Effect of welding speed on the microstructure and hardness distribution of laser beam welding joints

被引：0

作者：

Cao, Xin-Yuan ^{[1
]}

Luo, Kui-Lin ^{[1
]}

Lu, Yong-Hao ^{[1
]}

Li, Zhao-Deng ^{[1
]}

机构：

[1] School of National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing

来源：

Gongcheng Kexue Xuebao/Chinese Journal of Engineering | 2015年 / 37卷 / 06期

关键词：

Hardness; Laser beam welding; Microstructure; Speed; Stainless steel;

D O I：

10.13374/j.issn.2095-9389.2015.06.006

中图分类号：

学科分类号：

摘要：

Nuclear grade stainless steel welding joints were prepared by laser beam welding (LBW) at different welding speeds. Optical microscopy and scanning electron microscopy were subsequently used to study the weld penetration ratio, δ/γ ratio, microstructure, and phase composition. The hardness distribution was examined with a micro-Vickers hardness tester. When this welding speeds up, the weld penetration ratio and δ-ferrite content within the welding seam increase, the island and lath-shaped microstructures enlarge at the cost of the worm-like one, and the average hardness value in the weld area becomes greater. ©, 2015 All right reserved.

引用

页码：714 / 720

页数：6

共 17 条

[1]

Mcpherson N.A., Chi K., Baker T.N., Submerged arc welding of stainless steel and the challenge from the laser welding process, J Mater Process Technol, 134, 2, (2003)

[2]

Haga C., Ohta A., Hiraoka K., Welding in research project on frontier structural materials, J Jpn Weld Soc, 66, 8, (1997)

[3]

Liu Q.B., Laser Processing Technology and Its Applications, (2007)

[4]

You D.Y., Gao X.D., The research status and prospect of laser welding technology, Weld Technol, 37, 4, (2008)

[5]

Yu Y.N., Fundamentals of Materials Science, (2005)

[6]

Huang R., Kang L., Ma X., Microstructure and phase composition of a low-power YAG laser-MAG welded stainless steel joint, J Mater Eng Perform, 17, 6, (2008)

[7]

Gu Z., Yu S., Han L., Et al., Influence of welding speed on microstructures and properties of ultra-high strength steel sheets in laser welding, ISIJ Int, 52, 3, (2012)

[8]

SantillanEsquivel A., Nayak S.S., Xia M.S., Et al., Microstructure, hardness and tensile properties of fusion zone in laser welding of advanced high strength steels, Can Metall Q, 51, 3, (2012)

[9]

Gu Z.W., Yu S.B., Han L.J., Et al., Effect of welding speed on microstructure and micro hardness of the weld seam of laser welded ultra-high strength steel, J Jilin Univ Eng Technol Ed, 42, 3, (2012)

[10]

Li M., Li Z., Zhao Y., Et al., Influence of welding parameters on weld formation and microstructure of dual-laser beams welded T-joint of aluminum alloy, Adv Mater Sci Eng, 2011, (2011)

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