Numerical Simulation of Temperature Field and Stress Field to Multiple Laser Cladding Co Coatings

Abstract:

In order to analyze temperature field and stress field of Co-based alloys laser cladding, the model of Co-based alloys laser cladding with preset-powder method has been made on low carbon steel substrate. The temperature field and stress field of laser cladding process was analyzed by SYSWELD software, and Experimental verification is done. The results showed that temperature field is appear to a trailing tail of comet, favorable metallurgy bonding with 12.3% dilution was obtained by scanning velocity was 4 mm/s. and instantaneous cooling rate of molten pool with 4 mm/s and 5 mm/s are increased to 1.47 times and 2.02 times of 3 mm/s. The transverse residual stress different nodes on the surface of coatings are always tensile stress, and it is almost steady, the maximum deformation is 0.34 mm at the edge of work-piece, these are consistent with experimental results. These results provide reference and guide to obtain high quality coatings.

• Periodical: Applied Mechanics and Materials (Volume 456)
• Pages: 382-387
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.456.382
• Online since: October 2013
• Authors: Lin Ding, Ming Xi Li, Dao Ye Huang, Hong Yun Jang
• Keywords: Co-Based Alloy, Laser Cladding, Stress Field, SYSWELD, Temperature Field

References

[1] Fang Luo, Jian-hua Yao, Xia-xia Hu, etal. Effect of laser power on the cladding temperature field and the heat affected zone[J]. Journal of Iron and Steel Research, International, 2011, 18(1): 73-78.

DOI: 10.1016/s1006-706x(11)60014-9

[2] Lin Ding, Ming-xi Li. Numerical simulation of temperature field of laser cladding Co-based alloy coatings[J]. Laser Technology, 2012, 36(1): 103-106.

[3] Hong-yun Zhao, Hong-tao Zhang, Chun-hua Xu, etal. Temperature and stress fields of multiple track laser cladding[J]. Transactions of Nonferrous Metals Society of China, 2009, 19: 495-501.

DOI: 10.1016/s1003-6326(10)60096-9

[4] Shao-jie Li, Xing-juan Fan, Xiao-liang Yao, etal. Numerical simulation of temperature field during super-alloy laser cladding[J]. Hot Working Technology, 2007, 36(19): 76-89.

[5] Wen-yue Zhang. Heat transfer in welding[M]. Bei Jing, China Machine Press, 1989: 5-64.

[6] Ming-zhe Xi, Gang Yu. Numerical simulation for the transient temperature field of 3D moving laser molten pool[J]. Chinese Journal of lasers, 2004, 12: 1527-1532.

[7] Zhen-zhong Guan. Technology handbook of laser processing[M]. The Front Page. Bei Jing, China Measure Press, 1998: 283.