Effect of filling materials on the microstructure and properties of hybrid laser welded Al-Mg-Si alloys joints

Shaohua Yan; Bobin Xing; Haiyang Zhou; Yi Xiao; Qing Hua Qin; Hui Chen

doi:10.1016/j.matchar.2018.07.018

Effect of filling materials on the microstructure and properties of hybrid laser welded Al-Mg-Si alloys joints

Shaohua Yan, Bobin Xing, Haiyang Zhou, Yi Xiao, Qing Hua Qin^*, Hui Chen

^*Corresponding author for this work

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

58 Citations (Scopus)

Abstract

A serious investigation was conducted to examine the influence of filling materials on the microstructure and properties of hybrid laser welded AA6061-T6 joints. The results of the tensile tests showed that the welded joint with ER4043 filling materials had higher tensile strength than that with ER5356 filling material. Based on the results obtained a strength model was built to predict and explain the enhancement of the yield strength of the hybrid laser welded AA6061-T6 joint with different welding wires. In contrast to the tensile strength, the ER4043 joint showed lower fatigue strength than that of the ER5356 joint due to extensive presence of micropores in fusion zone. Further, the corrosion experiment illustrated that the ER4043 joint had poorer resistance to the corrosive attack under 3.5% NaCl solution. A summary was made on the performance of both welded joints to shed new insights on selecting appropriate filling materials when welding AA6061-T6 by hybrid laser welding method.

Original language	English
Pages (from-to)	205-218
Number of pages	14
Journal	Materials Characterization
Volume	144
DOIs	https://doi.org/10.1016/j.matchar.2018.07.018
Publication status	Published - Oct 2018

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title = "Effect of filling materials on the microstructure and properties of hybrid laser welded Al-Mg-Si alloys joints",

abstract = "A serious investigation was conducted to examine the influence of filling materials on the microstructure and properties of hybrid laser welded AA6061-T6 joints. The results of the tensile tests showed that the welded joint with ER4043 filling materials had higher tensile strength than that with ER5356 filling material. Based on the results obtained a strength model was built to predict and explain the enhancement of the yield strength of the hybrid laser welded AA6061-T6 joint with different welding wires. In contrast to the tensile strength, the ER4043 joint showed lower fatigue strength than that of the ER5356 joint due to extensive presence of micropores in fusion zone. Further, the corrosion experiment illustrated that the ER4043 joint had poorer resistance to the corrosive attack under 3.5% NaCl solution. A summary was made on the performance of both welded joints to shed new insights on selecting appropriate filling materials when welding AA6061-T6 by hybrid laser welding method.",

keywords = "Aluminium alloys, Fatigue and corrosion resistance, Hybrid laser welding, Mechanical properties, Microstructure",

author = "Shaohua Yan and Bobin Xing and Haiyang Zhou and Yi Xiao and Qin, {Qing Hua} and Hui Chen",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Inc.",

year = "2018",

month = oct,

doi = "10.1016/j.matchar.2018.07.018",

language = "English",

volume = "144",

pages = "205--218",

journal = "Materials Characterization",

issn = "1044-5803",

publisher = "Elsevier Inc.",

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T1 - Effect of filling materials on the microstructure and properties of hybrid laser welded Al-Mg-Si alloys joints

AU - Yan, Shaohua

AU - Xing, Bobin

AU - Zhou, Haiyang

AU - Xiao, Yi

AU - Qin, Qing Hua

AU - Chen, Hui

PY - 2018/10

Y1 - 2018/10

N2 - A serious investigation was conducted to examine the influence of filling materials on the microstructure and properties of hybrid laser welded AA6061-T6 joints. The results of the tensile tests showed that the welded joint with ER4043 filling materials had higher tensile strength than that with ER5356 filling material. Based on the results obtained a strength model was built to predict and explain the enhancement of the yield strength of the hybrid laser welded AA6061-T6 joint with different welding wires. In contrast to the tensile strength, the ER4043 joint showed lower fatigue strength than that of the ER5356 joint due to extensive presence of micropores in fusion zone. Further, the corrosion experiment illustrated that the ER4043 joint had poorer resistance to the corrosive attack under 3.5% NaCl solution. A summary was made on the performance of both welded joints to shed new insights on selecting appropriate filling materials when welding AA6061-T6 by hybrid laser welding method.

AB - A serious investigation was conducted to examine the influence of filling materials on the microstructure and properties of hybrid laser welded AA6061-T6 joints. The results of the tensile tests showed that the welded joint with ER4043 filling materials had higher tensile strength than that with ER5356 filling material. Based on the results obtained a strength model was built to predict and explain the enhancement of the yield strength of the hybrid laser welded AA6061-T6 joint with different welding wires. In contrast to the tensile strength, the ER4043 joint showed lower fatigue strength than that of the ER5356 joint due to extensive presence of micropores in fusion zone. Further, the corrosion experiment illustrated that the ER4043 joint had poorer resistance to the corrosive attack under 3.5% NaCl solution. A summary was made on the performance of both welded joints to shed new insights on selecting appropriate filling materials when welding AA6061-T6 by hybrid laser welding method.

KW - Aluminium alloys

KW - Fatigue and corrosion resistance

KW - Hybrid laser welding

KW - Mechanical properties

KW - Microstructure

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U2 - 10.1016/j.matchar.2018.07.018

DO - 10.1016/j.matchar.2018.07.018

M3 - Article

SN - 1044-5803

VL - 144

SP - 205

EP - 218

JO - Materials Characterization

JF - Materials Characterization

ER -

Effect of filling materials on the microstructure and properties of hybrid laser welded Al-Mg-Si alloys joints

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