Effect of Tungsten Inert Gas Welding Parameters on Hot Crack Sensitivity of Cast Magnesium Alloy

Chen, Yi; Fan, Chenglei; Lin, Sanbao; Yang, Chunli

doi:10.1007/s11665-022-07192-7

Cited by 8 publications

(2 citation statements)

References 27 publications

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“…On the other hand, as depicted in Figure 5, the grain size gradually increased during the solidification process of magnesium alloy, leading to a reduction in the mobility of the liquid metal of a low-melting-point eutectic, and the liquid metal took the form of a thin film at the grain boundaries during the final stage of solidification. Due to the large linear thermal expansion coefficient of magnesium alloys [32], a significant distortion of the solidified alloy induced by solidification shrinkage occurred, and the liquid film fractured under tensile stress [33]. Therefore, the cracks initiated at pores and propagated along the grain boundaries, as shown in Figure 4.…”

Section: Macrostructurementioning

confidence: 99%

AZ91 Magnesium Alloy CMT Cladding Layer Processed Using Friction Stir Processing: Effect of Traverse Speed on Microstructure and Mechanical Properties

Zhao,

Shen,

et al. 2024

Materials

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Friction stir processing (FSP) is a solid-state treating method to enhance the mechanical properties of materials by altering their microstructure. In this study, FSP was applied to the AZ91 magnesium alloy cladding layer prepared using cold metal transition (CMT) technology, and the purpose was to investigate the effect of the traverse speed of the H13 steel stirring head under a constant rotation speed on the microstructure and mechanical properties of the cladding layer. The results demonstrated that FSP could effectively decrease the grain size of the cladding layer and lead to the dispersion and dissolution of the coarse β-Mg17Al12 second phase into the α-Mg matrix. The mechanical characteristics of the processed cladding layer were significantly enhanced compared to the unprocessed cladding layer due to the grain refinement and second-phase strengthening induced by FSP. When the stirring head rotation speed was set at 300 r/min, the average microhardness and tensile properties of the specimens showed a tendency of initially increasing and then dropping as the traverse speed increased. The cladding layer, obtained at a traverse speed of 60 mm/min, displayed optimal mechanical properties with an average microhardness, tensile strength, and elongation of 85.6 HV0.1, 278.5 MPa, and 13.4%, respectively.

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Section: Macrostructurementioning

confidence: 99%

AZ91 Magnesium Alloy CMT Cladding Layer Processed Using Friction Stir Processing: Effect of Traverse Speed on Microstructure and Mechanical Properties

Zhao,

Shen,

et al. 2024

Materials

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show abstract

“…In addition to this, dimension relevant sensitivity analysis of 2 stretchable spherical relevant source was carried out in this investigation. From a detailed literature survey [19][20][21][22][23], it could be understood that experimental investigations carried out on several fusion relevant welding methodologies, employing the sensitivity relevant analysis are limited. For example, Kim et al [20] in their experimental work, employed sensitivity based analysis to identify and compare the individual impacts of the employed attributes of the automated gas metal arc joining process, on the geometry of employed bead, so as to validate the measurement related flaws on the uncertainty values w.r. t anticipated parameters.…”

Section: Introductionmentioning

confidence: 99%

Analysis of sensitivity and formulation of empirical relationship between parameters of FSW process and tensile strength of AZ80A Mg alloy joints

Gunasekaran,

Sevvel,

Vasanthe Roy

et al. 2023

Mater. Res. Express

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In this research paper, an endeavour was made to devise empirical relations amidst the process parameters of friction stir welding (FSW) and tensile relevant strength of AZ80A Mg alloy joints, based on a 6 parameters – 5 levels based central composite design (CCD). Mathematical equations illustrating the impact of process parameters of FSW were formulated based on quadratic regression based analysis to optimize the parameters for attaining superior tensile strength and sensitivity related equations were established from these numerical models. A detailed sensitivity characteristic relevant map for the FSW of AZ80A Mg alloys was established forecasting the fine tuning related prerequisites of the employed FSW parameters. Coefficient of determinant (R2) announced that 99.062% of the overall variability was described by the formulated model and only lower than 1% of the overall variations was not justified by the model. Predicted R2 was also in perfect agreement with the adjusted R2 and announced the model’s capability to demonstrate 95.43% of the variability in the generated data. Highest value of tensile relevant strength (80.77% of the parent metal) was exhibited by the AZ80A Mg alloy joint fabricated under optimized parameters. Tensile relevant strength of AZ80A Mg joints was observed to be highly sensitive to traverse speed of the employed tool.

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Effect of assembling clearance on welding characteristics of laser-MIG hybrid welding for aluminum alloy extrusions

Yang,

Du,

Wang

2023

Int J Adv Manuf Technol

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Effect of Tungsten Inert Gas Welding Parameters on Hot Crack Sensitivity of Cast Magnesium Alloy

Cited by 8 publications

References 27 publications

AZ91 Magnesium Alloy CMT Cladding Layer Processed Using Friction Stir Processing: Effect of Traverse Speed on Microstructure and Mechanical Properties

AZ91 Magnesium Alloy CMT Cladding Layer Processed Using Friction Stir Processing: Effect of Traverse Speed on Microstructure and Mechanical Properties

Analysis of sensitivity and formulation of empirical relationship between parameters of FSW process and tensile strength of AZ80A Mg alloy joints

Effect of assembling clearance on welding characteristics of laser-MIG hybrid welding for aluminum alloy extrusions

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