Wear behavior of HPT processed UFG AZ31B magnesium alloy

Seenuvasaperumal, P.; Doi, Kotaro; Basha, Dudekula Althaf; Singh, Alok; Elayaperumal, A.; Tsuchiya, Koichi

doi:10.1016/j.matlet.2018.05.076

Cited by 29 publications

(5 citation statements)

References 14 publications

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“…The friction between the friction ball and the hard particles or hard protrusions on the surface of alloys causes the loss of materials, that is, abrasive wear. Each abrasive particle can be considered as continuous debris cut off from the material surface, leaving a furrow on the surface [36], which is shown in Figure 10a. The reason for the delamination wear is that in the process of friction and wear of alloys, partial plastic deformation occurs on the surface when the friction test steel ball is welded to the surface of the magnesium alloy, and further sliding leads to the spalling of the worn surface and the formation of spalling pits [37], as shown in Figure 10b.…”

Section: Discussionmentioning

confidence: 99%

Effects of Gd/Nd Ratio and Aging Treatment on Wear Behavior of Mg-Nd-Gd-Sr-Zn-Zr Alloys

Wang,

Jia

2023

Coatings

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The Mg-(4-x)Nd-xGd-0.3Sr-0.2Zn-0.4Zr (x = 0, 1, 2, and 3 wt%, Gd/Nd = 0, 1/3, 1, and 3) alloys were hot extruded and then aged (T5). The friction and wear properties of the as-extruded and as-aged alloys were studied using a ball-on-disk wear testing machine and a scanning electron microscope to reveal the impacts of the Gd/Nd ratio and aging treatment. The results show that the friction coefficient of the as-extruded alloys increases first and then decreases with increasing Gd/Nd ratio. After aging, the friction coefficient of the alloys decreases slightly. The Gd/Nd ratio has no significant effect on the wear rate of the as-extruded alloys, and the wear rate decreases first and then increases with the increase in the Gd/Nd ratio for the as-aged alloys. The T5 alloy with a Gd/Nd ratio of 1/3 has the best wear resistance. The wear mechanisms of alloys mainly include abrasive wear, oxidation wear, and delamination wear.

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Section: Discussionmentioning

confidence: 99%

Effects of Gd/Nd Ratio and Aging Treatment on Wear Behavior of Mg-Nd-Gd-Sr-Zn-Zr Alloys

Wang,

Jia

2023

Coatings

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“…shows the SEM micrographs of worn surfaces of annealed and ECAPed samples. Numerous studies 19,23,[54][55][56][57][58][59][60][61][62] have classified the various wear mechanisms in magnesium alloys into two basic categories of wear regimes namely, mild and severe wear regimes, based on the wear test parameters, that is, applied load and sliding velocity. In the mild wear regime exists two subregimes denoted by oxidation wear and delamination wear regime.…”

Section: Wear Studymentioning

confidence: 99%

Mechanical and wear behavior of room-temperature ECAPed Mg-4Li alloy

Ahirwar

Ravisankar

Babu

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The excellent specific strength of magnesium and its alloys makes them appealing for use in many engineering applications especially in the transportation industry. However, its use is restricted due to poor formability and wear resistance. Li addition enhances the formability of magnesium alloys while diminishing their strength. Equal channel angular pressing (ECAP) is one of the effective severe plastic deformation (SPD) methods that improves the strength by grain refinement thereby wear resistance. In this study, the effect of ECAP on the mechanical and wear behavior of Mg-4Li alloy is studied and correlated with grain refinement and microstructural features. The substantial grain refinement was obtained after three passes of ECAP and the sample was processed in the route BC displayed a minimum grain size of ∼9 µm. The ECAPed samples showed improved hardness and tensile properties and the sample ECAPed in the route BC displayed superior mechanical properties owing to its more refined microstructure. The microstructural features are analyzed using X-ray diffraction line profile analysis (XRDLPA) and correlated with the mechanical properties. The wear behavior viz. wear rate, coefficient of friction (COF) and roughness were investigated. It was demonstrated that the wear properties are improved after ECAP due to the refined microstructure and enhanced hardness and the obtained wear results are in good agreement with Archard’s wear law.

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“…At the same time, dynamic recrystallization is needed to form high-angle grain boundaries after several ECAP passes and, therefore, preheating is necessary. It is also known that SPD served to enhance the wear resistance of commercially pure titanium [29], titanium alloy Ti6Al4V [30,31] and magnesium alloys AZ31B [32], AZ91 [33], Mg-2 wt%Y-0.6 wt%Nd-0.6 wt%Zr [34] and Mg-4Li [35].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Ultrafine-Grained (UFG) Structure Formed by Equal-Channel Angular Pressing in AA7075 on Wear and Friction in Sliding against Steel and Ceramic Counterbodies

Filippov,

Tarasov,

Filippova

2024

Metals

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The mechanical characteristics and sliding friction behaviors of AA7075 samples were studied in regard to structural states formed in them by ECAP and depending on the ECAP pass number. In addition, the effect of a counterbody’s material on the tribological characteristics of the samples was investigated by the examples of AISI 52100 steel, alumina Al2O3 and silicon nitride Si3N4. Vibration acceleration and acoustic emission signals with parameters such as acoustic emission energy and median frequency were used for characterizing the sliding regimes. The structural state and mechanical properties of the ECAPed AA7075 samples significantly affected their wear behaviors in dry sliding. The counterbody material had a significant influence on the formation of a transfer layer and the subsurface deformation of samples. The dynamic behavior of the tribosystem was studied and the relationship between the sliding parameters, vibrometry and acoustic emission signals was established.

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Wear behavior of HPT processed UFG AZ31B magnesium alloy

Cited by 29 publications

References 14 publications

Effects of Gd/Nd Ratio and Aging Treatment on Wear Behavior of Mg-Nd-Gd-Sr-Zn-Zr Alloys

Effects of Gd/Nd Ratio and Aging Treatment on Wear Behavior of Mg-Nd-Gd-Sr-Zn-Zr Alloys

Mechanical and wear behavior of room-temperature ECAPed Mg-4Li alloy

The Effect of Ultrafine-Grained (UFG) Structure Formed by Equal-Channel Angular Pressing in AA7075 on Wear and Friction in Sliding against Steel and Ceramic Counterbodies

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