Clarifying the adverse effect of secondary phase on the tribological property of Mg alloy
Introduction of hard particles is considered an effective approach to improve alloy wear resistances. However, the wear resistances of Mg alloys could be deteriorated by increasing the hard particle content in many researches. To reveal the underlying negative effect of precipitate on the wear resis...
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| Format: | Article |
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KeAi Communications Co., Ltd.
2025-06-01
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| Series: | Journal of Magnesium and Alloys |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956725000532 |
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| author | Jie Li Ting Zou Junjie Yang Helong Yu Peng Zhang Xiaochao Ji Xin Zhao Zhiyong Yan Wei Li |
| author_facet | Jie Li Ting Zou Junjie Yang Helong Yu Peng Zhang Xiaochao Ji Xin Zhao Zhiyong Yan Wei Li |
| author_sort | Jie Li |
| collection | DOAJ |
| description | Introduction of hard particles is considered an effective approach to improve alloy wear resistances. However, the wear resistances of Mg alloys could be deteriorated by increasing the hard particle content in many researches. To reveal the underlying negative effect of precipitate on the wear resistance, the wear behaviors of three AZ-Mg alloys (precipitate contents: AZ31: 2.1%, AZ61: 3.8%, AZ91: 5.0%) at the axial loads of 3 and 15 N were investigated. The results indicated that although wear volume of the AZ-Mg alloys decreased with the increasing Mg17Al12 content at 3 N (0.30→0.24→0.20 µm3) and 15 N (1.04→0.88→0.85 µm3), the relative wear resistances of AZ61 and AZ91 to AZ31 decreased with increasing load (AZ61: 1.25→1.17, AZ91: 1.50→1.22) and the reduction was proportional to the precipitates content (AZ61:7%, AZ91:28%). That is because the wear volume of AZ-Mg was mainly attributed to micro-cutting, which was negatively correlated with the precipitate content and tribolayer hardness. However, the wear hardening ability of AZ-Mg alloys was weakened by precipitate for its inhibition on the formation of mechanical twins that the precursors for the tribolayer. Moreover, the inhibition of the precipitate on tribolayer could be amplified by the load, resulting in an increase in tribolayer hardness at 3 N (AZ31: 0.94, AZ61: 1.03, AZ91: 1.10 GPa) but a decrease at 15 N (AZ31: 1.77, AZ61: 1.73, AZ91: 1.62 GPa). Therefore, the formation of twin was inhibited by precipitates, which is detrimental to the wear resistance of Mg alloys. That means the wear resistance could be enhanced by promoting twin formation, which provides a new concept for the design of wear-resistant Mg alloys. |
| format | Article |
| id | doaj-art-1a92be85160249b0a2db285560f934d8 |
| institution | Kabale University |
| issn | 2213-9567 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj-art-1a92be85160249b0a2db285560f934d82025-08-20T03:50:31ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672025-06-011362699271010.1016/j.jma.2025.02.003Clarifying the adverse effect of secondary phase on the tribological property of Mg alloyJie Li0Ting Zou1Junjie Yang2Helong Yu3Peng Zhang4Xiaochao Ji5Xin Zhao6Zhiyong Yan7Wei Li8Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, PR ChinaInstitute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, PR ChinaInstitute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, PR China; Shaoguan Research Institute of Jinan University, Shaoguan 512027, PR China; Corresponding authors.National Key Laboratory for Remanufacturing of AAAF, Beijing 100072, PR China; Corresponding authors.Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, PR ChinaSchool of Mechatronic Engineering and Automation, Foshan University, Foshan 528225, PR ChinaInner Mongolia First Machinery Group Co., LTD, Baotou 014030, PR ChinaInner Mongolia First Machinery Group Co., LTD, Baotou 014030, PR ChinaInstitute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, PR China; National Joint Engineering Research Center of High Performance Metal Wear Resistant Materials Technology, Jinan University, Guangzhou 510632, PR ChinaIntroduction of hard particles is considered an effective approach to improve alloy wear resistances. However, the wear resistances of Mg alloys could be deteriorated by increasing the hard particle content in many researches. To reveal the underlying negative effect of precipitate on the wear resistance, the wear behaviors of three AZ-Mg alloys (precipitate contents: AZ31: 2.1%, AZ61: 3.8%, AZ91: 5.0%) at the axial loads of 3 and 15 N were investigated. The results indicated that although wear volume of the AZ-Mg alloys decreased with the increasing Mg17Al12 content at 3 N (0.30→0.24→0.20 µm3) and 15 N (1.04→0.88→0.85 µm3), the relative wear resistances of AZ61 and AZ91 to AZ31 decreased with increasing load (AZ61: 1.25→1.17, AZ91: 1.50→1.22) and the reduction was proportional to the precipitates content (AZ61:7%, AZ91:28%). That is because the wear volume of AZ-Mg was mainly attributed to micro-cutting, which was negatively correlated with the precipitate content and tribolayer hardness. However, the wear hardening ability of AZ-Mg alloys was weakened by precipitate for its inhibition on the formation of mechanical twins that the precursors for the tribolayer. Moreover, the inhibition of the precipitate on tribolayer could be amplified by the load, resulting in an increase in tribolayer hardness at 3 N (AZ31: 0.94, AZ61: 1.03, AZ91: 1.10 GPa) but a decrease at 15 N (AZ31: 1.77, AZ61: 1.73, AZ91: 1.62 GPa). Therefore, the formation of twin was inhibited by precipitates, which is detrimental to the wear resistance of Mg alloys. That means the wear resistance could be enhanced by promoting twin formation, which provides a new concept for the design of wear-resistant Mg alloys.http://www.sciencedirect.com/science/article/pii/S2213956725000532Magnesium alloyMg-Al precipitatesMechanical twinWear resistance |
| spellingShingle | Jie Li Ting Zou Junjie Yang Helong Yu Peng Zhang Xiaochao Ji Xin Zhao Zhiyong Yan Wei Li Clarifying the adverse effect of secondary phase on the tribological property of Mg alloy Journal of Magnesium and Alloys Magnesium alloy Mg-Al precipitates Mechanical twin Wear resistance |
| title | Clarifying the adverse effect of secondary phase on the tribological property of Mg alloy |
| title_full | Clarifying the adverse effect of secondary phase on the tribological property of Mg alloy |
| title_fullStr | Clarifying the adverse effect of secondary phase on the tribological property of Mg alloy |
| title_full_unstemmed | Clarifying the adverse effect of secondary phase on the tribological property of Mg alloy |
| title_short | Clarifying the adverse effect of secondary phase on the tribological property of Mg alloy |
| title_sort | clarifying the adverse effect of secondary phase on the tribological property of mg alloy |
| topic | Magnesium alloy Mg-Al precipitates Mechanical twin Wear resistance |
| url | http://www.sciencedirect.com/science/article/pii/S2213956725000532 |
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