Microstructure and mechanical properties of friction stir welded dissimilar Mg alloys of ZK60–AZ31

Liu, Dejia; Xin, Renlong; Zheng, Xin; Zhou, Zheng; Qing, Liu

doi:10.1016/j.msea.2012.10.052

Cited by 71 publications

(39 citation statements)

References 36 publications

(81 reference statements)

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“…The grains between the SZ side and the SZ centre are oriented with the c axis inclined *55u to the TD. In a previous study, Park et al 15 have found that (0002) basal plane in SZ roughly surrounds the pin column surface of weld tool, which is consistent with the present result. In addition, the texture evolution in CZ presents a similar trend with that in SZ.…”

Section: Microstructure and Texture Evolutionsupporting

confidence: 93%

“…It is considered that dislocation density is roughly uniform throughout a weld. 15 The larger amount of second phase particles and smaller grains in SZ may lead to higher YS for the mid sample. However, the grains in the CZ side are in relatively hard orientation for extension twinning, which may cause an improvement of YS for the up sample.…”

Section: Microstructure and Texture Evolutionmentioning

confidence: 99%

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Microstructural investigation and mechanical properties of dissimilar friction stir welded magnesium alloys

Liu

et al. 2015

Science and Technology of Welding and Joining

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Dissimilar joints of magnesium alloys were obtained by friction stir welding. Detailed microstructure and texture examinations were performed on the joints. Significant difference in microtexture distribution and microstructural features is observed between crown and stir zones in the dissimilar joints. However, an overall effect of these factors on mechanical properties of layered joints is not obvious as both the up and middle samples present quite similar yield strength and strain hardening behaviour. Moreover, both samples fracture in the Mg-3Al-1Zn alloy side. The fracture of the middle sample starts at the boundary of transition and stir zones, while the up sample starts in the crown zone side.

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Section: Microstructure and Texture Evolutionsupporting

confidence: 93%

Section: Microstructure and Texture Evolutionmentioning

confidence: 99%

Microstructural investigation and mechanical properties of dissimilar friction stir welded magnesium alloys

Liu

et al. 2015

Science and Technology of Welding and Joining

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“…In addition, precipitates would be diffuse and uniformly distributed in WZ. For example, precipitates in the cast and aged ZK60 alloy are segregated along grain boundaries in base metal (BM) and are broken up and changed into a uniform distribution after FSW [42,43]. Therefore, regardless of grain size or precipitates, the mechanical properties of Mg alloys would be enhanced by FSW.…”

Section: A Brief Review Of Microstructure and Mechanical Properties Omentioning

confidence: 99%

Analysis of Weak Zones in Friction Stir Welded Magnesium Alloys from the Viewpoint of Local Texture: A Short Review

Liu

Tang

Shen

et al. 2018

Metals

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Friction stir welding (FSW) is a promising approach for the joining of magnesium alloys. Although many Mg alloys have been successfully joined by FSW, it is far from industrial applications due to the texture variation and low mechanical properties. This short review deals with the fundamental understanding of weak zones from the viewpoint of texture analysis in FSW Mg alloys, especially for butt welding. Firstly, a brief review of the microstructure and mechanical properties of FSW Mg alloys is presented. Secondly, microstructure and texture evolutions in weak zones are analyzed and discussed based on electron backscatter diffraction data and Schmid factors. Then, how to change the texture and strengthen the weak zones is also presented. Finally, the review concludes with some future challenges and research directions related to the texture in FSW Mg alloys. The purpose of the paper is to provide a basic understanding on the location of weak zones as well as the weak factors related to texture to improve the mechanical properties and promote the industrial applications of FSW Mg alloys.

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“…The diameter of the tool shoulder is 15 mm and the traveling speed and rotation speed of the tool are 90 mm/min and 800 rpm, respectively. A recent study indicated that the sampling design for tensile tests have strong influence on the strength and fracture behavior of FSW Mg alloys [14,15] , so crown zone (CZ) was excluded in all the tensile samples to simplify the studies of structure-property relations. Optical microscope (OM), electron backscatter diffraction (EBSD, Oxford Instruments equipped in FEI Nova 400) techniques were used to characterize the microstructure and texture of the specimens.…”

Section: Methodsmentioning

confidence: 99%

Effect of microtexture distribution on inhomogeneous deformation and fracture of friction-stir-processed magnesium alloys

Xin

Liu

et al. 2013

Proceedings of the 1st International Joint Symposium on Joining and Welding

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Microstructure and mechanical properties of friction stir welded dissimilar Mg alloys of ZK60–AZ31

Cited by 71 publications

References 36 publications

Microstructural investigation and mechanical properties of dissimilar friction stir welded magnesium alloys

Microstructural investigation and mechanical properties of dissimilar friction stir welded magnesium alloys

Analysis of Weak Zones in Friction Stir Welded Magnesium Alloys from the Viewpoint of Local Texture: A Short Review

Effect of microtexture distribution on inhomogeneous deformation and fracture of friction-stir-processed magnesium alloys

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