Research progress of residual stress determination in magnesium alloys

Yuan, Xiaomin; Zhang, Jin; Lian, Yong; Du, Chang; Xu, Weisheng; Zhao, Yunhao; Mo, Jiahao

doi:10.1016/j.jma.2018.06.002

Cited by 29 publications

(9 citation statements)

References 44 publications

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“…After PMF treatment, the residual stress along RD and TD at positions (− 15,0), (0,0), and (15,0) was measured again by X-ray diffraction (XRD) with Co anode and a beam diameter of 1.5 mm. Then the residual stress was calculated by the sin 2 ψ method [26] under the assumption of biaxial stress state according to Eq. (1):…”

Section: Methodsmentioning

confidence: 99%

Effect of Pulsed Magnetic Field on the Residual Stress of Rolled Magnium Alloy AZ31 Sheet

Meng

Luo

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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A novel method of pulsed magnetic field (PMF) treatment was developed to eliminate the residual stress of rolled magnesium alloy AZ31 sheet in this study. The effect of PMF on residual stress of rolled AZ31 sheet was investigated and its mechanism was analyzed. The experimental results revealed that the pulse frequency had a significant impact on residual stress. After 10.0 Hz PMF treatment, the average and maximum reduction rates of residual stress along the rolled direction were 26.6% and 30.3%, respectively. It was found that the dislocation density and parallel dislocation in grains of the rolled sheet increased after it was treated by the pulsed magnetic field. The simulation results showed that the Lorentz force generated by the pulsed magnetic field can lead to basal slip, thereby resulting in local plastic deformation. Besides, the Joule heat produced during the PMF treatment was conducive to the elimination of residual stress.

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Section: Methodsmentioning

confidence: 99%

Effect of Pulsed Magnetic Field on the Residual Stress of Rolled Magnium Alloy AZ31 Sheet

Meng

Luo

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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“…In the equal channel extrusion zone, the slopes of rising for extrusion forces are different due to the in uences of the angles. When the channel angle is smaller, the slope of the extrusion force increase is larger, and the nal stable extrusion force is larger [14][15][16][17][18][19][20].…”

Section: Effects Of Different Channel Angles On Extrusion Forcesmentioning

confidence: 99%

A Special Extrusion-shear Manufacturing Method for Magnesium Alloy Rods Based on Finite Element Numerical Simulation and Experimental Verification

Zhang

Huang

Zhang

et al. 2022

Preprint

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To research the influences of process parameters on a special extrusion-shearmanufacture method for magnesium alloy rods, deform-3d software with finite elementsimulations has been used to analyze the material flows of deformed magnesium alloysAZ31B during the extrusion-shear (ES) process, as well as the grain sizes anddistribution of extrusion loads, stresses and strains, and blank temperatures. Temperaturefields, stress fields, strain fields and temperature fields varying with different blankpreheating temperatures, extrusion speed and extrusion ratios were simulated. Influences ofdifferent extrusion conditions and different die structures on microstructures of rods prepared by ES process has been researched. Extrusion forces decrease with the increasing extrusion temperatures, decreasing extrusion ratios, increasing die channel angles and decreasing friction coefficients. The flow velocities of metal in the ES die increase with development of ES process. Increasing the channel angles and reducing the friction factors would increase the outflow velocities of metal, but it has little effect on the uniformity of metal flow. The increase in friction and extrusion speed would increase the temperatures of the ES die. The ES process can prepare finer and more uniform microstructures than those prepared by direct extrusion under the same conditions.

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“…During the TEB process, temperature eld is affected by many parameters which include initial billet temperatures, TEB speeds, extrusion ratios, and friction coe cients between the billet/die.Even the extrusion of simple rods is a complex process involving highly inhomogeneous deformation and high strain rates. The heat generated by the plastic deformation and friction would increase the temperatures of the tubes signi cantly, and in turn affect the microstructures and mechanical properties.Because TEB process is a non-linear process involving high inhomogeneous deformation and high strain rates, it is di cult to predict the temperatures of billet accurately [18][19] .…”

Section: Temperature Evolutionmentioning

confidence: 99%

Thin-Walled Tube Made of AZ31 Magnesium Alloy Fabricated by New Compound Extrusion Including Direct Extrusion and Multi-pass Bending

lin

Huang

Zhang

et al. 2021

Preprint

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A new severe plastic deformation for manufacturing thin-walled tube made of AZ31 magnesium alloy called TEB(Tube-Extrusion-Bending ) process, which combines direct extrusion with two step bending,has been developed to manufacture tube.The TEB process has been researched by using finite element modeling (FEM) method. The rules of extrusion temperatures and the extrusion forces varying with process parameters have been developed. A TEB process with installed containers and dies has been constructed to perform tests in order to validate the FEM model with different process conditions. And the microstructures evolution have been researched based on effective strains evolution. The results showed that refined and uniform microstructures can be achieved by TEB process. The research results showed that the TEB process would produce the serve plastic deformation and improve the recrystallization of the grains.The comparisons of FEM simulation and experimental results have been made to obtain the relative important principles of TEB process.

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Research progress of residual stress determination in magnesium alloys

Cited by 29 publications

References 44 publications

Effect of Pulsed Magnetic Field on the Residual Stress of Rolled Magnium Alloy AZ31 Sheet

Effect of Pulsed Magnetic Field on the Residual Stress of Rolled Magnium Alloy AZ31 Sheet

A Special Extrusion-shear Manufacturing Method for Magnesium Alloy Rods Based on Finite Element Numerical Simulation and Experimental Verification

Thin-Walled Tube Made of AZ31 Magnesium Alloy Fabricated by New Compound Extrusion Including Direct Extrusion and Multi-pass Bending

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