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

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 (...

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Autores principales:	Fujun Tao, Hongfei Duan, Lijun Zhao, Jian An
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> alloy long-period stacking ordered phase wear mechanism wear transition dynamic recrystallization Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/9a7e4dfd9f3b4ea79ce75ebb1eea3bd7
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spelling	oai:doaj.org-article:9a7e4dfd9f3b4ea79ce75ebb1eea3bd72021-11-25T18:22:27ZMasking Effect of LPSO Structure Phase on Wear Transition in Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> Alloy10.3390/met111118572075-4701https://doaj.org/article/9a7e4dfd9f3b4ea79ce75ebb1eea3bd72021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1857https://doaj.org/toc/2075-4701Room- and elevated-temperature wear tests were conducted using a pin-on-disk testing machine to study wear behavior of Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> 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.Fujun TaoHongfei DuanLijun ZhaoJian AnMDPI AGarticleMg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> alloylong-period stacking ordered phasewear mechanismwear transitiondynamic recrystallizationMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1857, p 1857 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> alloy long-period stacking ordered phase wear mechanism wear transition dynamic recrystallization Mining engineering. Metallurgy TN1-997
spellingShingle	Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> alloy long-period stacking ordered phase wear mechanism wear transition dynamic recrystallization Mining engineering. Metallurgy TN1-997 Fujun Tao Hongfei Duan Lijun Zhao Jian An Masking Effect of LPSO Structure Phase on Wear Transition in Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> Alloy
description	Room- and elevated-temperature wear tests were conducted using a pin-on-disk testing machine to study wear behavior of Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> 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.
format	article
author	Fujun Tao Hongfei Duan Lijun Zhao Jian An
author_facet	Fujun Tao Hongfei Duan Lijun Zhao Jian An
author_sort	Fujun Tao
title	Masking Effect of LPSO Structure Phase on Wear Transition in Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> Alloy
title_short	Masking Effect of LPSO Structure Phase on Wear Transition in Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> Alloy
title_full	Masking Effect of LPSO Structure Phase on Wear Transition in Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> Alloy
title_fullStr	Masking Effect of LPSO Structure Phase on Wear Transition in Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> Alloy
title_full_unstemmed	Masking Effect of LPSO Structure Phase on Wear Transition in Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> Alloy
title_sort	masking effect of lpso structure phase on wear transition in mg<sub>97</sub>zn<sub>1</sub>y<sub>2</sub> alloy
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9a7e4dfd9f3b4ea79ce75ebb1eea3bd7
work_keys_str_mv	AT fujuntao maskingeffectoflpsostructurephaseonweartransitioninmgsub97subznsub1subysub2suballoy AT hongfeiduan maskingeffectoflpsostructurephaseonweartransitioninmgsub97subznsub1subysub2suballoy AT lijunzhao maskingeffectoflpsostructurephaseonweartransitioninmgsub97subznsub1subysub2suballoy AT jianan maskingeffectoflpsostructurephaseonweartransitioninmgsub97subznsub1subysub2suballoy
_version_	1718411273807331328

Masking Effect of LPSO Structure Phase on Wear Transition in Mg<sub>97</sub>Zn<sub>1</sub>Y<sub>2</sub> Alloy

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