Dissimilar Metals Co-Pool Laser Penetration Butt Welding of Layered Bimetallic Sheet

ZHANG Jianxun; GOU Ningnian

doi:10.16080/j.issn1671–833x.2018.17.016

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Dissimilar Metals Co-Pool Laser Penetration Butt Welding of Layered Bimetallic Sheet

更新时间：2025-10-30

- Dissimilar Metals Co-Pool Laser Penetration Butt Welding of Layered Bimetallic Sheet
- Aeronautical Manufacturing Technology Vol. 61, Issue 17, Pages: 16-22(2018)
- 作者机构：
  
  西安交通大学金属材料强度国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671–833x.2018.17.016
  CLC：
- Published：2018
- 稿件说明：
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张建勋，苟宁年. 层状金属复合材料激光穿透共熔池焊接研究[J]. 航空制造技术, 2018, 61(17): 16-22.

ZHANG Jianxun, GOU Ningnian. Dissimilar Metals Co-Pool Laser Penetration Butt Welding of Layered Bimetallic Sheet. Aeronautical Manufacturing Technology, 2018, 61(17): 16-22.
张建勋，苟宁年. 层状金属复合材料激光穿透共熔池焊接研究[J]. 航空制造技术, 2018, 61(17): 16-22. DOI： 10.16080/j.issn1671–833x.2018.17.016.

ZHANG Jianxun, GOU Ningnian. Dissimilar Metals Co-Pool Laser Penetration Butt Welding of Layered Bimetallic Sheet. Aeronautical Manufacturing Technology, 2018, 61(17): 16-22. DOI： 10.16080/j.issn1671–833x.2018.17.016.

摘要

介绍了一种适用于层状金属复合材料的高效连接技术。在激光穿透焊接时，熔池中液态金属会受到横向温度梯度引起的表面张力和穿透匙孔中喷射蒸汽摩擦力的共同作用而产生上下两个相对独立的涡流，这一现象会使熔池中上部和下部金属保持相对独立，从而促成焊缝金属的上下层状分布特征，利用这一现象，提出了层状金属复合材料的单道激光穿透共熔池高效焊接技术。利用该技术，成功实现了X65/DSS2205 双金属层状复合材料的对接焊，焊接接头组织和成分分析结果表明，焊缝组织上部和下部具有明显的差异性和独立特征，焊缝上下部的合金元素发生了相对较小的流动交换，优化的工艺条件可使复层焊缝金属的稀释率小于3%，使得复合板上层焊缝和下层焊缝金属达到了最大的相对独立性。

Abstract

In order to develop high quality and efficient welding technology which is suitable for layered bimetallic sheets

based on the Marangoni convection behavior of molten pool in full penetration welding processes

the dissimilar metals co-pool single pass laser butt welding of bimetallic sheets was presented

and the welding of X65/DSS2205 bimetallic sheet was implemented. Metallographic observations indicated that upper and lower welding seam has obvious characteristics of independent metallographic formation

and there are no indecisive boundaries between the two metallographic formations. The EDS results show that under the optimum process conditions (by orthogonal test)

the retention rate of alloying elements such as Cr

Ni and Mo were near 97%.

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