Annealing Behavior of 6061 Al Alloy Subjected to Differential Speed Rolling Deformation
This study investigated the effects of heat treatment (annealing) on the microstructure of ultrafine grained 6061 Al alloy samples fabricated by a differential speed rolling (DSR) process. The samples were fabricated using two passes DSR with 75% thickness reduction and a speed ratio of 1:4. The DSR...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-11-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/7/11/494 |
| _version_ | 1819241900998131712 |
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| author | Young Gun Ko Kotiba Hamad |
| author_facet | Young Gun Ko Kotiba Hamad |
| author_sort | Young Gun Ko |
| collection | DOAJ |
| description | This study investigated the effects of heat treatment (annealing) on the microstructure of ultrafine grained 6061 Al alloy samples fabricated by a differential speed rolling (DSR) process. The samples were fabricated using two passes DSR with 75% thickness reduction and a speed ratio of 1:4. The DSR-deformed 6061 Al alloy sample exhibited a lamellar boundary structure composed mostly of subgrains surrounded by low-angle grain boundaries. After annealing, the DSR-deformed 6061 Al alloy samples exhibited coarse grained structure and transformed from lamellar to equiaxed, where both the grain size and grain shape aspect ratio increased with increasing annealing temperature. The fraction of grain boundaries with high misorientation angles increased progressively during annealing, to ~77% at annealing temperature of 350 °C. |
| first_indexed | 2024-12-23T14:31:16Z |
| format | Article |
| id | doaj.art-a79a0bb12b294b20bc58f787729b194a |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-23T14:31:16Z |
| publishDate | 2017-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-a79a0bb12b294b20bc58f787729b194a2022-12-21T17:43:28ZengMDPI AGMetals2075-47012017-11-0171149410.3390/met7110494met7110494Annealing Behavior of 6061 Al Alloy Subjected to Differential Speed Rolling DeformationYoung Gun Ko0Kotiba Hamad1School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, KoreaSchool of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, KoreaThis study investigated the effects of heat treatment (annealing) on the microstructure of ultrafine grained 6061 Al alloy samples fabricated by a differential speed rolling (DSR) process. The samples were fabricated using two passes DSR with 75% thickness reduction and a speed ratio of 1:4. The DSR-deformed 6061 Al alloy sample exhibited a lamellar boundary structure composed mostly of subgrains surrounded by low-angle grain boundaries. After annealing, the DSR-deformed 6061 Al alloy samples exhibited coarse grained structure and transformed from lamellar to equiaxed, where both the grain size and grain shape aspect ratio increased with increasing annealing temperature. The fraction of grain boundaries with high misorientation angles increased progressively during annealing, to ~77% at annealing temperature of 350 °C.https://www.mdpi.com/2075-4701/7/11/494differential speed rolling6061 Al alloyannealingmicrostructure |
| spellingShingle | Young Gun Ko Kotiba Hamad Annealing Behavior of 6061 Al Alloy Subjected to Differential Speed Rolling Deformation Metals differential speed rolling 6061 Al alloy annealing microstructure |
| title | Annealing Behavior of 6061 Al Alloy Subjected to Differential Speed Rolling Deformation |
| title_full | Annealing Behavior of 6061 Al Alloy Subjected to Differential Speed Rolling Deformation |
| title_fullStr | Annealing Behavior of 6061 Al Alloy Subjected to Differential Speed Rolling Deformation |
| title_full_unstemmed | Annealing Behavior of 6061 Al Alloy Subjected to Differential Speed Rolling Deformation |
| title_short | Annealing Behavior of 6061 Al Alloy Subjected to Differential Speed Rolling Deformation |
| title_sort | annealing behavior of 6061 al alloy subjected to differential speed rolling deformation |
| topic | differential speed rolling 6061 Al alloy annealing microstructure |
| url | https://www.mdpi.com/2075-4701/7/11/494 |
| work_keys_str_mv | AT younggunko annealingbehaviorof6061alalloysubjectedtodifferentialspeedrollingdeformation AT kotibahamad annealingbehaviorof6061alalloysubjectedtodifferentialspeedrollingdeformation |