Simulation of microtexture developments in the stir zone of friction stir-welded AZ31 Mg alloys

Kim, M.S.; Jung, Jin-Woo; Song, Yi; Choi, Sung-Won

doi:10.1016/j.ijplas.2017.02.013

Cited by 22 publications

(4 citation statements)

References 65 publications

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“…For example, the material flow and temperature field (Nandan et al, 2006) near the probe surface have been predicted and the mechanical response (Chiumenti et al, 2013) have been analyzed during FSW process. Kim et al (2017) simulated the texture evolution in SZ of AZ31 Mg alloys during FSW process using a visco-plastic self-consistent (VPSC) polycrystal model. Ren et al (2019) developed a crystal plasticity finite element model (CPFEM) to simulate the localized deformation of an FSW AZ31 Mg joint during bending.…”

Section: Inhomogeneous Deformation Of Jointmentioning

confidence: 99%

Texture Related Inhomogeneous Deformation and Fracture Localization in Friction-Stir-Welded Magnesium Alloys: A Review

et al. 2020

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Friction stir welding (FSW) is a solid-state joining technique, which can avoid surface distortion and grain coarsening, and is very suitable for the joining of magnesium (Mg) alloys. However, a pronounced and inhomogeneous deformation texture was usually formed in the stir zone (SZ) of Mg welds. This has significant effect on the joint strength and fracture behavior of FSW Mg joints. In this review, microstructure and texture evolutions in weld zone (WZ) are analyzed based on the electron backscatter diffraction (EBSD) data. Schmid factor (SF) changes for slip and extension twinning were observed and discussed. The localized plastic deformation and fracture mechanisms of Mg welds are analyzed. In addition, some methods for improving the joint strength of FSW Mg welds are tested. Finally, the research direction of FSW Mg alloys in the future is determined.

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Section: Inhomogeneous Deformation Of Jointmentioning

confidence: 99%

Texture Related Inhomogeneous Deformation and Fracture Localization in Friction-Stir-Welded Magnesium Alloys: A Review

et al. 2020

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“…Speed of rotation of the tool, traversing speed (i.e., feed rate), force from upward direction (axial force), tilt angle of the FSW tool, depth of penetration etc are some of the important parameters of the FSW process, which were found to play an significant part in determining the microstructural characteristics and various mechanical properties of the fabricated joints [62][63][64][65]. Since the basic objective of this experimental investigation is to understand the level of feasibility of joining the AZ80A Mg alloys using the technique of friction stir welding, and to have a better knowledge on the role of various FSW process parameters in determining the various properties of the fabricated joints, the complete sequence of experiment was carried out using different combinations of two different process parameters namely speed of rotation of the FSW tool and traversing speed (i.e., rate of feed).…”

Section: Fsw Process Parametersmentioning

confidence: 99%

Experimental investigation on the improvement of the properties of the AZ80A Mg alloy joints using friction stir welding process

Sevvel¹,

Mahadevan²,

Sateš³

et al. 2019

FME Transactions

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An experimental investigation was conducted with the basic objective of demonstrating the feasibility of joining the AZ80A Mg alloys using the technique of friction stir welding (FSW). Good quality joints free from defects were obtained for 5mm thickness AZ80A Mg alloy flat plates at a speed of rotation of 750 rpm with a traversing speed of 1.5 mm/min, by employing a FSW tool fabricated out of M35 grade High Speed Steel(HSS). It was experimetally observed that, the nugget zone (NZ) of the defect free weldments were found with fine sized, equally spaced & uniformly distributed grains when compared with that of the parent metal. Apart from this, the heat affected zone (HAZ) lying beside the NZ was found to possess larger sized near equaxied grains due to the effect of annealing. The weld zones were found to possess regions of slight softening nature when compared to that of the parent metal, arising from the dislocation of the lower densities. Moreover, the tensile strength of the defect free weldments was found to be around 78% of the parent metal, which seems to better than that of the strengths obtained using conventional joining techniques.

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“…As a result, special care & consideration should be given, while choosing a appropriate process for joining com-ponents composed of AZ80A Mg alloy. Few & unlimited experimental works and investigations have been done on joining of wrought Mg alloys (like AZ31, AZ61, ZK60, AM60 etc) using the FSW process [42][43][44][45][46][47][48][49][50][51].…”

Section: Literature Reviewmentioning

confidence: 99%

“…Kim et al [51] carried out an experimental work on understanding the microtexture evolution, in the SZ (stir zone) of the fabricated AZ31 Mg alloy joints through advanced techniques namely polycrystal modeling and microtexture analysis. It was revealed by the employment of the analysis using the EBSD (electron back scatter diffraction) that, the process of FSW has induced to a greater extent, the formation of strong fibered textures in the SZ and this development of fibered textures were dependent on the moving track of the material point w.r.t the pin of the rotating of the FSW tool.…”

Section: Literature Reviewmentioning

confidence: 99%

Experimental study on the role of tool geometry in determining the strength & soundness of wrought Az80a Mg alloy joints during FSW process

Thangaiah¹,

Sevvel²,

Satheesh³

et al. 2018

FME Transactions

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An investigation was conducted to find out the influencing role of the geometry of the FSW tool on the tensile strength, corrosion resistance, wear rate of the wrought AZ80A Mg alloy joints during the FSW process. FSW tools with two uniquely different geometries, namely stepped cylindrical shoulder tool and stepless cylindrical shoulder tool were employed at different combinations of speeds of rotation and traversing speed. Comprehensive observations & investigations were also carried out regarding the tensile strength, wear losses & corrosion resistance of the fabricated joints. The joints fabricated using stepped cylindrical shoulder tool exhibited appreciable tensile strength values at combinations of higher traversing feeds and low values of rotational speeds of the FSW tool. At the same time, the joints possessing fine sized refined grains in their nugget zone have been found to exhibit higher wear losses.

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Simulation of microtexture developments in the stir zone of friction stir-welded AZ31 Mg alloys

Cited by 22 publications

References 65 publications

Texture Related Inhomogeneous Deformation and Fracture Localization in Friction-Stir-Welded Magnesium Alloys: A Review

Texture Related Inhomogeneous Deformation and Fracture Localization in Friction-Stir-Welded Magnesium Alloys: A Review

Experimental investigation on the improvement of the properties of the AZ80A Mg alloy joints using friction stir welding process

Experimental study on the role of tool geometry in determining the strength & soundness of wrought Az80a Mg alloy joints during FSW process

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