Friction stir welding of magnesium alloy ZM21

Harikrishna, K. L.; Dilip, J. J. S.; Choudary, K.R.; Rao, V. V. Subba; Rao, S. R. Koteswara; Ram, G.D. Janaki; Sridhar, Narasi; Reddy, G. Madhusudhan

doi:10.1007/s12666-010-0123-9

Cited by 18 publications

(10 citation statements)

References 12 publications

(12 reference statements)

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“…Moreover, the elongation of the former is obviously decreased. The mechanical properties of several kinds of FSW Mg alloys [AZ31 (Yang et al, 2010;Xin et al, 2014;Ugender, 2018), AZ61 (Park et al, 2003b;Singh et al, 2018), ZK60 (Xie et al, 2008), ZM21 (Harikrishna et al, 2010), and Mg-Zn-Y-Zr (Xie et al, 2007)] were further summarized, as shown in Figure 4. It is seen that the YS and UTS of FSW Mg alloys are generally lower than that of BM.…”

Section: Properties and Deformation Mechanisms Of Fsw Mg Jointmentioning

confidence: 99%

Texture Related Inhomogeneous Deformation and Fracture Localization in Friction-Stir-Welded Magnesium Alloys: A Review

et al. 2020

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Friction stir welding (FSW) is a solid-state joining technique, which can avoid surface distortion and grain coarsening, and is very suitable for the joining of magnesium (Mg) alloys. However, a pronounced and inhomogeneous deformation texture was usually formed in the stir zone (SZ) of Mg welds. This has significant effect on the joint strength and fracture behavior of FSW Mg joints. In this review, microstructure and texture evolutions in weld zone (WZ) are analyzed based on the electron backscatter diffraction (EBSD) data. Schmid factor (SF) changes for slip and extension twinning were observed and discussed. The localized plastic deformation and fracture mechanisms of Mg welds are analyzed. In addition, some methods for improving the joint strength of FSW Mg welds are tested. Finally, the research direction of FSW Mg alloys in the future is determined.

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Section: Properties and Deformation Mechanisms Of Fsw Mg Jointmentioning

confidence: 99%

Texture Related Inhomogeneous Deformation and Fracture Localization in Friction-Stir-Welded Magnesium Alloys: A Review

et al. 2020

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“…These drawbacks are overcome by joining the Mg alloy plates through the Friction Stir Welding process (FSW). The cylindricalshouldered, normally non-consumable tool is allowed to travel along the contact line, and the rotation of the tool generates more heat due to the friction between the tool and the weld plates [37,38]. This heat is used to fabricate a grain refined and defect-free joint without reaching the melting point of the weld material.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and corrosion characteristics of micro-arc oxidized magnesium alloy (ZE41) friction stir welds in modified SBF

Sivashanmugam,

Harikrishna,

Rao

et al. 2023

Phys. Scr.

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Magnesium is a popularly known class of biodegradable metallic biomaterials, and it has spent most of its time in corrosion environments that must be validated before it can be used in real bio applications. This work studies the adaptability of rare earth magnesium alloy (Mg-RE) ZE41 welds for in vitro bio applications. Magnesium rare earth ZE41 alloy plates were welded through a friction stir joining process. The fabrication of a defect-free and strong friction stir butt joint was confirmed by microscopic analysis and mechanical tests. The joint efficiency of 79.25% was arrived from the tensile test based on ultimate tensile strength (UTS). The microhardness at WN, HAZ and base material were measured as 82, 63, and 70 respectively. A silicate electrolyte-based micro-arc oxidation (MAO) coating process was carried out on base and weld samples to study the corrosion behaviour of uncoated and coated samples in modified simulated body fluid (m-SBF). The average coating thickness of the samples was 40 µm. Then the processed samples were immersed in the m-SBF solution for 0.25 h, 72 h, and 168 h, and the degradation behaviour of all the samples was studied. The surface morphology and compositions were analysed through X-Ray diffraction and field emission scanning electron microscopy (FE-SEM) on all the MAO-coated and uncoated bases as well as weld samples. The electrochemical impedance spectroscopy (EIS) and potentiodynamic polarisation (PDP) tests were employed to evaluate the electro-chemical induced corrosion behaviour of the samples. The results revealed that MAO-coated ZE41 welded samples have better corrosion mitigation properties with a corrosion rate of 12.45 mpy after 168h of immersion than all other counterparts due to the compact oxide layer formation and further apatite mineral phase deposition that helps to delay the surface degradation of friction stir welded ZE41.

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“…It is a green metal and is considered to be the most environmentally friendly metal available for structural applications [5]. Despite being light in weight and having high specific strength, it has less ductility due to its HCP crystal structure [6,7].…”

Section: Introductionmentioning

confidence: 99%

Manufacturing and characterisation of magnesium composites reinforced by nanoparticles: A review

Monish¹,

KL²,

Rajkumar³

2023

Materials Science and Technology

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Magnesium metal matrix composites (Mg-MMC) are versatile materials notable for their utilisation in automotive, aerospace, and manufacturing sectors due to their superior mechanical properties and high specific strength. Nanoparticle reinforcements at varying concentrations are used to improve the mechanical and tribological properties of the Mg alloy. In this paper, the effects of varying nanoparticles (namely silicon carbide, carbon nanotubes, titanium nanoparticles, and tungsten carbide) on different Mg alloys are discussed along with relevant manufacturing processes. From the literatures, Mg-MMCs are fabricated from AZ91 alloy with silicon carbide nanoparticle reinforcement of 1 wt-% composition, manufactured using ultrasonic-assisted stirring, which showed the best relationship in overall material properties over other nanoparticle reinforcements.

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Friction stir welding of magnesium alloy ZM21

Cited by 18 publications

References 12 publications

Texture Related Inhomogeneous Deformation and Fracture Localization in Friction-Stir-Welded Magnesium Alloys: A Review

Texture Related Inhomogeneous Deformation and Fracture Localization in Friction-Stir-Welded Magnesium Alloys: A Review

Mechanical and corrosion characteristics of micro-arc oxidized magnesium alloy (ZE41) friction stir welds in modified SBF

Manufacturing and characterisation of magnesium composites reinforced by nanoparticles: A review

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