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Effects of laser and GMA hybrid welding parameters on shape, residual stress and deformation of HSLA steel welds

  • Yongxin Lu

    Yongxin Lu, born 1986, graduated with a doctor’s degree from the School of Materials Science and Engineering, Tianjin University, China, in 2017. Then, he continued to work in the School of Materials Science and Engineering, Xi’an Shiyou University, China. Currently, he is a lecturer and his main research areas are control and simulation of welding stress and deformation.

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    , Xueli Xu

    Xueli Xu, born 1963, graduated with a master’s degree from Xi’an Jiaotong University. Then, he continued to work in the School of Materials Science and Engineering, Xi’an Shiyou University, China. Currently, he is a professor and his main research areas are material forming and control engineering.

    , Binhua Zhang

    Binhua Zhang, born 1996, graduated with a bachelor’s degree from the School of Materials Science and Engineering, Xi’an Shiyou University, China, in 2018. Currently, she is a graduate student at the School of Materials Science and Engineering, Xi’an Shiyou University, China. Her main research areas are welding residual stress, deformation control and finite element analysis of welded joints.

    , Wei Qiang

    Wei Qiang, born 1988, graduated with a doctor’s degree from the School of Materials Science and Engineering, Nanjing University of Science and Technology, China, in 2018. Then, he continued to work in the School of Materials Science and Engineering, Xi’an Shiyou University, China. Currently, he is a lecturer and his main research area is multi heat source high efficiency welding.

    , Hao Lu

    Hao Lu, born 1981, graduated with a doctor’s degree from Harbin Institute of Technology, China, in 2009. Now, he is a professor at the School of Material Science and Engineering, Xi’an Shiyou University, China. Currently, his main research areas are welding stress and deformation.

    , Dafeng Wang

    Dafeng Wang, born 1987, graduated with a doctor’s degree from the School of Materials Science and Engineering, University of Science and Technology Beijing, China, in 2017. Then, he continued to work in the Institute of Welding and Remanufacturing, Ningbo Branch of Chinese Academy of Ordnance Science, China. Currently, he is an associated professor and his main research areas are advanced welding technology.

    , Haitao Wang

    Haitao Wang, born 1984, and graduated with a master’s degree from the School of Materials Science and Engineering Lanzhou University of Technology, China, in 2010. Then, he continued to work in Baoji Petroleum Steel Pipe Co., Ltd. as a senior engineer, He is mainly engaged in the development of new oil and gas pipe products.

    and Zhou Wang

    Zhou Wang, born 1999, graduated with a bachelor’s degree from the School of Materials Science and Engineering, Xi’an Shiyou University, China, in 2020. Then, he worked at the West Pipeline Company, China.

From the journal Materials Testing

Abstract

As a high-efficiency and high-quality welding process, hybrid laser-MAG welding (HLMW) has significant potential of application in welding thick plates. In the present study, based on thermal elastic–plastic theory, a three-dimensional finite element model is developed to predict the weld shape characteristics, residual stress and distortion in HLMW for a butt joint of 12-mm-thick high strength steel plate. Metal active gas arc welding (MAG) heat input and laser energy are modeled as one double-ellipsoid body heat source and one cone body heat source with enhanced peak density along the central axis, respectively. The comparison between calculated molten pool shapes and those obtained by the experiment shows a good agreement. Then weld shape characteristic, residual stresses and distortions are calculated in four different welding process parameters. The results show that the increase of laser power and current can effectively increase the weld penetration width when the welding speed is fixed. At the top surfaces of weldment, the peak stress of high laser beam power is more significant than that of low laser beam power. A high compressive transverse stress of low laser beam power can be found at the welding zone and the surrounding heat affected zone. However, at the bottom surfaces of weldment, the peak stress of low laser beam power is larger than that of high laser beam power. The peak stress of low laser beam power is much larger than that of high laser beam power. A high compressive transverse stress of low laser beam power can be found at the welding zone. The vertical deformation in low laser beam power and low arc current welding has the lowest value.


Dr. Yongxin Lu School of Materials Science and Engineering Xi’an Shiyou University Xi’an 710065, P. R. China State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology Harbin 150001, P. R. China School of Materials Science and Engineering Northwestern Polytechnical University Xi’an 710072, P. R. China

About the authors

Dr. Yongxin Lu

Yongxin Lu, born 1986, graduated with a doctor’s degree from the School of Materials Science and Engineering, Tianjin University, China, in 2017. Then, he continued to work in the School of Materials Science and Engineering, Xi’an Shiyou University, China. Currently, he is a lecturer and his main research areas are control and simulation of welding stress and deformation.

Xueli Xu

Xueli Xu, born 1963, graduated with a master’s degree from Xi’an Jiaotong University. Then, he continued to work in the School of Materials Science and Engineering, Xi’an Shiyou University, China. Currently, he is a professor and his main research areas are material forming and control engineering.

Binhua Zhang

Binhua Zhang, born 1996, graduated with a bachelor’s degree from the School of Materials Science and Engineering, Xi’an Shiyou University, China, in 2018. Currently, she is a graduate student at the School of Materials Science and Engineering, Xi’an Shiyou University, China. Her main research areas are welding residual stress, deformation control and finite element analysis of welded joints.

Wei Qiang

Wei Qiang, born 1988, graduated with a doctor’s degree from the School of Materials Science and Engineering, Nanjing University of Science and Technology, China, in 2018. Then, he continued to work in the School of Materials Science and Engineering, Xi’an Shiyou University, China. Currently, he is a lecturer and his main research area is multi heat source high efficiency welding.

Hao Lu

Hao Lu, born 1981, graduated with a doctor’s degree from Harbin Institute of Technology, China, in 2009. Now, he is a professor at the School of Material Science and Engineering, Xi’an Shiyou University, China. Currently, his main research areas are welding stress and deformation.

Dafeng Wang

Dafeng Wang, born 1987, graduated with a doctor’s degree from the School of Materials Science and Engineering, University of Science and Technology Beijing, China, in 2017. Then, he continued to work in the Institute of Welding and Remanufacturing, Ningbo Branch of Chinese Academy of Ordnance Science, China. Currently, he is an associated professor and his main research areas are advanced welding technology.

Haitao Wang

Haitao Wang, born 1984, and graduated with a master’s degree from the School of Materials Science and Engineering Lanzhou University of Technology, China, in 2010. Then, he continued to work in Baoji Petroleum Steel Pipe Co., Ltd. as a senior engineer, He is mainly engaged in the development of new oil and gas pipe products.

Zhou Wang

Zhou Wang, born 1999, graduated with a bachelor’s degree from the School of Materials Science and Engineering, Xi’an Shiyou University, China, in 2020. Then, he worked at the West Pipeline Company, China.

Acknowledgement

The authors wish to acknowledge the financial supported by State Key Lab of Advanced Welding and Joining, Harbin Institute of Technology (Program No.: AWJ-21M21), and Natural Science Basic Research Program of Shaanxi (Program No.: 2020JQ-768).

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Published Online: 2021-08-18
Published in Print: 2021-08-31

© 2021 Walter de Gruyter GmbH, Berlin/Boston, Germany

Downloaded on 2.10.2023 from https://www.degruyter.com/document/doi/10.1515/mt-2020-0004/html
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