Investigation on the Microstructure and Mechanical Properties of AZ91D Magnesium Alloy Plates Joined by Friction Stir Welding

Kadigithala, Nagabhushan Kumar; Vanitha, C.

doi:10.1007/978-981-15-1201-8_109

Cited by 5 publications

(2 citation statements)

References 28 publications

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“…5 In implementation of magnesium alloys in vehicles, many challenges have been reported by earlier researchers. [11][12][13] Welding prospect of Mg alloys has an imperative role in its widespread uses. 14 Friction stir welding is an appropriate means to join magnesium alloys.…”

Section: Introductionmentioning

confidence: 99%

Influence of post welding heat treatment on the microstructure and mechanical properties of friction stir welding joint of AZ31 Mg alloy

Singh

Singh²,

Singh

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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At present, magnesium alloys are extensively used in numerous applications due to their light weight and better characteristics. Welding of magnesium alloys is regarded as one of the most complex phenomena in various industries. The friction stir welding of magnesium alloys has encouraged abundant scientific and industrial interest as it has the potency to form a good quality joint. Post welding heat treatment is an appropriate process to further improve the properties or performance of FSW joints. Therefore, the present work aims to join AZ31 Mg alloy plates by friction stir welding, and microstructural and mechanical properties of the joint have been examined. Furthermore, the consequence of post welding heat treatment on the microstructure and mechanical properties of FSW joint has been evaluated. Tensile strength and elongation of FSW joint were about 145.4 ± 4.9 MPa and 9.5 ± 0.9%, respectively. It was found that post welding heat treatment was beneficial in homogenizing grains and to enhance mechanical properties. Tensile strength and elongation of the joint were improved by 4.74% and 15.78% respectively after PWHT. The highest microhardness of stir zone decreased about 6.84% (73 Hv to 68 Hv) after heat treatment and hardness pattern of weld became relatively smooth. Toughness of PWHT joint was 4.5 ± 0.17 Joules. The mode of tensile failure of as-welded and PWHT joint was ductile.

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Section: Introductionmentioning

confidence: 99%

Influence of post welding heat treatment on the microstructure and mechanical properties of friction stir welding joint of AZ31 Mg alloy

Singh

Singh²,

Singh

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…In this work, AZ91 magnesium alloys have chosen due to its better industrial importance. Earlier, Kadigithala and Vanitha [27], Lee et al [28], and Kouadri-Henni and Barrallier [29] have studied friction stir welded joint of AZ91D magnesium alloy and observed mechanical and microstructural modifications in the various zones of the weld joint whereas, Rouhi et al [30] and Sevvel and Jaiganesh [23] have reported the FSW joining of AZ91C Mg alloys. Some researchers including Patel et al [31], Zhang and Wan [32] and Nakata [33] also ABSTRACT -The weight reduction concept is most effective to reduce the emissions of greenhouse gases from vehicles, which also improves fuel efficiency.…”

Section: Introductionmentioning

confidence: 99%

Microstructural and Mechanical Behaviour Evaluation of Mg-Al-Zn Alloy Friction Stir Welded Joint

Singh¹,

Singh²,

Singh³

2020

IJAME

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The weight reduction concept is most effective to reduce the emissions of greenhouse gases from vehicles, which also improves fuel efficiency. Amongst lightweight materials, magnesium alloys are attractive to the automotive sector as a structural material. Welding feasibility of magnesium alloys acts as an influential role in its usage for lightweight prospects. Friction stir welding (FSW) is an appropriate technique as compared to other welding techniques to join magnesium alloys. Field of friction stir welding is emerging in the current scenario. The friction stir welding technique has been selected to weld AZ91 magnesium alloys in the current research work. The microstructure and mechanical characteristics of the produced FSW butt joints have been investigated. Further, the influence of post welding heat treatment (at 260 °C for 1 h) on these properties has also been examined. Post welding heat treatment (PWHT) resulted in the improvement of the grain structure of weld zones which affected the mechanical performance of the joints. After heat treatment, the tensile strength and elongation of the joint increased by 12.6 % and 31.9 % respectively. It is proven that after PWHT, the microhardness of the stir zone reduced and a comparatively smoothened microhardness profile of the FSW joint obtained. No considerable variation in the location of the tensile fracture was witnessed after PWHT. The results show that the impact toughness of the weld joints further decreases after post welding heat treatment.

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Optimization of Cutting Zone Temperature in Machining of Magnesium Alloy Using Taguchi Method

Saravanakumar¹,

Babu²,

Harikrishna³

et al. 2022

Lecture Notes in Mechanical Engineering

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Investigation on the Microstructure and Mechanical Properties of AZ91D Magnesium Alloy Plates Joined by Friction Stir Welding

Cited by 5 publications

References 28 publications

Influence of post welding heat treatment on the microstructure and mechanical properties of friction stir welding joint of AZ31 Mg alloy

Influence of post welding heat treatment on the microstructure and mechanical properties of friction stir welding joint of AZ31 Mg alloy

Microstructural and Mechanical Behaviour Evaluation of Mg-Al-Zn Alloy Friction Stir Welded Joint

Optimization of Cutting Zone Temperature in Machining of Magnesium Alloy Using Taguchi Method

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