Correlation between test temperature, applied load and wear transition of Mg97Zn1Y2 alloy

An, Jian; Tian, Ye; Feng, Chao

doi:10.1016/j.jma.2020.02.024

Cited by 16 publications

(9 citation statements)

References 27 publications

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“…In the first stages, the wear rates were found to be below 35 × 10 −12 m 3 m −1 . Such a wear rate limit value in the first stages is quite similar to the wear rate at SW transition state for pure titanium pin sliding against hardened gauge steel with hardness 701HV5 at 0.5 m/s, i.e., 30 × 10 −12 m 3 m −1 [19], and it is also approximately equal to the wear rates at SW transition state at 0.5 m/s for several Mg alloys including AZ91, Mg97Zn1Y2 and Mg-Gd-Y-Zr alloys, e.g., 39.9 × 10 −12 m 3 m −1 for AZ91 alloy, 39.8 × 10 −12 m 3 m −1 for Mg97Zn1Y2 alloy, 31.7 × 10 −12 m 3 m −1 for Mg-10.1Gd-1.4Y-0.4Zr alloy [12,20,21]. Therefore, it can be preliminarily assumed that the wear is mild in the first stage, but it is severe in the second stage, and the corresponding loads for SW transition at 20 and 50 • C are 120 N and 140 N, respectively.…”

Section: Wear At 20 and 50 • Cmentioning

confidence: 99%

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Two Types of Wear Mechanisms Governing Transition between Mild and Severe Wear in Ti-6Al-4V Alloy during Dry Sliding at Temperatures of 20–250 °C

Zhang

Jian

2022

Materials

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Dry wear characteristics and wear mechanisms governing mild-severe wear transition of Ti-6Al-4V alloy were studied during sliding against medium carbon chromium steel (50Cr) in an experimental temperature range of 20–250 °C. At each experimental temperature, wear rate was plotted against applied load, and its variation was broken into two stages according to the difference of slope. Morphologies and contents of worn surfaces were examined by scanning electron microscope and energy dispersive X-ray spectrometer, from which the two stages were identified to correspond to mild and severe wear, respectively. Two types of wear mechanisms that dominated mild-severe wear transition were found, i.e., breakdown of mechanically mixed layer at temperatures of 20 and 50 °C, and severe plastic deformation at temperatures of 100–250 °C. Microstructures and hardness were examined in the subsurfaces, from which severe plastic deformation-dominated mild-severe wear transition was identified to be caused by the softening arising from friction heating-induced dynamic recrystallization. A linear relation between mild-severe wear transition load and experimental temperature was discovered. The intercept of experimental temperature axis 450 °C was obtained by linearly fitting, and it was considered as a critical dynamic recrystallzation temperature for mild-severe wear transition within the temperature range of 100–250 °C.

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Section: Wear At 20 and 50 • Cmentioning

confidence: 99%

“…Titanium oxide TiO and iron oxide (magnetite) were confirmed to form on the two worn surfaces. The overall surface damage is mild in the first stages, and these wear mechanisms also usually operate in mild wear for Al-based alloys and Mg-based alloys under room and elevated-temperature sliding conditions [12,13,20].…”

Section: Wear At 20 and 50 • Cmentioning

confidence: 99%

Two Types of Wear Mechanisms Governing Transition between Mild and Severe Wear in Ti-6Al-4V Alloy during Dry Sliding at Temperatures of 20–250 °C

Zhang

Jian

2022

Materials

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“…Thus, wear mechanisms in the second stage were severe plastic deformation. It is well accepted that severe plastic deformation is a type of severe wear for magnesium alloys since surface material loses its original good ability to resist plastic flow [8][9][10][11][12][13][14][15]. Therefore, according to the wear mechanism operating in this stage, wear enters severe wear regime in the second stage even though the wear rate value does not increase continuously throughout the stage.…”

Section: Wear Mechanismsmentioning

confidence: 99%

“…The critical applied load can be expressed as Equation (2). As mentioned above, the real origin of SWT is the surface softening effect due to DRX realization, and it has been reported that the plastic deformation strain nearby surface is usually substantial enough for deformation requirement of DRX realization [9,11]. Thus, the surface temperature is the only one key factor for DRX realization.…”

Section: Relationship Between Critical Applied Load For Swt and Test Temperaturementioning

confidence: 99%

“…Even though conventional Mg-based alloys are not regard as proper alternatives to Al-based alloys in tribological applications owing to their low strength, indifferent ductility and poor thermal stability [8,9], Mg 97 Zn 1 Y 2 alloy has the potential to make wear components such as bearing, pistons of engine and clutch in automotive industry and low-mediate-load bearing gear in aerospace industry [10,11]. To achieve this goal, the room-and elevated-temperature wear performance of Mg 97 Zn 1 Y 2 alloy should be studied, in which the mild-severe wear transition (hereafter abbreviated as SWT) and the role of LPSO structure phase are two main concerns.…”

Section: Introductionmentioning

confidence: 99%

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Masking Effect of LPSO Structure Phase on Wear Transition in Mg97Zn1Y2 Alloy

Tao

Duan

Zhao

et al. 2021

Metals

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Room- and elevated-temperature wear tests were conducted using a pin-on-disk testing machine to study wear behavior of Mg97Zn1Y2 alloy and role of long-period-stacking-ordered (LPSO) structure phase in mild–severe wear transition (SWT). Variation of wear rate exhibited a three-stage characteristic with load at various test temperatures, i.e., a gradual increasing stage, a slightly higher plateau stage, and a rapid rising stage. The wear mechanisms in the three stages were identified using scanning electron microscope (SEM), from which the first stage was confirmed as mild wear, and the other two stages were verified as severe wear. The interdendritic LPSO structure phase was elongated into strips along the sliding direction with Mg matrix deformation in the subsurface, plate-like LPSO structure phase precipitated at elevated temperatures of 150 and 200 °C. The fiber enhancement effect and precipitation effect of LPSO structure phase resulted in a little difference in wear rate between the first and second stages, i.e., a masking effect on SWT. Microstructure and microhardness were examined in the subsurfaces, from which the mechanism for SWT was confirmed to be dynamic recrystallization (DRX) softening. There is an apparently linear correlation between the critical load for SWT and test temperature, indicating that SWT is governed by a common critical DRX temperature.

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Study on Heat Input Effect of 316L Stainless Steel Thin-Walled Parts Processed by Wire Arc Additive Manufacturing

Gowthaman,

Jeyakumar,

Sarathchandra

2024

J. of Materi Eng and Perform

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Correlation between test temperature, applied load and wear transition of Mg97Zn1Y2 alloy

Cited by 16 publications

References 27 publications

Two Types of Wear Mechanisms Governing Transition between Mild and Severe Wear in Ti-6Al-4V Alloy during Dry Sliding at Temperatures of 20–250 °C

Two Types of Wear Mechanisms Governing Transition between Mild and Severe Wear in Ti-6Al-4V Alloy during Dry Sliding at Temperatures of 20–250 °C

Masking Effect of LPSO Structure Phase on Wear Transition in Mg97Zn1Y2 Alloy

Study on Heat Input Effect of 316L Stainless Steel Thin-Walled Parts Processed by Wire Arc Additive Manufacturing

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