AISI 304钢-铌异种金属激光焊温度场及残余应力研究

施超; 石铭霄; 赵健; 陈书锦; 杨志东

doi:10.16080/j.issn1671–833x.2019.23/24.059

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AISI 304钢-铌异种金属激光焊温度场及残余应力研究

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- AISI 304钢-铌异种金属激光焊温度场及残余应力研究
- 航空制造技术 2019年62卷第23/24期
- 作者机构：
  
  1. 江苏科技大学材料科学与工程学院,镇江,212003
  2. 上海工程技术大学材料工程学院,上海,201620
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671–833x.2019.23/24.059
  中图分类号：
- 纸质出版：2019
- 稿件说明：
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施超，石铭霄，赵健，陈书锦，杨志东. AISI 304钢-铌异种金属激光焊温度场及残余应力研究[J]. 航空制造技术, 2019, 62(23/24): 59-65. SHI Chao, SHI Mingxiao, ZHAO Jian, CHEN Shujin, YANG Zhidong. Temperature Fields and Residual Stress of Laser Welded AISI 304 Steel-Niobium Dissimilar Joint[J]. Aeronautical Manufacturing Technology, 2019, 62(23/24): 59-65.

SHI Chao, SHI Mingxiao, ZHAO Jian, et al. Temperature Fields and Residual Stress of Laser Welded AISI 304 Steel-Niobium Dissimilar Joint[J]. Aeronautical Manufacturing Technology, 2019, 62(23/24).
施超，石铭霄，赵健，陈书锦，杨志东. AISI 304钢-铌异种金属激光焊温度场及残余应力研究[J]. 航空制造技术, 2019, 62(23/24): 59-65. SHI Chao, SHI Mingxiao, ZHAO Jian, CHEN Shujin, YANG Zhidong. Temperature Fields and Residual Stress of Laser Welded AISI 304 Steel-Niobium Dissimilar Joint[J]. Aeronautical Manufacturing Technology, 2019, 62(23/24): 59-65. DOI： 10.16080/j.issn1671–833x.2019.23/24.059.

SHI Chao, SHI Mingxiao, ZHAO Jian, et al. Temperature Fields and Residual Stress of Laser Welded AISI 304 Steel-Niobium Dissimilar Joint[J]. Aeronautical Manufacturing Technology, 2019, 62(23/24). DOI： 10.16080/j.issn1671–833x.2019.23/24.059.

摘要

采用 SYSWELD软件，对 AISI 304钢–铌异种金属激光焊接过程进行动态模拟，在研究了 AISI 304钢–铌异种金属激光焊接接头温度场的基础上，分析了焊后薄板的残余应力分布。结果表明：异种金属焊接温度场呈不对称分布，铌侧高温区域比不锈钢侧要宽；沿焊接方向上，无论是横向残余应力还是纵向残余应力，焊缝中部区域都存在最大残余拉应力；而垂直于焊缝方向上，横向残余应力和纵向残余应力在焊缝及焊缝附近区域应力梯度都比较大，分布形态都呈“M”状，纵向残余应力在焊缝区表现为残余拉应力，而横向残余应力在焊缝中心处出现了压应力。

Abstract

The dynamic simulation of AISI 304 steel–Nb dissimilar metal laser welding process is carried out by using SYSWELD software. On the basis of studying the temperature field of laser welded AISI 304 steel–Nb dissimilar joint

the residual stress distribution of welded sheet is analyzed. The results show that the temperature field of dissimilar metal welding is asymmetrical

and the high temperature region of Nb side is wider than that of stainless steel side. And there is the maximum residual tensile stress in the middle of weld along the welding direction

whether transverse residual stress or longitudinal residual stress. Perpendicular to the weld direction

the transverse residual stress and longitudinal residual stress are larger in the welding line near line section

and the distribution pattern is “M”. The longitudinal residual stress is residual tensile stress in the weld zone

and the transverse residual stress appears compressive stress in the center of the weld.

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