Effect of Scanning Path on the Thermal Stress of Titanium Alloy in the Laser Cladding

Abstract:

Laser cladding on the titanium alloy is widely applied with the development of laser technology in the industry. However, the cracks, produced during the process, greatly confine the development of laser cladding technology. Cracks are mainly resulted from the over high thermal stress in the coatings, so it is extreme important to confine the thermal stress of cladding coatings. To investigate the influence of process parameters on the cladding coating's stress, the model of laser cladding based on Ti-6Al-4V is built in the way of finite element method (FEM) and three different scanning paths are chosen to calculate the stress of cladding layer. The results show that the spire-in scanning path is the best way to minimize the cladding coatings’ thermal stress. The numerical results provide the theoretical guidance for optimization of the laser cladding process on titanium alloys.

• Periodical: Advanced Materials Research (Volumes 418-420)
• Pages: 1538-1541
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.418-420.1538
• Online since: December 2011
• Authors: Zhi Ren, Yan Ling Tian, Ming Yue Zhou, Huan Ying Zheng, Shuai Zhang
• Keywords: Finite Element Method (FEM), Scanning Paths, Stress Field, Ti6Al4V

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