The influence of laser power on microstructure and properties of laser welding-brazing of Al alloys to Al-Si coated 22MnB5 steel

Jin Yang; Ming Xiao; Lingqing Wu; Zhuguo Li; Hongbing Liu; Yixuan Zhao; Wei Guo; Caiwang Tan

doi:10.1016/j.optlastec.2023.109318

The influence of laser power on microstructure and properties of laser welding-brazing of Al alloys to Al-Si coated 22MnB5 steel

Jin Yang^*
, Ming Xiao
, Lingqing Wu
, Zhuguo Li
, Hongbing Liu
, Yixuan Zhao^*
, Wei Guo
, Caiwang Tan

^*Corresponding author for this work

School of Mechanical Engineering and Automation

Shanghai University of Engineering Science
Shanghai Collaborative Innovation Center of Laser Advanced Manufacturing Technology
Shanghai Jiao Tong University
Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

Laser welding-brazing of 5052 aluminum alloys and Al-Si coated 22MnB5 steel was carried out with a Zn-22Al filler metal. The influence of laser power on weld appearance, interfacial microstructure and mechanical properties were investigated. The weld morphology and the interfacial microstructure changed significantly with laser power. When the laser power was 1500 W, the intermetallic compounds (IMCs) at the FZ/steel interface consisted of Fe₂Al₇Si which was pre-existed in the Al-Si coating. As the laser power increased from 1700 W to 2100 W, the interfacial IMCs changed to Fe₂Al_5-xZn_x and FeZn₁₀. With the increase of the laser power, the tensile strength raised first and then decreased, the maximum value of 135.0 N/mm was obtained at 1900 W laser power. Differently, the bending angle first decreased and then increased with the increase of laser power. Numerical simulations showed that the maximum interfacial temperature increased from 835.7 ℃ to 1424.6 ℃ as the laser power increased from 1500 W to 2100 W. It resulted in the total dissolution of Fe₂Al₇Si and the newly generation of Fe₂Al_5-xZn_x and FeZn₁₀ therefore inducing the change of joint mechanical properties.

Original language	English
Article number	109318
Journal	Optics and Laser Technology
Volume	162
DOIs	https://doi.org/10.1016/j.optlastec.2023.109318
State	Published - Jul 2023

Keywords

Dissimilar Al/steel joining
Intermetallic compounds
Laser welding-brazing
Mechanical properties
Temperature field

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10.1016/j.optlastec.2023.109318

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@article{25a680de18c64f65a6b0bd8220511645,

title = "The influence of laser power on microstructure and properties of laser welding-brazing of Al alloys to Al-Si coated 22MnB5 steel",

abstract = "Laser welding-brazing of 5052 aluminum alloys and Al-Si coated 22MnB5 steel was carried out with a Zn-22Al filler metal. The influence of laser power on weld appearance, interfacial microstructure and mechanical properties were investigated. The weld morphology and the interfacial microstructure changed significantly with laser power. When the laser power was 1500 W, the intermetallic compounds (IMCs) at the FZ/steel interface consisted of Fe2Al7Si which was pre-existed in the Al-Si coating. As the laser power increased from 1700 W to 2100 W, the interfacial IMCs changed to Fe2Al5-xZnx and FeZn10. With the increase of the laser power, the tensile strength raised first and then decreased, the maximum value of 135.0 N/mm was obtained at 1900 W laser power. Differently, the bending angle first decreased and then increased with the increase of laser power. Numerical simulations showed that the maximum interfacial temperature increased from 835.7 ℃ to 1424.6 ℃ as the laser power increased from 1500 W to 2100 W. It resulted in the total dissolution of Fe2Al7Si and the newly generation of Fe2Al5-xZnx and FeZn10 therefore inducing the change of joint mechanical properties.",

keywords = "Dissimilar Al/steel joining, Intermetallic compounds, Laser welding-brazing, Mechanical properties, Temperature field",

author = "Jin Yang and Ming Xiao and Lingqing Wu and Zhuguo Li and Hongbing Liu and Yixuan Zhao and Wei Guo and Caiwang Tan",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

month = jul,

doi = "10.1016/j.optlastec.2023.109318",

language = "英语",

volume = "162",

journal = "Optics and Laser Technology",

issn = "0030-3992",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - The influence of laser power on microstructure and properties of laser welding-brazing of Al alloys to Al-Si coated 22MnB5 steel

AU - Yang, Jin

AU - Xiao, Ming

AU - Wu, Lingqing

AU - Li, Zhuguo

AU - Liu, Hongbing

AU - Zhao, Yixuan

AU - Guo, Wei

AU - Tan, Caiwang

PY - 2023/7

Y1 - 2023/7

N2 - Laser welding-brazing of 5052 aluminum alloys and Al-Si coated 22MnB5 steel was carried out with a Zn-22Al filler metal. The influence of laser power on weld appearance, interfacial microstructure and mechanical properties were investigated. The weld morphology and the interfacial microstructure changed significantly with laser power. When the laser power was 1500 W, the intermetallic compounds (IMCs) at the FZ/steel interface consisted of Fe2Al7Si which was pre-existed in the Al-Si coating. As the laser power increased from 1700 W to 2100 W, the interfacial IMCs changed to Fe2Al5-xZnx and FeZn10. With the increase of the laser power, the tensile strength raised first and then decreased, the maximum value of 135.0 N/mm was obtained at 1900 W laser power. Differently, the bending angle first decreased and then increased with the increase of laser power. Numerical simulations showed that the maximum interfacial temperature increased from 835.7 ℃ to 1424.6 ℃ as the laser power increased from 1500 W to 2100 W. It resulted in the total dissolution of Fe2Al7Si and the newly generation of Fe2Al5-xZnx and FeZn10 therefore inducing the change of joint mechanical properties.

AB - Laser welding-brazing of 5052 aluminum alloys and Al-Si coated 22MnB5 steel was carried out with a Zn-22Al filler metal. The influence of laser power on weld appearance, interfacial microstructure and mechanical properties were investigated. The weld morphology and the interfacial microstructure changed significantly with laser power. When the laser power was 1500 W, the intermetallic compounds (IMCs) at the FZ/steel interface consisted of Fe2Al7Si which was pre-existed in the Al-Si coating. As the laser power increased from 1700 W to 2100 W, the interfacial IMCs changed to Fe2Al5-xZnx and FeZn10. With the increase of the laser power, the tensile strength raised first and then decreased, the maximum value of 135.0 N/mm was obtained at 1900 W laser power. Differently, the bending angle first decreased and then increased with the increase of laser power. Numerical simulations showed that the maximum interfacial temperature increased from 835.7 ℃ to 1424.6 ℃ as the laser power increased from 1500 W to 2100 W. It resulted in the total dissolution of Fe2Al7Si and the newly generation of Fe2Al5-xZnx and FeZn10 therefore inducing the change of joint mechanical properties.

KW - Dissimilar Al/steel joining

KW - Intermetallic compounds

KW - Laser welding-brazing

KW - Mechanical properties

KW - Temperature field

UR - https://www.scopus.com/pages/publications/85149168029

U2 - 10.1016/j.optlastec.2023.109318

DO - 10.1016/j.optlastec.2023.109318

M3 - 文章

AN - SCOPUS:85149168029

SN - 0030-3992

VL - 162

JO - Optics and Laser Technology

JF - Optics and Laser Technology

M1 - 109318

ER -

The influence of laser power on microstructure and properties of laser welding-brazing of Al alloys to Al-Si coated 22MnB5 steel

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