Characteristics Study of Physical, Mechanical and Tribological Behaviour of SiC/TiB2 Dispersed Aluminium Matrix Composite

被引:32
作者
Bhowmik, Abhijit [1 ]
Dey, Dipankar [1 ]
Biswas, Ajay [1 ]
机构
[1] NIT Agartala, ME Dept, Jirania 799046, India
关键词
Aluminium; SiC; TiB2; Mechanical properties; Microstructure; Wear rate; WEAR BEHAVIOR; ALLOY; MICROSTRUCTURE; PARTICULATE; TENSILE; CARBIDE; AL2O3;
D O I
10.1007/s12633-020-00923-2
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
SiC and TiB2 particle reinforced Al7075 matrix composite has numerous applications such as aircraft structures, mould tool manufacturing, and structural application due to less weight to strength ratio, low wear rate and high creeping behaviour. This paper deals with the various effect of the physical properties, mechanical properties, microstructure evaluation, and wear resistance of SiC, and TiB2 particulates reinforced Al7075 matrix composite fabricated by stir casting. XRD revealed the proper dispersion of SiC and TiB2 reinforcement throughout the aluminium matrix without the formation of an intermetallic compound. Ultimate tensile strength (UTS) and microhardness of aluminium matrix composite developed its strength and hardness from 140 MPa to 198 MPa and 66 HV to 86 HV respectively with the incorporation of SiC and TiB2 reinforcement. As compared to unreinforced aluminium matrix 7075, the ultimate tensile strength of SiC and TiB2 reinforced composite significantly developed due to better bonding and clear interface of reinforced particulates. Microstructure analyses that SiC and TiB2 contents homogeneously dispersed throughout the aluminium matrix. The unlubricated pin on disc tribotest was performed to determine the wear rate of casted aluminium matrix composite. The wear tests were performed at various loads (10, 20, 30 and 40 N), sliding velocity (1.25, 2.5, 3.75 and 5 m/s) and covering distance (1000, 2000, 3000 and 4000 m) which rotates against counter plate EN31 steel disc.
引用
收藏
页码:1133 / 1146
页数:14
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