Mechanical Characterization and Microstructural Analysis of Hybrid Composites (LM5/ZrO2/Gr)

被引:14
作者
Juliyana, Sunder Jebarose [1 ]
Prakash, Jayavelu Udaya [1 ]
Salunkhe, Sachin [1 ]
Hussein, Hussein Mohamed Abdelmoneam [2 ,3 ]
Gawade, Sharad Ramdas [4 ]
机构
[1] Vel Tech Rangarajan Dr Sagunthala R&D Inst Sci &, Dept Mech Engn, Chennai 600062, Tamil Nadu, India
[2] Future Univ Egypt, Fac Engn & Technol, Mech Engn Dept, New Cairo 11835, Egypt
[3] Helwan Univ, Fac Engn, Mech Engn Dept, Cairo 11732, Egypt
[4] Sharadchandra Pawar Coll Engn & Technol, Someshwar 412306, Baramati, India
关键词
hybrid composites; characterization; zirconia; graphite; SEM; microstructure; ALUMINUM-MATRIX COMPOSITES; WEAR BEHAVIOR; ASH;
D O I
10.3390/cryst12091207
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
Hybrid composites recently developed as highly effective, high-strength structural materials that are increasingly used. Aluminum matrix hybrid composites strengthened with ceramic particulates are commonly used in marine, aerospace, and defense applications because of their exceptional properties. Zirconia-reinforced composites are favored because these composites display high refractory properties, excellent abrasion resistance, and chemical resistance compared to composites of other reinforcements.For applications where lightweight and superior performance is paramount, such as parts for spacecraft, fighter aircraft, and racecars, graphite compositesare the material of choice. In this research work, an effort was made to combine the properties of zirconia and graphite by producing a unique metal matrix composite of LM5 aluminum alloy reinforced with 6% zirconium dioxide (zirconia), using the stir casting process by changing the percentage of the weight of graphite to 2%, 3%, and 4%. The test specimens were prepared and evaluated in compliance with ASTM standards to study micro- and macrohardness, and impact, tensile, and compressive strength. Microstructural studies of composites performed through optical microscopy and SEM expose the unvarying dispersal of particulates of ZrO2/graphite in the aluminum matrix. The hardness, impact, and compressive strength are enhanced due to the addition of reinforcement.
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页数:21
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