Superplastic Behaviour of Selected Magnesium Alloys

Experimental investigation of superplastic behaviour in magnesium alloys

Materials Science and Technology ◽

10.1179/mst.1997.13.10.825 ◽

1997 ◽

Vol 13 (10) ◽

pp. 825-831 ◽

Cited By ~ 102

Author(s):

M. Mabuchi ◽

T. Asahina ◽

H. Iwasaki ◽

K. Higashi

Keyword(s):

Experimental Investigation ◽

Magnesium Alloys ◽

Superplastic Behaviour

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Superplastic Forming of Friction Stir Processed Magnesium Alloys for Aeronautical Applications: A Modeling Approach

Materials Science Forum ◽

10.4028/www.scientific.net/msf.735.180 ◽

2012 ◽

Vol 735 ◽

pp. 180-191 ◽

Cited By ~ 5

Author(s):

Luigi Carrino ◽

Antonino Squillace ◽

Valentino Paradiso ◽

Stefano Ciliberto ◽

Mario Montuori

Keyword(s):

Magnesium Alloys ◽

Evolution Equations ◽

Superplastic Forming ◽

Transportation Industry ◽

Friction Stir ◽

Specific Strength ◽

Superplastic Behaviour ◽

Ultrafine Grained ◽

Structural Applications ◽

Strength And Stiffness

Magnesium alloys are attractive for lightweight structural applications in the transportation industry because of their low density and high specific strength and stiffness [1]. With an ultrafine-grained microstructure, they exhibit superplasticity at relatively low temperatures and high strain rates [2]. Friction stir processing (FSP) was used to obtain a microstructure with ultrafine grains in the magnesium alloy AZ31. Microstructures obtained using different rotational speeds are studied. Free bulge forming of the FS processed AZ31 sheets are carried out to evaluate the superplastic behaviour [3]. The model and the evolution equations are, then, implemented into a commercial FE code and different simulations are conducted to correlate the experimental and numerical results for the model validation [4]. The purpose of this study is to investigate the effect of the microstructure on the superplastic behaviour using free bulge forming and FE simulations.

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Effect of overageing temperature on the superplastic behaviour in magnesium alloys

Materials Science and Engineering A ◽

10.1016/j.msea.2006.03.152 ◽

2007 ◽

Vol 462 (1-2) ◽

pp. 144-148 ◽

Cited By ~ 10

Author(s):

V. Wesling ◽

T. Ryspaev ◽

A. Schram

Keyword(s):

Magnesium Alloys ◽

Superplastic Behaviour

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Determination of rare earth metals in magnesium alloys by atomic emission spectrometry with inductively coupled plasma

Izmeritel`naya Tekhnika ◽

10.32446/0368-1025it.2019-4-62-66 ◽

2019 ◽

pp. 62-66

Author(s):

R. M. Dvoretskov ◽

V. B. Baranovskaya ◽

F. N. Karachevtsev ◽

A. F. Letov

Keyword(s):

Rare Earth ◽

Magnesium Alloys ◽

Inductively Coupled Plasma ◽

Rare Earth Metals ◽

Atomic Emission ◽

Atomic Emission Spectrometry ◽

Emission Spectrometry ◽

Inductively Coupled

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

International Journal of Automotive and Mechanical Engineering ◽

10.15282/ijame.17.3.2020.08.0612 ◽

2020 ◽

Vol 17 (3) ◽

pp. 8150-8159

Author(s):

Kulwant Singh ◽

Gurbhinder Singh ◽

Harmeet Singh

Keyword(s):

Heat Treatment ◽

Friction Stir Welding ◽

Magnesium Alloys ◽

Mechanical Performance ◽

Fuel Efficiency ◽

Research Work ◽

Grain Structure ◽

Tensile Fracture ◽

Friction Stir ◽

The Impact

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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