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粉末冶金材料科学与工程 >

2023 , Vol. 28 >Issue 2: 93 - 112

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

理论研究

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

  • 赵文龙 ,
  • 孙加林 ,
  • 皇志富 ,
  • 赵乐 ,
  • 李晓
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  • 1.西安交通大学 金属材料强度国家重点实验室,西安 710049;
    2.山东大学 (威海)机电与信息工程学院,威海 264209;
    3.威海威硬工具股份有限公司,威海 264210

收稿日期: 2022-08-13

  修回日期: 2022-11-07

  网络出版日期: 2023-05-04

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)

收起

Simulation of crack propagation and mechanical properties prediction of graphene-carbon nanotubes/WC ceramic tool materials

  • ZHAO Wenlong ,
  • SUN Jialin ,
  • HUANG Zhifu ,
  • ZHAO Le ,
  • LI Xiao
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  • 1. State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China;
    2. School of Mechanical, Electrical and Information Engineering, Shandong University (Weihai), Weihai 264209, China;
    3. Weihai Weiying Tool Co., Ltd., Weihai 264210, China

Received date: 2022-08-13

  Revised date: 2022-11-07

  Online published: 2023-05-04

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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。

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

本文引用格式

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

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

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