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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摘要计算机模拟技术的迅猛发展,为陶瓷刀具材料的性能预报和高通量制备提供了理论和技术支持。本文基于Python软件构建含有石墨烯(graphene, 缩写为G)和碳纳米管(carbon nanotube, CNT)的WC陶瓷刀具材料微观结构的参数化模型与力学性能预报模型,研究G-CNT对WC刀具材料微观组织与裂纹扩展行为的影响规律。结果表明：与单一G相比,三维G-CNT空间结构可进一步提升WC陶瓷刀具材料的性能,G-CNT的质量分数为0.4%时,刀具材料的综合力学性能最优。强韧化机理主要包括G-CNT强弱界面超混杂分布、材料断裂模式转变和裂纹偏转等。

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	赵文龙
	孙加林
	皇志富
	赵乐
	李晓

关键词 ： WC陶瓷刀具, 石墨烯-碳纳米管, 微尺度模拟, 裂纹扩展, 力学性能预报

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

收稿日期: 2022-08-13 出版日期: 2023-05-04

ZTFLH:

TG135

基金资助:国家自然科学基金资助项目(52005396); 陕西省科协青年人才托举计划资助项目(20210414); 山东大学齐鲁青年学者项目(1050522300003)

通讯作者: 孙加林,教授,博士。电话：15686217698;E-mail: sunjialin@sdu.edu.cn

引用本文:

赵文龙, 孙加林, 皇志富, 赵乐, 李晓. 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[J]. 粉末冶金材料科学与工程, 2023, 28(2): 93-112.
ZHAO Wenlong, SUN Jialin, HUANG Zhifu, ZHAO Le, LI Xiao. Simulation of crack propagation and mechanical properties prediction of graphene-carbon nanotubes/WC ceramic tool materials. Materials Science and Engineering of Powder Metallurgy, 2023, 28(2): 93-112.

链接本文:

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

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