s), heat treatment (no treatment, T4 and T6) and WC wt% (0, 1.5 and 3). Energy-dispersive X-ray spectroscopy and scanning electron microscopy analyses were performed to study the surface of the tested specimens. T6-treated AZ91/3.0WC composite showed 63% enhanced resistance to wear due to the presence of beta-phase (Mg17Al12) precipitation during the heat treatment process and WC reinforcements.
引用
收藏
页码：521 / 530
页数：10
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