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논문 기본 정보

자료유형
학술저널
저자정보
Guangming Zheng (Beijing Jiaotong University) Zhenying Huang (Beijing Jiaotong University) Qun Yu (Beijing Jiaotong University) Wenqiang Hu (Beijing Jiaotong University) Xingyang Qiu (Beijing Jiaotong University) A. Lixia (Beijing Jiaotong University) Yuanbo Wang (Beijing Jiaotong University) Yidan Jiao (Beijing Jiaotong University) Yang Zhou (Beijing Jiaotong University) Hongxiang Zhai (Beijing Jiaotong University)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.26 No.6
발행연도
2020.1
수록면
905 - 913 (9page)

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In this paper, a novel type of functionally graded material (FGM) was successfully fabricated from pure Ni and Ti3AlC2powder mixtures by hot-press sintering route at 1200 °C and 17 MPa. In each layer, Ti3AlC2particles transformed into TiCxphase, while the additional Al–Ti atoms decomposed from Ti3AlC2diffused into the Ni matrix, giving rise to the formationof γ′-Ni3(Al,Ti). Part of the submicron TiCxand Ni3(Al,Ti) particles were uniformly distributed in the Ni matrix, whilesome of the TiCxmaintained the original Ti3AlC2plate-like morphology. Both TiCxand Ni3(Al,Ti) content decreased from60Ti3AlC2/Ni layer to 10Ti3AlC2/Ni layer in a stepwise manner was fabricated. The microstructural analysis indicatesthat no cracks, delamination and step-type abrupt changes occured in the graded layer of the manufactured FGM. Flexuralstrength and Vickers hardness enhanced with the increasing Ti3AlC2content except for fracture strain and toughness. Theoverall fracture toughness and the flexural strength of FGM can reach 21.76 MPa m1/2 and 1329 ± 34 MPa, respectively. Theprepared FGM, herein, with a hard ceramic surface on one side to resist local plastic deformation, and a ductile metallicsurface on the other side to provide toughness.

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