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논문 기본 정보

자료유형
학술저널
저자정보
Mehmet Ayvaz (Manisa Celal Bayar University)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.28 No.3
발행연도
2022.3
수록면
710 - 721 (12page)
DOI
10.1007/s12540-020-00894-4

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In the future, hybrid aluminum matrix composites, which are the second generation composites, will be replaced by solidreinforced third-generation quaternary hybrid composites in which nano- and micro-scale reinforcement particles are usedtogether. In this study, microwave sinterability of B4C,TiO2(nm + μm), and nGr reinforced quaternary hybrid compositesthat had AlCu4.5SiMg alloyed Matrix, and their microstructural and tribological properties after sintering were examined. The proportion of nGr in the composite sample was taken as 0.5 wt%, while B4Cand TiO2were used in three different proportions(3, 9, 12 wt%). After being compressed under 600 MPa pressure, the composite samples were sintered for 60 minat 550 °C by a microwave oven with a power of 2.9 kW and a frequency of 2.45 GHz. It was determined that due to its highmicrowave absorbency, B4Creinforcement improved the microwave sinterability more compared to TiO2. In XRD analyses,whereas Al4C3and Al3BCreaction products were not seen as harmful, the intermetallic phase of Al2Cuwas detected. Itwas determined that both friction coefficient and wear resistance increased as the proportion of B4Cincreased in compositesamples. In AlCu4.5SiMg?(12 wt% B4C/3 wt% TiO2/0.5 wt% nGr) quaternary hybrid composites with the highest hardness(97.6 HV), the lowest specific wear rate (0.118 mm3 Nm × 10?3) was detected.

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