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激光焊接速度对焊缝组织和硬度分布的影响

曹鑫源, 罗奎林, 陆永浩, 李兆登

曹鑫源, 罗奎林, 陆永浩, 李兆登. 激光焊接速度对焊缝组织和硬度分布的影响[J]. 工程科学学报, 2015, 37(6): 714-720. DOI: 10.13374/j.issn2095-9389.2015.06.006
引用本文: 曹鑫源, 罗奎林, 陆永浩, 李兆登. 激光焊接速度对焊缝组织和硬度分布的影响[J]. 工程科学学报, 2015, 37(6): 714-720. DOI: 10.13374/j.issn2095-9389.2015.06.006
CAO Xin-yuan, LUO Kui-lin, LU Yong-hao, LI Zhao-deng. Effect of welding speed on the microstructure and hardness distribution of laser beam welding joints[J]. Chinese Journal of Engineering, 2015, 37(6): 714-720. DOI: 10.13374/j.issn2095-9389.2015.06.006
Citation: CAO Xin-yuan, LUO Kui-lin, LU Yong-hao, LI Zhao-deng. Effect of welding speed on the microstructure and hardness distribution of laser beam welding joints[J]. Chinese Journal of Engineering, 2015, 37(6): 714-720. DOI: 10.13374/j.issn2095-9389.2015.06.006

激光焊接速度对焊缝组织和硬度分布的影响

基金項目: 

国家科技重大专项(2011ZX06004-009-0603)

詳細信息
    通信作者:

    陆永浩,E-mail:lu_yonghao@mater.ustb.edu.cn

  • 分類號: TG142.71

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

  • 摘要: 利用激光焊接工艺焊接核级不锈钢,通过改变激光焊接速度得到不同的焊接接头.采用金相显微镜、扫描电子显微镜等手段研究了熔深比、δ/γ比、组织形貌以及焊缝中各相的成分.通过显微硬度测试了焊缝接头上硬度分布.随着焊接速度的增加,焊缝熔深比线性增加,焊缝中δ-铁素体含量增加,岛状组织增多,板条状组织增多,蠕虫状组织减少,焊缝区的平均硬度值增加.
    Abstract: 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, micro structure, 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.
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出版歷程
  • 收稿日期:  2014-02-08
  • 網絡出版日期:  2021-07-09
  • 刊出日期:  2015-06-24

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