Production of Surface Layer with Gradient Microstructure and Microhardess on Copper by High Pressure Surface Rolling
Pure copper was subjected to high-pressure surface rolling (HPSR) to obtain a surface gradient layer. Effects of HPSR parameters on the surface microstructure and microhardness of Cu were investigated by using optical microscopy, transmission electronic microscopy, X-ray diffraction, and the microha...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-01-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/1/73 |
| _version_ | 1818504080998268928 |
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| author | Juying Li Qingsong Mei Yana Li Beihai Wang |
| author_facet | Juying Li Qingsong Mei Yana Li Beihai Wang |
| author_sort | Juying Li |
| collection | DOAJ |
| description | Pure copper was subjected to high-pressure surface rolling (HPSR) to obtain a surface gradient layer. Effects of HPSR parameters on the surface microstructure and microhardness of Cu were investigated by using optical microscopy, transmission electronic microscopy, X-ray diffraction, and the microhardness test. The HPSR surface layer has a gradient microstructure consisting of increasingly refined grains with decreasing depth from the treated surface (DFS). The thicknesses of the refined surface layer can be up to ~1.8 mm, and the grain size of the topmost surface is down to ~88 nm, depending on the HPSR parameters including pressure, time, and temperature. Microhardness of HPSR samples increases with decreasing DFS, with a maximum of ~2.4 times that of the undeformed matrix. The present results indicated that HPSR could be an effective method for the production of a mm-thick surface layer on Cu with gradient microstructure and property. |
| first_indexed | 2024-12-10T21:32:18Z |
| format | Article |
| id | doaj.art-7952bd5e923f4049b4ad9d55d6e6d2fe |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-10T21:32:18Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-7952bd5e923f4049b4ad9d55d6e6d2fe2022-12-22T01:32:45ZengMDPI AGMetals2075-47012020-01-011017310.3390/met10010073met10010073Production of Surface Layer with Gradient Microstructure and Microhardess on Copper by High Pressure Surface RollingJuying Li0Qingsong Mei1Yana Li2Beihai Wang3School of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430023, ChinaSchool of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, ChinaSchool of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430023, ChinaSchool of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430023, ChinaPure copper was subjected to high-pressure surface rolling (HPSR) to obtain a surface gradient layer. Effects of HPSR parameters on the surface microstructure and microhardness of Cu were investigated by using optical microscopy, transmission electronic microscopy, X-ray diffraction, and the microhardness test. The HPSR surface layer has a gradient microstructure consisting of increasingly refined grains with decreasing depth from the treated surface (DFS). The thicknesses of the refined surface layer can be up to ~1.8 mm, and the grain size of the topmost surface is down to ~88 nm, depending on the HPSR parameters including pressure, time, and temperature. Microhardness of HPSR samples increases with decreasing DFS, with a maximum of ~2.4 times that of the undeformed matrix. The present results indicated that HPSR could be an effective method for the production of a mm-thick surface layer on Cu with gradient microstructure and property.https://www.mdpi.com/2075-4701/10/1/73high-pressure surface rollingcoppergrain refinementmicrohardness |
| spellingShingle | Juying Li Qingsong Mei Yana Li Beihai Wang Production of Surface Layer with Gradient Microstructure and Microhardess on Copper by High Pressure Surface Rolling Metals high-pressure surface rolling copper grain refinement microhardness |
| title | Production of Surface Layer with Gradient Microstructure and Microhardess on Copper by High Pressure Surface Rolling |
| title_full | Production of Surface Layer with Gradient Microstructure and Microhardess on Copper by High Pressure Surface Rolling |
| title_fullStr | Production of Surface Layer with Gradient Microstructure and Microhardess on Copper by High Pressure Surface Rolling |
| title_full_unstemmed | Production of Surface Layer with Gradient Microstructure and Microhardess on Copper by High Pressure Surface Rolling |
| title_short | Production of Surface Layer with Gradient Microstructure and Microhardess on Copper by High Pressure Surface Rolling |
| title_sort | production of surface layer with gradient microstructure and microhardess on copper by high pressure surface rolling |
| topic | high-pressure surface rolling copper grain refinement microhardness |
| url | https://www.mdpi.com/2075-4701/10/1/73 |
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