Effect of Multiple Shot Peening on Residual Stress and Microstructure of CNT/Al−Mg−Si Alloy Composite
In this study, multiple shot peening was performed on a carbon nanotubes−reinforced aluminum matrix composite, of which residual stress fields and tissue structure evolution were investigated. It is shown that the multiple shot peening could significantly increase the magnitude of compressive residu...
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| Format: | Article |
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MDPI AG
2022-08-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/9/1412 |
| _version_ | 1797484829513613312 |
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| author | Kaiyuan Zhu Zhiqiang Li Genlian Fan Chuanhai Jiang |
| author_facet | Kaiyuan Zhu Zhiqiang Li Genlian Fan Chuanhai Jiang |
| author_sort | Kaiyuan Zhu |
| collection | DOAJ |
| description | In this study, multiple shot peening was performed on a carbon nanotubes−reinforced aluminum matrix composite, of which residual stress fields and tissue structure evolution were investigated. It is shown that the multiple shot peening could significantly increase the magnitude of compressive residual stress field, modify surface morphology of the specimens, and further refine the grain sizes of the near surface layer. Dislocation density in the near−surface layers were also elevated by multiple shot peening. Moreover, enhanced microhardness with more even distribution were obtained in the modified peened layers ascribed to the raised compressive residual stress field and microstructure which could give rise to the strain−hardening effects. |
| first_indexed | 2024-03-09T23:11:05Z |
| format | Article |
| id | doaj.art-c0def5a3b5804cdea68d715fa65581e7 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T23:11:05Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-c0def5a3b5804cdea68d715fa65581e72023-11-23T17:45:36ZengMDPI AGMetals2075-47012022-08-01129141210.3390/met12091412Effect of Multiple Shot Peening on Residual Stress and Microstructure of CNT/Al−Mg−Si Alloy CompositeKaiyuan Zhu0Zhiqiang Li1Genlian Fan2Chuanhai Jiang3School of Physics, East China University of Science and Technology, No. 130 Meilong Road, Shanghai 200237, ChinaSchool of Material Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, ChinaSchool of Material Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, ChinaSchool of Material Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, ChinaIn this study, multiple shot peening was performed on a carbon nanotubes−reinforced aluminum matrix composite, of which residual stress fields and tissue structure evolution were investigated. It is shown that the multiple shot peening could significantly increase the magnitude of compressive residual stress field, modify surface morphology of the specimens, and further refine the grain sizes of the near surface layer. Dislocation density in the near−surface layers were also elevated by multiple shot peening. Moreover, enhanced microhardness with more even distribution were obtained in the modified peened layers ascribed to the raised compressive residual stress field and microstructure which could give rise to the strain−hardening effects.https://www.mdpi.com/2075-4701/12/9/1412CNTsresidual stressmultiple shot peeningX-ray |
| spellingShingle | Kaiyuan Zhu Zhiqiang Li Genlian Fan Chuanhai Jiang Effect of Multiple Shot Peening on Residual Stress and Microstructure of CNT/Al−Mg−Si Alloy Composite Metals CNTs residual stress multiple shot peening X-ray |
| title | Effect of Multiple Shot Peening on Residual Stress and Microstructure of CNT/Al−Mg−Si Alloy Composite |
| title_full | Effect of Multiple Shot Peening on Residual Stress and Microstructure of CNT/Al−Mg−Si Alloy Composite |
| title_fullStr | Effect of Multiple Shot Peening on Residual Stress and Microstructure of CNT/Al−Mg−Si Alloy Composite |
| title_full_unstemmed | Effect of Multiple Shot Peening on Residual Stress and Microstructure of CNT/Al−Mg−Si Alloy Composite |
| title_short | Effect of Multiple Shot Peening on Residual Stress and Microstructure of CNT/Al−Mg−Si Alloy Composite |
| title_sort | effect of multiple shot peening on residual stress and microstructure of cnt al mg si alloy composite |
| topic | CNTs residual stress multiple shot peening X-ray |
| url | https://www.mdpi.com/2075-4701/12/9/1412 |
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