Influence of the residual stress state of coatings on the wear behavior in external turning of AISI 4140 and Ti–6Al–4V

被引：12

作者：

Breidenstein B. ^{[1
]}

Denkena B. ^{[1
]}

Vetter J. ^{[2
]}

Richter B. ^{[1
]}

机构：

[1] Institute of Production Engineering and Machine Tools (IFW), Leibniz Universität Hannover, An der Universität 2, Garbsen

[2] Oerlikon Metaplas GmbH, Am Boettcherberg 30-38, Bergisch Gladbach

来源：

Production Engineering | 2016年 / 10卷 / 02期

关键词：

Cutting tools; PVD coatings; Residual stresses; Steel; Titanium; Wear;

D O I：

10.1007/s11740-015-0650-7

中图分类号：

学科分类号：

摘要：

The residual stress state of coatings influences tool life and performance in machining significantly. Due to thermo-mechanical loads during the cutting process the coatings require tailored properties. Beside the coating structure the two most important properties are the residual stress state and the chemical composition of the coating. Therefore, the influence of these two properties is investigated in this study, comparing the cutting performance in continuous and interrupted cutting of 42CrMo4 (AISI 4140) and Ti–6Al–4V. It is shown that the residual stress states of the coating close to the surface and close to the substrate are important for the wear behavior. High compressive residual stresses near the substrate combined with a material-optimized composition increase the resistance against chipping. Flank wear resistance increases with high compressive residual stresses near the surface and decreasing stresses towards the substrate. © 2015, German Academic Society for Production Engineering (WGP).

引用

页码：147 / 155

页数：8

共 31 条

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