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- 저자 : Arabinda Meher (검색결과 1 건)
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Arabinda Meher,Manas Mohan Mahapatra,Priyaranjan Samal,Pandu R. Vundavilli 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.9
Abrasive wear behaviour of TiB2reinforced in-situ magnesium RZ5 alloy-based metal matrix composites was investigatedusing a pin-on-disc wear testing apparatus. The in-situ RZ5/TiB2 composite was synthesized through the self-propagatinghigh-temperature synthesis route. The microstructure of the composite revealed a near-uniform distribution of TiB2in magnesiummatrix. The abrasive wear behaviour on the base RZ5 alloy and TiB2reinforced composites were investigated in termsof weight loss and co-efficient of friction. The effect of varying applied load (10–30 N), sliding distance (1000–3000 m),and wt% of TiB2content on abrasive wear properties were analysed. The results indicated a higher wear loss of the materialswith increase in the applied load and sliding distance. Co-efficient of friction decreased with increase in the applied loadbut increased with increase in sliding distance. The morphology of the worn surface under different test conditions wasanalysed in terms of delamination, wear groove, oxide, and wear debris formation using field emission scanning electronmicroscope. Large flaky shape wear debris was noticed when the load applied is 30 N whereas equiaxed wear debris wasnoticed when the applied load is 10 N. Increase in sliding distance increased the contact temperature led to the formation ofthe oxide layer on the contact surface.
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