Numerical and experiment analysis of residual stress on magnesium alloy and steel butt joint by hybrid laser-TIG welding

Zeng, Zhi; Li, Xunbo; Miao, Yugang; Wu, Gang; Zhang, Zhao

doi:10.1016/j.commatsci.2011.01.011

Cited by 35 publications

(8 citation statements)

References 12 publications

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“…Generation of excessive residual stresses can lead to distortions, premature failures, fatigue cracking and many other severe problems. Residual stress generated in a weld joint can be measured by some surface based techniques [ 142 ] named centre-hole drilling [ 143 ], magnetic methods and X-ray diffraction [ 144 ] or by some volumetric techniques [ 142 ] such as the inherent strain method, deep hole drilling, the contour method, neutron diffraction method. Laser welding of steel/Mg faces a faster exposure of weld region and narrow volumetric weld zone which is beneficial if comparison is made with the other fusion welding processes.…”

Section: Residual Stressesmentioning

confidence: 99%

Progressive developments and challenges in dissimilar laser welding of steel to various other light alloys (Al/Ti/Mg): A comprehensive review

Ghosh

Sen

Chattopadhyaya

et al. 2022

Heliyon

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Section: Residual Stressesmentioning

confidence: 99%

Progressive developments and challenges in dissimilar laser welding of steel to various other light alloys (Al/Ti/Mg): A comprehensive review

Ghosh

Sen

Chattopadhyaya

et al. 2022

Heliyon

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“…All reported a compressive residual stress in the sub-surface layer of the shot peened samples. Other studies measured the residual stresses from welding Mg alloys at different distances from the weld centerline: friction stir welding of AZ31 [ 7 ], friction stir welding of ZK60 [ 8 ], tubular laser welding of AZ31 [ 9 ], butt joint welding of AZ31B and 304L steel alloy by hybrid laser-TIG [ 10 ], and laser beam welding of AZ31B [ 11 ]. The residual stress in the longitudinal and transverse directions of AZ91 welded by a CO 2 laser as well as the in-depth distribution of residual stress using the layer removal method were studied by Kouadri and Barrallier [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

On the Surface Residual Stress Measurement in Magnesium Alloys Using X-Ray Diffraction

Yazdanmehr

Jahed

2020

Materials

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X-ray penetration in magnesium alloys is significant due to the low X-ray mass attenuation coefficient. To measure the surface residual stresses in magnesium alloys, a correction needs to be made to account for penetration depth. The residual stresses in as-received and shot peened AZ31B-H24 rolled sheet samples were measured using two-dimensional X-ray diffraction (2D-XRD) method. The electro-polishing layer removal method was used to find the residual stress pattern at the surface and through the depth. The results show that the corrected residual stresses in a few tens of micrometers layer from the surface differ from the raw stresses. To better estimate the residual stress distribution in the surface, the grazing-incidence X-ray diffraction (GIXD) technique was applied. Additionally, micrographs of the lateral cross-section of the peened specimens confirmed the presence of microcracks in this region, causing the residual stresses to vanish. Due to the low X-ray absorption coefficient of Mg alloys, this study shows how a small uncertainty in a single raw measurement leads to high uncertainty in the corrected residual stresses. The results were corroborated with the hole drilling method of residual stress measurements. The corrected X-ray diffraction (XRD) results are in close agreement with the hole drilling and GIXD results.

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“…Two and three-dimensional approaches can be used. Zeng et al described the thermal elastic-plastic analysis using finite element techniques to analyze the thermos-mechanical behavior and evaluate the residual stresses and welding distortion on the AZ31B magnesium alloy and 304L steel butt joint in laser-TIG hybrid welding [7]. A modified three-dimensional conical heat source was used for performing the simulation in arc welding [8,9].…”

Section: Introductionmentioning

confidence: 99%

FEM Simulation of Dissimilar Aluminum Titanium Fiber Laser Welding Using 2D and 3D Gaussian Heat Sources

D’Ostuni

Leo

Casalino

2017

Metals

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For a dissimilar laser weld, the model of the heat source is a paramount boundary condition for the prediction of the thermal phenomena, which occur during the welding cycle. In this paper, both two-dimensional (2D) and three-dimensional (3D) Gaussian heat sources were studied for the thermal analysis of the fiber laser welding of titanium and aluminum dissimilar butt joint. The models were calibrated comparing the fusion zone of the experiment with that of the numerical model. The actual temperature during the welding cycle was registered by a thermocouple and used for validation of the numerical model. When it came to calculate the fusion zone dimensions in the transversal section, the 2D heat source showed more accurate results. The 3D heat source provided better results for the simulated weld pool and cooling rate.

show abstract

Numerical and experiment analysis of residual stress on magnesium alloy and steel butt joint by hybrid laser-TIG welding

Cited by 35 publications

References 12 publications

Progressive developments and challenges in dissimilar laser welding of steel to various other light alloys (Al/Ti/Mg): A comprehensive review

Progressive developments and challenges in dissimilar laser welding of steel to various other light alloys (Al/Ti/Mg): A comprehensive review

On the Surface Residual Stress Measurement in Magnesium Alloys Using X-Ray Diffraction

FEM Simulation of Dissimilar Aluminum Titanium Fiber Laser Welding Using 2D and 3D Gaussian Heat Sources

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