Joining of AZ31 and AZ91 Mg alloys by friction stir welding

Sunil, B. Ratna; Reddy, G. Pradeep Kumar; Mounika, A.S.N.; Sree, P. Navya; Pinneswari, P. Rama; Ambica, I.; Babu, Ramesh; Amarnadh, P.

doi:10.1016/j.jma.2015.10.002

Cited by 62 publications

(25 citation statements)

References 6 publications

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“…In welding process parameters, the optimized values reported by Ratna Sunil et al. 12 for welding the dissimilar magnesium alloys were selected, that is, the tool transverse feed rate and speed were kept 25 mm/min and 1400 r/min, respectively. In the weld joint, AZ31 Mg alloy was kept toward the advancing side and AZ61 Mg alloy toward the retreating side.…”

Section: Methodsmentioning

confidence: 99%

“…11 The reactive and fire-causing nature of magnesium alloys makes it hard to weld these alloys. 12–14 Moreover, there are some limitations in the use of magnesium alloys because of its hexagonal crystal structure and technology concern. 4,15 Besides the invention of a new grade of alloys, the joining techniques have also explored the various applications of magnesium alloys.…”

Section: Introductionmentioning

confidence: 99%

“…2,32–34 FSW is an emerging welding process capable to join the similar as well as dissimilar materials. 12,35–40 Many researchers have been reported about the joining of magnesium alloys by FSW in the literature, but most of the earlier researches on FSW of magnesium alloys are the welding of similar material. In concern of dissimilar joining, Liu et al.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on the microstructure and mechanical properties of a dissimilar friction stir welded joint of magnesium alloys

Singh

2019

Proceedings of the IMechE

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In the current scenario, the light-weighting concept is the most important strategy to decrease fuel consumption as well as emissions of greenhouse gases. Magnesium alloys are attractive to various industries including transportation industry for their inherent light-weight. The friction stir welding is proficient to join magnesium alloys. In this article, a dissimilar friction stir welding butt joint between AZ31 and AZ61 magnesium alloys was fabricated, and microstructure and mechanical properties have been examined. The tool rotation speed of 1400 r/min and tool transverse feed rate of 25 mm/min was found quite suitable to fabricate a perfect joint of these dissimilar magnesium alloys. The stir zone was composed of fine and equiaxed grains and showed the highest microhardness value. In the advancing side, heat affected zone was composed of both equiaxed and elongated grains; however, in the retreating side, heat affected zone has relatively smooth grains. The tensile strength of the joint was about 138.37 ± 6.6 MPa. The efficiency of the joint was 51.25% with respect to AZ61 Mg alloy. The average impact toughness of friction stir welding joint was deteriorated by 16.67% and 28.5% with respect to base materials AZ31 and AZ61, respectively.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation on the microstructure and mechanical properties of a dissimilar friction stir welded joint of magnesium alloys

Singh

2019

Proceedings of the IMechE

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“…It should be stated that the data are mainly about friction stir butt welding Mg alloys. It is found that the joints usually show a lower tensile strength than that of the BMs, especially for wrought Mg alloys [27,[37][38][39][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57]. Table 1 presents that yield strength (YS) of the joints is only 40-80% of BM.…”

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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“…Many researchers have studied weld defects and their classification [1,2,3,4,5,6,7,8]. Welding speed is one of the most important processing parameters during the FSW process, and the heat input generated has been reported to have a significant influence on the welding process [9,10,11,12,13]. The quality of FSW depends on the speed of the rotating welding tool as the source of input heat in the process.…”

Section: Introductionmentioning

confidence: 99%

Detection of Friction Stir Welding Defects of AA1060 Aluminum Alloy Using Specific Damping Capacity

AbuShanab

Moustafa

2018

Materials

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The demand for nondestructive testing has increased, especially in welding testing. In the current study, AA1060 aluminum plates were jointed using the friction stir welding (FSW) process. The fabricated joints were subjected to free vibration impact testing in order to investigate the dynamic properties of the welded joint. Damping capacity and dynamic modulus were used in the new prediction method to detect FSW defects. The data acquired were processed and analyzed using a dynamic pulse analyzer lab shop and ME’Scope’s post-processing software, respectively. A finite element analysis using ANSYS software was conducted on different types of designed defects to predict the natural frequency. The results revealed that defective welded joints significantly affect the specific damping capacity. As the damping ratio increased, so did the indication of opportunities to increase the presence of defects. The finite element simulation model was consistent with experimental work. It was therefore revealed that natural frequency was insufficient to predict smaller defects.

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Joining of AZ31 and AZ91 Mg alloys by friction stir welding

Cited by 62 publications

References 6 publications

Investigation on the microstructure and mechanical properties of a dissimilar friction stir welded joint of magnesium alloys

Investigation on the microstructure and mechanical properties of a dissimilar friction stir welded joint of magnesium alloys

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

Detection of Friction Stir Welding Defects of AA1060 Aluminum Alloy Using Specific Damping Capacity

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