Process and Microstructure Properties of Laser MIG Hybrid Welding for Medium-thick Aluminium Alloy Plate

MA Guolong; MA Yin; LI Shuaizhen; YANG Zhibin; HAN Xiaohui

doi:10.7512/j.issn.1001-2303.2024.09.03

High-performance Welding Manufacturing of Rail Vehicles | Views : 0 下载量: 3 CSCD: 0

PDF
Export
Share
Collection
Album

Process and Microstructure Properties of Laser MIG Hybrid Welding for Medium-thick Aluminium Alloy Plate
Vol. 54, Issue 9, Pages: 24-29(2024)
Published： 25 September 2024 ，
DOI： 10.7512/j.issn.1001-2303.2024.09.03
稿件说明：

移动端阅览

马国龙，马寅，李帅贞，等.中厚板铝合金激光-MIG复合焊接工艺及组织性能［J］.电焊机，2024，54（9）：24-29.

MA Guolong, MA Yin, LI Shuaizhen, et al.Process and Microstructure Properties of Laser MIG Hybrid Welding for Medium-thick Aluminium Alloy Plate[J].Electric Welding Machine, 2024, 54(9): 24-29.
马国龙，马寅，李帅贞，等.中厚板铝合金激光-MIG复合焊接工艺及组织性能［J］.电焊机，2024，54（9）：24-29. DOI： 10.7512/j.issn.1001-2303.2024.09.03.

MA Guolong, MA Yin, LI Shuaizhen, et al.Process and Microstructure Properties of Laser MIG Hybrid Welding for Medium-thick Aluminium Alloy Plate[J].Electric Welding Machine, 2024, 54(9): 24-29. DOI： 10.7512/j.issn.1001-2303.2024.09.03.

摘要

针对8 mm厚6005A-T6铝合金，分别采用I形坡口和Y形坡口进行激光-MIG复合焊接试验，通过对比研究不同坡口形式接头的焊缝成形、组织特征、硬度分布和拉伸性能，分析坡口形式对接头性能的影响规律。结果表明，两种坡口形式均能获得高质量的焊缝，但I形坡口焊缝的电弧主要作用区熔深更大。焊缝中心均为树枝状晶并且晶粒尺寸类似，与Y形坡口相比，I形坡口焊缝柱状晶区的宽度更大，且热影响区存在晶粒粗大的现象。I形坡口焊缝区和熔合线附近的硬度均低于Y形坡口，而热影响区的硬度高于Y形坡口。I形坡口和Y形坡口接头的平均抗拉强度分别为202.0 MPa和205.2 MPa，试样均断裂在熔合线附近，断裂路径与熔合线一致，断口呈现典型的塑性断裂特征。

Abstract

In this paper

laser-MIG hybrid welding experiments were carried out on the 8mm thick 6005A-T6 aluminum alloy. The weld formations

microstructures

microhardness distributions and tensile properties with different groove shapes were comparative studied. The results indicated that both I-shape and Y-shape grooves could obtain high quality welds

but the arc action zone penetration of I-shape groove was larger. The weld centers of I-shape and Y-shape grooves were dendritic and had similar grain size. Compared with Y-shape groove

the columnar crystal zone width of I-shape groove weld was larger than that of Y-shape groove

and the grain size in the heat-affected zone of I-shape groove weld was coarse. The microhardness values in the weld zone and near the fusion of I-groove shape were both lower than those of Y-shape groove

and the microhardness of heat-affected zone was higher than that of Y-shape groove. The average tensile strengths of I-shape and Y-shape joints were 202.0 MPa and 205.2 MPa

respectively. The samples fractured near the fusion line

and the fracture paths were consistent with the fusion line. The fracture showed typical plastic fracture features.

关键词

铝合金激光-MIG复合焊坡口形式焊缝成形组织性能

Keywords

aluminum alloylaser-MIG hybrid weldinggroove shapeweld formationmechanical properties

references

韩晓辉，张志毅，李刚卿，等. 轨道客车轻量化材料及其连接技术的发展与展望［J］. 焊接，2020（10）：34-42.

HAN X H，ZHANG Z Y，LI G Q，et al. Development and prospect of lightweight material and connection technology of rail bus［J］. Welding & Joining，2020（10）：34-42.

彭蝶，张连华，韩晓辉，等. 轨道交通制造焊接技术应用现状及发展趋势［J］. 金属加工（热加工），2020（8）：6-9+13.

PENG D，ZHANG L H，HAN X H，et al. Application status and development trend of welding technology in rail transit manufacturing［J］. MW Metal Foriming，2020（8）：6-9+13.

HAN X H，YANG Z B，MA Y，et al. Comparative study of laser-arc hybrid welding for AA6082-T6 aluminum alloy with two different arc modes［J］. Metals，2020，10：407.

李春广，朱伟，丁洁琼，等. 6005A铝合金激光-MIG复合焊接与MIG焊接残余应力对比［J］. 电焊机，2015，45（3）：6-9.

LI C G，ZHU W，DING J Q，et al. Contrast of the residual stress of 6005A aluminum alloy welded by laser-MIG hybrid welding and MIG welding［J］. Electric Welding Machine，2015，45（3）：6-9.

陶传琦，汪认，崔云龙. 15 mm厚A7N01铝合金MIG与激光-MIG复合焊接对比［J］. 电焊机，2015，45（1）：108-110+119.

TAO C Q，WANG R，CUI Y L. Contrast of MIG welding and Laser-MIG hybrid welding on 15 mm thickness A7N01 aluminum alloy［J］. Electric Welding Machine，2015，45（1）：108-110+119.

陈辉，苟国庆，朱宗涛，等. 激光-MIG复合焊工艺及其在轨道交通领域应用现状［J］. 电焊机，2015，45（5）：11-14.

CHEN H，GOU G Q，ZHU Z T，et al. Laser-compound MIG welding process and its application status in the field of rail transit［J］. Electric Welding Machine，2015，45（5）：11-14.

Han X，Yang Z，Ma Y，et al. Laser-MIG hybrid welding of aluminium alloy extrusions for high-speed trains：effects of gap width on microstructure and properties［J］. Welding International，2023，37（6）：334-343.

姜艳，马国龙，马寅，等. 高速列车铝合金车体典型接头激光-MIG复合焊接特性研究［J］. 电焊机，2022，52（10）：1-8.

JIANG Y，MA G L，MA Y，et al. Study on laser-MIG hybrid welding characteristics of typical joints of aluminum alloy carbody for high speed train［J］. Electric Welding Machine，2022，52（10）：1-8.

马国龙，张志毅，毛镇东，等. 高速列车用铝合金型材激光-MIG复合焊工艺特性及组织性能［J］. 材料导报，2023，37（12）：191-196.

MA G L，ZHANG Z Y，MAO Z D，et al. Processing characteristics and joints properties of laser-MIG hybrid welding for aluminium alloy of high-speed trains［J］. Materials Reports，2023，37（12）：191-196.

YANG Z，DU L，WANG X. Effect of assembling clearance on welding characteristics of laser-MIG hybrid welding for aluminum alloy extrusions［J］. The International Journal of Advanced Manufacturing Technology，2023，129（7）：3523-3535.

ZHAO Y，ZHOU X，LIU T，et al. Investigate on the porosity morphology and formation mechanism in laser-MIG hybrid welded joint for 5A06 aluminum alloy with Y-shaped groove［J］. Journal of Manufacturing Processes，2020，57：847-856.

WANG K，JIAO X，ZHU J，et al. Research on the effect of weld groove on the quality and stability of laser-MAG hybrid welding in horizontal position［J］. Welding in the World，2021，65：1701-1709.

HUANG A，ZHANG J，GAO C，et la. Effects of groove constraint space on plasma characteristics during Laser-MIG hybrid welding of Titanium alloy［J］. Journal of Manufacturing Processes，2019，48：137-144.

马寅，韩晓辉，杨志斌，等. 坡口尺寸对铝合金激光-MIG复合焊焊缝成形及力学性能的影响［J］. 大连交通大学学报，2021，42（01）：57-61.

MA Y，HAN X H，YANG Z B，et al. Effects of groove size on weld formation and mechanical property of laser-MIG hybrid welded aluminum alloy joint［J］. Journal of Dalian Jiaotong University，2021，42（01）：57-61.

方喜风，汪认，崔云龙. A7N01铝合金激光-MIG复合焊接坡口选择［J］. 电焊机，2014，44（12）：153-157.

FANG X F，WANG R，CUI Y L. Choice of groove for laser-MIG hybrid welding on A7N01 aluminum alloy［J］.Electric Welding Machine，2014，44（12）：153-157.

SQUILLACE A，PRISCO U. Influence of filler material on micro and macro mechanical behavior of laser-beam-welded T-joint for aerospace applications［J］. Journal of Materials Design & Applications，2009，223（3）：103-115.

KUO T Y，LIN H C. Effects of pulse level of Nd-YAG laser on tensile properties and formability of laser weldments in automotive aluminum alloys［J］. Materials Science and Engineering A，2006，416：281-289.

HUANG C，KOU S. Partially melted zone in aluminium welds： solute segregation and mechanical behaviour［J］. Welding Journal，2001，80：9-17.

Alert me when the article has been cited

提交

Study on Laser-MIG Hybrid Welding Characteristics of Typical Joints of Aluminum Alloy Carbody for High Speed Train

Influences of laser cleaning on surface morphology and laser-MIG hybrid welding characteristics of aluminum alloy

High Efficiency Magnetic Control Arc Welding Process of Aluminum Alloy Long and Thin Wall Pulse Composite for Rail Vehicles

Effect of Closed Self-fusion Welding Process Parameters on Weld Forming of Thin Thickness Stainless-steel Tube

Comparison of Forming Quality, Microstructure and Properties of Four Types of Aluminum Alloy Components Fabricated by Wire and Arc Additive Manufacturing