Shijie Li , Chuanzhen Huang , Hanlian Liu , Zhenyu Shi , Lianggang Ji , Xinyao Cui , Chongzhen Du , Zhen Wang , Longhua Xu , Shuiquan Huang
{"title":"FEM and experimental research on residual stress, crack propagation and toughening mechanisms of novel bionic ceramic cutting tools","authors":"Shijie Li , Chuanzhen Huang , Hanlian Liu , Zhenyu Shi , Lianggang Ji , Xinyao Cui , Chongzhen Du , Zhen Wang , Longhua Xu , Shuiquan Huang","doi":"10.1016/j.matchar.2025.114875","DOIUrl":null,"url":null,"abstract":"<div><div>To improve the properties of ceramic cutting tools, bionic ceramic cutting tools with innovative interfacial weaves in linear, triangular, square, and wavy shapes were fabricated by bionic design and the bottom-up assembly method. The stress distribution characteristics of the innovative interfacial textures were analyzed by finite element simulation. The effects of stress distribution in the innovative interfacial texture on the crack propagation mechanism were systematically investigated by crack propagation tests and double-sided shear tests, revealing their contribution to fracture resistance. Finally, the effect of residual stress on the properties and interfacial strengthening mechanism of the bionic ceramic cutting tool was evaluated with the microstructure evolution under the modulation of the innovative interfacial texture. The results show that the residual stress can generate a discontinuous stress concentration effect in the peak and valley regions of the innovative interfacial texture. The crack propagation and toughening mechanism can be modulated through stress concentration effects. The interfacial strengthening mechanism indicates that the appropriate and innovative interfacial textures can significantly enhance the mechanical properties and interfacial bonding strength, and further improve the fracture resistance and stability. Furthermore, the formed transition areas can modulate the residual stress distribution and enhance the interfacial bonding strength. The interfacial bonding strengths of linear, triangular, square, and wavy bionic ceramic cutting tools were 63.13 ± 6.4 MPa, 53.25 ± 4.3 MPa, 73.89 ± 8.0 MPa, and 93.26 ± 3.9 MPa, respectively. The wavy bionic ceramic tool exhibits optimal properties in terms of fracture toughness, Vickers hardness, and flexural strength, with values of 7.28 ± 0.27 MPa·m<sup>1/2</sup>, 21.53 ± 0.21 GPa, and 912.81 ± 40 MPa, respectively. This work can provide new ideas and methods to improve the properties of bionic ceramic cutting tools.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"223 ","pages":"Article 114875"},"PeriodicalIF":5.5000,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Characterization","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1044580325001640","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/25 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CHARACTERIZATION & TESTING","Score":null,"Total":0}
引用次数: 0
Abstract
To improve the properties of ceramic cutting tools, bionic ceramic cutting tools with innovative interfacial weaves in linear, triangular, square, and wavy shapes were fabricated by bionic design and the bottom-up assembly method. The stress distribution characteristics of the innovative interfacial textures were analyzed by finite element simulation. The effects of stress distribution in the innovative interfacial texture on the crack propagation mechanism were systematically investigated by crack propagation tests and double-sided shear tests, revealing their contribution to fracture resistance. Finally, the effect of residual stress on the properties and interfacial strengthening mechanism of the bionic ceramic cutting tool was evaluated with the microstructure evolution under the modulation of the innovative interfacial texture. The results show that the residual stress can generate a discontinuous stress concentration effect in the peak and valley regions of the innovative interfacial texture. The crack propagation and toughening mechanism can be modulated through stress concentration effects. The interfacial strengthening mechanism indicates that the appropriate and innovative interfacial textures can significantly enhance the mechanical properties and interfacial bonding strength, and further improve the fracture resistance and stability. Furthermore, the formed transition areas can modulate the residual stress distribution and enhance the interfacial bonding strength. The interfacial bonding strengths of linear, triangular, square, and wavy bionic ceramic cutting tools were 63.13 ± 6.4 MPa, 53.25 ± 4.3 MPa, 73.89 ± 8.0 MPa, and 93.26 ± 3.9 MPa, respectively. The wavy bionic ceramic tool exhibits optimal properties in terms of fracture toughness, Vickers hardness, and flexural strength, with values of 7.28 ± 0.27 MPa·m1/2, 21.53 ± 0.21 GPa, and 912.81 ± 40 MPa, respectively. This work can provide new ideas and methods to improve the properties of bionic ceramic cutting tools.
期刊介绍：
Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials.
The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal.
The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include:
Metals & Alloys
Ceramics
Nanomaterials
Biomedical materials
Optical materials
Composites
Natural Materials.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
