Fatigue behavior of PVD coated Ti-6Al-4V alloy

被引：83
作者：
Costa, M. Y. P. [1 ]
Venditti, M. L. R. [1 ]
Cioffi, M. O. H. [1 ]
Voorwald, H. J. C. [1 ]
Guimaraes, V. A. [1 ]
Ruas, R. [2 ]
机构：
[1] Univ Estadual Paulista, Fac Engn Guaratingueta, Mat & Technol Dept, Fatigue & Aeronaut Mat Res Grp, BR-12516410 Guaratingueta, SP, Brazil
[2] Brasimet Revestimentos PVD Ind SA, BR-04795912 Sao Paulo, Brazil
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2011年 / 33卷 / 06期
基金：
巴西圣保罗研究基金会;
关键词：
Fatigue strength; Titanium alloys; PVD coatings; TRIBOLOGICAL PROPERTIES; SURFACE TREATMENTS; WEAR-RESISTANCE; COATINGS; STRENGTH; STEEL; CORROSION; FRICTION; HVOF;
D O I：
10.1016/j.ijfatigue.2010.11.007
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The aim of the present work is to identify an environmentally clean coating process that will present lower influence in the Ti-6Al-4V fatigue strength. Axial fatigue tests of Ti-6Al-4V alloy TiN, CrN and WC:H (tungsten containing diamond-like carbon) Physical Vapor Deposition (PVD) coated was evaluated. Decrease in fatigue life was observed for coated specimens in comparison to base metal. Scanning Electron Microscopy technique was used to observe crack origin sites and coating thickness. DLC coating provides higher Ti-6Al-4V alloy PVD coated fatigue strength due to lower defects presence and the chromium interlayer, which acts as a barrier to fatigue crack propagation. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：759 / 765
页数：7
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