Microstructure, mechanical properties and deformation mechanism of powder metallurgy AZ31 magnesium alloy during rolling

Wang, Tao; Yang, Lun; Tang, Zhaofeng; Wu, Lei; Yan, Huanyuan; Liu, Chao; Ma, Yunzhu; Liu, Wensheng; Yu, Zhaoji

doi:10.1016/j.msea.2022.143042

Cited by 19 publications

(4 citation statements)

References 35 publications

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“…Comparing the graphs, it can be seen that the width of the rolled groove increases from 765 to 1205 μm sequentially as the static force increases. Figure 9f shows the comparison between the depth of the rolling groove measured experimentally and the theoretical analysis by Equation (6). From the graph it can be seen that the trend of the two was consistent, the rolling grooves' depth increased with the static force increasing.…”

Section: Residual Stress Distributionmentioning

confidence: 76%

“…The high-speed mediums impact the workpieces, forming a plastic deformation layer and leaving pits on the surface [3][4][5]. Mechanical rolling can significantly improve the mechanical properties of specimens, such as the surface hardness, residual compressive stress, and strength and toughness while producing compressive residual stress in the external surface [6]. These processes can improve the surface properties of the specimens and increase their fatigue life to some extent, but their surface performance needs to be improved since the energy density of these processes is not concentrated enough [7,8].…”

Section: Introductionmentioning

confidence: 99%

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Exploration of Key Process Parameters and Properties of 40Cr Steel in Ultrasonic Surface Rolling Process

Cheng

et al. 2022

Coatings

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Ultrasonic surface rolling (USRP) is an effective process to improve a workpiece’s fatigue property, in which ultrasonic vibration and static force are applied on the workpiece’s surface. In order to clarify the ultrasonic rolling strengthening mechanism of critical components and optimize the USRP parameters, a theoretical model of ultrasonic rolling was established. Based on the stress-strain curve of 40Cr steel, the USRP parameters were formulated. The compressive residual stress field of single point impact was analyzed by finite element simulation, and the simulation results were validated by conducting an experimental research. In addition, the changes in the surface properties of specimens under different USRP parameters were studied experimentally. The results show that with the increase in depth, the compressive residual stress on the external surface increases firstly and then decreases, and the maximum compressive residual stress is −338 MPa. As the amplitude is 12 μm and the frequency is 20 kHz, the static force of 600 N is optimal for the ultrasonic rolling of 40Cr steel. This study could provide a guide for the key parameters’ selection in USRP.

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Section: Residual Stress Distributionmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Exploration of Key Process Parameters and Properties of 40Cr Steel in Ultrasonic Surface Rolling Process

Cheng

et al. 2022

Coatings

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“…Finally, the prepared samples undergo the sintering process in an argon gas environment within a sintering furnace. The sintering is carried out for a duration of 2 h at a temperature of 535 °C 21 , 35 .…”

Section: Methodsmentioning

confidence: 99%

Characterisation of AZ31 metal matrix composites reinforced with carbon nanotubes

Mukunda,

Boppana,

Palani

et al. 2023

Sci Rep

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The focus of this study revolves around the synthesis of AZ31 metal matrix composites (MMCs) reinforced with carbon nanotubes (CNTs) using the powder metallurgy technique. Various compositions of CNTs were incorporated into the AZ31 alloy matrix. The sintered specimens were analysed using microstructural characterization and Fourier transform infrared (FTIR) spectroscopy. Furthermore, differential scanning calorimetry (DSC) were conducted to investigate the impact of sintering on the processed composites. Corrosion studies were performed in a sodium chloride (NaCl) medium, and Tafel curves were plotted to assess corrosion behaviour. It was observed that composites enriched with 0.5 wt.% CNTs demonstrated the highest level of corrosion resistance among the synthesized AZ31 metal specimens.

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“…For example, in powder metallurgy rolling studied by Wang et al [28], the tensile strength of the AZ31 magnesium alloy sheet was significantly increased, from 244.37 MPa to 296.56 MPa, but the elongation was significantly decreased, However, conventional production methods cannot simultaneously improve the strength and toughness. For example, in powder metallurgy rolling studied by Wang et al [28], the tensile strength of the AZ31 magnesium alloy sheet was significantly increased, from 244.37 MPa to 296.56 MPa, but the elongation was significantly decreased, from 22.97% to 12.22%. Vignesh et al's [29] study on cross rolling only obtained sheets with the maximum tensile strength and optimal elongation of 254 MPa and 6%, respectively.…”

Section: Analysis Of Mechanical Propertiesmentioning

confidence: 99%

Effect of Cryogenic Time on Microstructure and Properties of TRCed AZ31 Magnesium Alloy Sheets Rolled during Cryogenic Rolling

Zhi

Pei-jin

Huang

et al. 2023

Metals

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Rolling experiments of TRCed AZ31 magnesium alloy with different cryogenic treatment time were carried out to study the evolution mechanism of its microstructure and mechanical properties. The experimental results showed that with the increase in cryogenic time, the grain size of the sheets after cryogenic rolling was significantly refined, and the dislocation density and texture strength were greatly weakened. The combined effect led to a significant increase in the elongation and tensile strength of the sheet after cryogenic rolling. The tensile strength, elongation and average hardness of the sheet increased from 282.6 MPa, 8.2%, and 54.6 HV to 305.4 MPa, 16.3%, and 62.8 HV, respectively. Therefore, when the cryogenic treatment time was 60 s, the performance of the rolled sheet was the best. At the same time, the appearance of dimples after cryogenic rolling led to a change of the fracture mechanism, which was also the key to the improvement of the sheet elongation.

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Microstructure, mechanical properties and deformation mechanism of powder metallurgy AZ31 magnesium alloy during rolling

Cited by 19 publications

References 35 publications

Exploration of Key Process Parameters and Properties of 40Cr Steel in Ultrasonic Surface Rolling Process

Exploration of Key Process Parameters and Properties of 40Cr Steel in Ultrasonic Surface Rolling Process

Characterisation of AZ31 metal matrix composites reinforced with carbon nanotubes

Effect of Cryogenic Time on Microstructure and Properties of TRCed AZ31 Magnesium Alloy Sheets Rolled during Cryogenic Rolling

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