Constitutive model incorporating the strain-rate and state of stress effects for machining simulation of titanium alloy Ti6Al4V

被引:9
作者
Cheng, Wenyu [1 ]
Outeiro, Jose [1 ]
Costes, Jean-Philippe [1 ]
M'Saoubi, Rachid [2 ]
Karaouni, Habib [3 ]
Denguir, Lamice [1 ]
Astakhov, Viktor [4 ]
Auzenat, Francois [5 ]
机构
[1] Arts & Metiers ParisTech, LaBoMaP, Rue Porte Paris, F-71250 Cluny, France
[2] R&D Mat & Technol Dev Seco Tools AB, SE-73782 Fagersta, Sweden
[3] Safran Tech, Res & Technol Ctr, F-78772 Magny Les Hameaux, France
[4] Prod Serv Management Inc PSMi, Saline, MI USA
[5] R&D Milling & Proc, 22 Ave Prospect, F-18020 Bourges, France
来源
8TH CIRP CONFERENCE ON HIGH PERFORMANCE CUTTING (HPC 2018) | 2018年 / 77卷
关键词
Constitutive model; Metal cutting simulation; State of stress; FRACTURE;
D O I
10.1016/j.procir.2018.09.031
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Ti6Al4V titanium alloy is widely used in aero-engines due to its superior performance. However, as a difficult-to-cut alloy, it induces short cutting tool life and poor surface integrity. To improve these process outcomes, numerical simulations are of importance. The predictive ability of such simulation depends on the accuracy of the constitutive model which describes the work material behavior under loading conditions specific to metal cutting. Therefore, the focus of this paper is the formulation of a constitutive model to be used in the orthogonal cutting simulation of Ti6Al4V. The distinguished feature of this model is its simplicity, accounting for the strain-rate and state of stress effects in the work material deformation and fracture. The model coefficients were identified using mechanical tests and numerical simulations with specially-designed test specimens to cover a wide range of strain-rates and state of stress. Orthogonal cutting simulations were performed and the obtained results were compared with those measured. (C) 2018 The Authors. Published by Elsevier Ltd.
引用
收藏
页码:344 / 347
页数:4
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