Friction stir processing of commercial AZ31 magnesium alloy

Darras, Basil M.; Khraisheh, Marwan; Abu-Farha, Fadi; Omar, Mohammed

doi:10.1016/j.jmatprotec.2007.03.045

Cited by 216 publications

(131 citation statements)

References 11 publications

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“…The tool is then traversed in the welding direction. The soften material caused by the rotating shoulder generate heat, the material under the processed zone exposes intense plastic deformation and dynamically recrystallized fine grain structure (Darras et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Friction Stir Welding of AZ31 Magnesium Alloys - A Numerical and Experimental Study

Serіndağ

Kıral

2017

Lat. Am. j. solids struct.

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In this paper, weldability of magnesium alloys by friction stir welding (FSW) method which is difficult to join by the fusion welding have been investigated experimentally and numerically. To this end, the connection of magnesium alloys was performed using different welding parameters. AZ31 Mg-alloy plates were friction stir welded at rotation speed of 1200 rev/min and translational speeds of 80,100,120,140 mm/min. Temperature evolution in the weld zone during welding was measured by using embedded K-type thermocouples. The temperature measurements on both advancing and retreading sides were performed by ten thermocouples. Tensile and Vickers hardness tests were conducted to evaluate the mechanical properties and the hardness distribution on the weld, respectively. During FSW, heat is generated by the friction and plastic deformation. Knowledge of the temperature distribution is requisite since mechanical properties and microstructure are substantially affected by the heat generation. It was observed that the heat generated during the FSW process was increasing and the grain structure was refined as the translational speed was decreasing. In the finite element analyses, modeling of the FSW process were carried out by ANSYS software to determine the temperature and stress distributions in the welded joint during FSW. An APDL (ANSYS Parametric Design Language) code was developed to simulate FSW process. Transient nonlinear finite element analyses were performed at two stages which the first step is thermal analysis which heat transfer from the pin and shoulder to the plates was modeled and the second is the structural analysis which the temperature data obtained from the thermal analysis in the first stage is used.

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Section: Introductionmentioning

confidence: 99%

Friction Stir Welding of AZ31 Magnesium Alloys - A Numerical and Experimental Study

Serіndağ

Kıral

2017

Lat. Am. j. solids struct.

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“…This is one of major advantages of friction stir processing, because it allows finishing the surface and, in the meantime, it applies in-situ localized heat treatment leading to microstructural refinement, densification, homogeneity, increased microhardness, superior wear and corrosion resistance of the surface layer. Friction stir was initially applied to aluminium alloys [1] and extended lately to other materials such as copper alloys [4,5], magnesium alloys [6,7], steels [8,9] or titanium alloys [10,11].…”

Section: Introductionmentioning

confidence: 99%

Influence of friction stir process parameters on surface quality of aluminum alloy A2017

et al. 2017

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“…[16,17] Recently, research into FSP magnesium-based alloys has demonstrated that effective microstructural homogenization and refinement can be achieved as a result of severe plastic deformation and dynamic recrystallization. [3,4,[18][19][20][21][22][23][24] Our previous work has indicated that two-pass FSP combined with subsequent aging is a simple and effective approach to enhance the mechanical properties of AZ91D casting. [18] Furthermore, a preliminary comparative study indicated that single-pass FSP on AZ91D casting produced a heterogonous microstructure with low strength and ductility; however, a pre-solution treatment (pre-ST) prior to FSP resulted in improved microstructural uniformity and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of Friction Stir Processing Procedures on Microstructure and Mechanical Properties of Mg-Al-Zn Casting

Feng

Xiao²,

Y.³

et al. 2009

Metall Mater Trans A

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Cast Mg-Al-Zn (AZ80) alloy was subjected to friction stir processing (FSP) with three different FSP procedures: single pass, single pass with a pre-solution treatment (pre-ST), and two pass. FSP resulted in remarkable grain refinement, significant breakup, and dissolution of the coarse, networklike Mg 17 Al 12 phase. While the single-pass FSP procedure produced a heterogeneous microstructure with Mg 17 Al 12 particle-rich bands, both the pre-ST FSP and the two-pass FSP procedures resulted in the generation of a uniform microstructure. The pre-ST FSP and twopass FSP samples exhibited significantly enhanced strength and ductility due to remarkable grain refinement and dissolution of coarse Mg 17 Al 12 phase. A post-FSP aging resulted in the precipitation of fine Mg 17 Al 12 particle, thereby increasing the strength of the FSP samples. Among three FSP samples, the aged two-pass FSP sample exhibited the highest ultimate tensile strength (UTS) of 356 MPa and an elongation of 17 pct.

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Friction stir processing of commercial AZ31 magnesium alloy

Cited by 216 publications

References 11 publications

Friction Stir Welding of AZ31 Magnesium Alloys - A Numerical and Experimental Study

Friction Stir Welding of AZ31 Magnesium Alloys - A Numerical and Experimental Study

Influence of friction stir process parameters on surface quality of aluminum alloy A2017

Effect of Friction Stir Processing Procedures on Microstructure and Mechanical Properties of Mg-Al-Zn Casting

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