布里奇曼定向凝固Ni-12%Si过共晶的弹性模量与断裂韧性

doi:10.11896/cldb.17120221

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Abstract In this study, the elastic modulus of the Ni₃Si intermetallic compound was calculated by the first principles, and the volume fractions of α-Ni phase in the Bridgman directionally solidified Ni-12%Si (mass fraction) hypereutectic at different solidification rates were analyzed by the Ipp 6.0 image analysis software. The plasticities of the Ni-12%Si hypereutectic at different solidification rates were predicted according to the mixing rule of composite materials. Moreover, the fracture toughnesses of the Ni-12%Si hypereutectic at different solidification rates were studied by three-point bending method , and the fracture morphology and the fracture mechanism were studied as well.

Key words： directional solidification first principle hypereutectic alloy fracture toughness three-point bending

Published: 28 April 2019

CLC number:

TG244+.3

Fund:This work was financially supported by the National Natural Science Foundation of China (51201121), the Fund of National Defense Key Discipline Laboratory of Light Alloy Processing Science and Technology in Nanchang Hangkong University (gf201601001), Science and Technology Foundation for Selected Overseas Chinese Scholars of Shaanxi Province (2015), and Research Project of Shaanxi Engineering Technology Research Center for Wear-resisting Materials (2016NMZX03).

About author:: Baiping Lu, received his Ph.D. degree in materials processing engineering from Northwestern Polytechnical University in 2004. He is currently a professor and master supervisor of Nanchang Hangkong University.; Chunjuan Cui, obtained her M.E. degree and Ph.D. degree in Materials Processing Engineering from Northwestern Polytechnical University and served in school of Metallurgical Engineering, Xi'an University of Architecture and Technology now.

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	LU Baiping
	CUI Chunjuan
	TIAN Lulu
	WEN Yagang
	WANG Pei

Cite this article:

LU Baiping,CUI Chunjuan,TIAN Lulu, et al. Elastic Modulus and Fracture Toughness of Bridgman Directionally Solidified Ni-12%Si Hypereutectic[J]. Materials Reports, 2019, 33(8): 1383-1388.

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http://www.mater-rep.com/EN/10.11896/cldb.17120221 OR http://www.mater-rep.com/EN/Y2019/V33/I8/1383

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