石墨烯-碳纳米管/WC陶瓷刀具材料的裂纹扩展与力学性能预报模拟

doi:10.19976/j.cnki.43-1448/TF.2022069

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Abstract The rapid development of computer simulation technology provides theoretical and technical support for the performance prediction and high-throughput preparation of ceramic tool materials. In this paper, a parametric model and mechanical property prediction model of WC ceramic tool materials containing graphene (G) and carbon nanotube (CNT) were constructed based on Python software. The influence of G-CNT on the microstructure and crack propagation behavior of tool materials was mainly studied. The results show that the three-dimensional G-CNT spatial structure can further improve the properties of WC ceramics compared with single G. When the mass fraction of G-CNT is 0.4%, the tool material has the best comprehensive mechanical properties. The strengthening and toughening mechanism mainly include the super-mixed distribution of G-CNT strong and weak interfaces, material fracture mode transformation, crack deflection, etc.

Key words： WC ceramic tools graphene-carbon nanotubes microscale simulation crack propagation mechanical property prediction

Received: 13 August 2022 Published: 04 May 2023

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	ZHAO Wenlong
	SUN Jialin
	HUANG Zhifu
	ZHAO Le
	LI Xiao

Cite this article:

ZHAO Wenlong,SUN Jialin,HUANG Zhifu, et al. Simulation of crack propagation and mechanical properties prediction of graphene-carbon nanotubes/WC ceramic tool materials[J]. Materials Science and Engineering of Powder Metallurgy, 2023, 28(2): 93-112.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2022069 OR http://pmbjb.csu.edu.cn/EN/Y2023/V28/I2/93

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