Modelling of the damage initiation at WC/WC and WC/Co boundaries in WC-Co tool material at the microstructure scale: Application to the tool/ chip contact

被引:0
作者
Agode, K. E. [1 ]
Wolff, C. [1 ]
Guven, M. [1 ]
Nouari, M. [1 ]
机构
[1] Univ Lorraine, CNRS, UMR 7239, GIP InSIC,Lab Etud Microstruct & Mecan Mat,LEM3, F-88100 St Die, France
关键词
Damage; WC-co; Microstructure model; Temperature dependent behaviour; Finite element analysis; Traction-separation cohesive law; Cohesive interfaces; FATIGUE-CRACK PROPAGATION; FINITE-ELEMENT; FRACTURE; GROWTH; SIMULATION; PREDICTION; HARDMETAL; WEAR; DEFORMATION; MECHANICS;
D O I
10.1016/j.ijrmhm.2023.106508
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In machining process, the wear of tungsten-cobalt carbide cutting tools (WC-Co) is the result of different wear mechanisms such as abrasion, adhesion and diffusion. At the microstructure scale, the presence of microcracks in the carbide grain boundaries can be observed of the tool and in the WC/Co interfaces on the cutting surface. These microcracks are the cause of the WC-Co pull-out clusters from the cutting tool face. In this work, simu-lations were set up to evaluate the number of WC/WC and WC/Co interfaces that are likely to be damaged first. The behaviour of each phase was modelled by thermo-elasto-plastic behaviour and cohesive interfaces of zero thickness were used to simulate the behaviour of WC/WC and WC/Co interfaces. Different quasi-realistic mi-crostructures were generated by an algorithm to evaluate the dispersion of the results. These microstructures are surrounded on three sides by an assumed homogeneous WC-Co embedding. The microstructure and the embedding form a part of the cutting tool with one side rubbing against a rigid chip to locally reproduce the chip/tool contact. The results of this study show the influence of the cobalt content, temperature, friction co-efficient and orientation of the interfaces on the number of interfaces likely to be damaged first.
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页数:14
相关论文
共 57 条
[1]   Microstructure scale modelling of the WC and Co phases plastic behaviour in the WC-Co composite with different cobalt contents and for different temperatures. Comparison of the Drucker-Prager and Mises models [J].
Agode, K. E. ;
Wolff, C. ;
Nouari, M. ;
Moufki, A. .
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2021, 99
[2]  
BETTERIDGE W, 1979, PROG MATER SCI, V24, P51
[3]   FRACTURE TOUGHNESS AND FRACTURE OF WC-CO COMPOSITES [J].
CHERMANT, JL ;
OSTERSTOCK, F .
JOURNAL OF MATERIALS SCIENCE, 1976, 11 (10) :1939-1951
[4]   Fracture modelling of WC-Co hardmetals using crystal plasticity theory and the Gurson model [J].
Connolly, P ;
McHugh, PE .
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 1999, 22 (01) :77-86
[5]   Deformation and fracture of WC grains and grain boundaries in a WC-Co hardmetal during microcantilever bending tests [J].
Csanadi, Tamas ;
Vojtko, Marek ;
Dusza, Jan .
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2020, 87
[6]  
Debras C., 2016, Analyse multifactorielle de la derive vers l'usure des outillages de frappe a froid
[7]   Fracture energy based approach for cemented carbides grain debonding [J].
Debras, Colin ;
Dubar, Laurent ;
Dubar, Mirentxu ;
Hubert, Cedric ;
Dubois, Andre .
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2019, 161
[8]   Modelling of microcracks initiation and evolution along interfaces of the WC/Co composite by the finite element method [J].
Debski, Hubert ;
Sadowski, Tomasz .
COMPUTATIONAL MATERIALS SCIENCE, 2014, 83 :403-411
[9]  
DOI H, 1970, METALL TRANS, V1, P1417, DOI 10.1007/BF02900264
[10]  
Doi H., 1974, Elastic and Plastic Properties of WC-Co Composite Alloys