High Mechanical Properties of AZ91 Mg Alloy Processed by Equal Channel Angular Pressing and Rolling
Mechanical properties usually take precedence for wrought magnesium alloy when it would be used as a structure material. This paper proposed an approach that achieved high strength in AZ91 Mg alloy. The main procedure combined solution heat treatment, equal channel angular pressing (ECAP), and the s...
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| Format: | Article |
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MDPI AG
2019-03-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/9/4/386 |
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| author | Yuchun Yuan Qingfang Guo Jiapeng Sun Huan Liu Qiong Xu Yuna Wu Dan Song Jinghua Jiang Aibin Ma |
| author_facet | Yuchun Yuan Qingfang Guo Jiapeng Sun Huan Liu Qiong Xu Yuna Wu Dan Song Jinghua Jiang Aibin Ma |
| author_sort | Yuchun Yuan |
| collection | DOAJ |
| description | Mechanical properties usually take precedence for wrought magnesium alloy when it would be used as a structure material. This paper proposed an approach that achieved high strength in AZ91 Mg alloy. The main procedure combined solution heat treatment, equal channel angular pressing (ECAP), and the subsequent low temperature rolling. After solution heat treatment and ECAP, the alloy had fine grains and excellent ductility, which benefited the following rolling at low temperature. By the following rolling (at 150 °C), the strength was further increased to ~432 MPa with a moderate ductility. This approach was proved effective in refining the grains and accumulating dislocations. The ultrahigh strength was attributed to the high density of dislocations and fine structure. The uniformly distributed fine precipitates also supplied precipitate hardening. Recrystallization that happened during rolling and annealing was the main reason for the moderate ductility. |
| first_indexed | 2024-12-11T23:52:53Z |
| format | Article |
| id | doaj.art-ef431a8080a143f9974037e79b3ce6da |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-11T23:52:53Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-ef431a8080a143f9974037e79b3ce6da2022-12-22T00:45:27ZengMDPI AGMetals2075-47012019-03-019438610.3390/met9040386met9040386High Mechanical Properties of AZ91 Mg Alloy Processed by Equal Channel Angular Pressing and RollingYuchun Yuan0Qingfang Guo1Jiapeng Sun2Huan Liu3Qiong Xu4Yuna Wu5Dan Song6Jinghua Jiang7Aibin Ma8College of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaCollege of Mechanics and Materials, Hohai University, Nanjing 211100, ChinaMechanical properties usually take precedence for wrought magnesium alloy when it would be used as a structure material. This paper proposed an approach that achieved high strength in AZ91 Mg alloy. The main procedure combined solution heat treatment, equal channel angular pressing (ECAP), and the subsequent low temperature rolling. After solution heat treatment and ECAP, the alloy had fine grains and excellent ductility, which benefited the following rolling at low temperature. By the following rolling (at 150 °C), the strength was further increased to ~432 MPa with a moderate ductility. This approach was proved effective in refining the grains and accumulating dislocations. The ultrahigh strength was attributed to the high density of dislocations and fine structure. The uniformly distributed fine precipitates also supplied precipitate hardening. Recrystallization that happened during rolling and annealing was the main reason for the moderate ductility.https://www.mdpi.com/2075-4701/9/4/386magnesium alloyECAProlling strengthprecipitate |
| spellingShingle | Yuchun Yuan Qingfang Guo Jiapeng Sun Huan Liu Qiong Xu Yuna Wu Dan Song Jinghua Jiang Aibin Ma High Mechanical Properties of AZ91 Mg Alloy Processed by Equal Channel Angular Pressing and Rolling Metals magnesium alloy ECAP rolling strength precipitate |
| title | High Mechanical Properties of AZ91 Mg Alloy Processed by Equal Channel Angular Pressing and Rolling |
| title_full | High Mechanical Properties of AZ91 Mg Alloy Processed by Equal Channel Angular Pressing and Rolling |
| title_fullStr | High Mechanical Properties of AZ91 Mg Alloy Processed by Equal Channel Angular Pressing and Rolling |
| title_full_unstemmed | High Mechanical Properties of AZ91 Mg Alloy Processed by Equal Channel Angular Pressing and Rolling |
| title_short | High Mechanical Properties of AZ91 Mg Alloy Processed by Equal Channel Angular Pressing and Rolling |
| title_sort | high mechanical properties of az91 mg alloy processed by equal channel angular pressing and rolling |
| topic | magnesium alloy ECAP rolling strength precipitate |
| url | https://www.mdpi.com/2075-4701/9/4/386 |
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