Laser treatment of HVOF coating: Modeling and measurement of residual stress in coating

被引:4
作者
Arif, A. F. M. [1 ]
Yilbas, B. S. [1 ]
机构
[1] KFUPM, Dept Mech Engn, Dhahran 31261, Saudi Arabia
关键词
coating; HVOF; laser; melting; residual; stress;
D O I
10.1007/s11665-008-9204-x
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
High-velocity oxy-fuel (HVOF) coating of diamalloy 1005 (similar to Inconel 625 alloy) onto the Ti-6Al-4V alloy is considered and laser-controlled melting of the coating is examined. The residual stress developed after the laser treatment process is modeled using the finite element method (FEM). The experiment is conducted to melt the coating using a laser beam. The residual stress measurement in the coating after the laser treatment process is realized using the XRD technique. The morphological and metallurgical changes in the coating are examined using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). It is found that the residual stress reduces at the coating-base material interface and the residual stress predicted agrees with the XRD measurements. A compact and crack-free coating is resulted after the laser treatment process.
引用
收藏
页码:644 / 650
页数:7
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