Simultaneous Improvement of Strength and Ductility of Dual-Phase Steel Processed by Multi-Step Cyclic Rolling and Intercritical Annealing
In the present study, a multi-step (MS) cyclic rolling and intercritcal annealing process was proposed and applied for dual-phase (DP) steel. The MS process performed three times with 27% deformations and intercritical annealing, while the single-step (SS) process performed an 81% rolling, along wit...
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MDPI AG
2022-09-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/18/6424 |
| _version_ | 1797485296750690304 |
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| author | Litao Liu Bin Fu Yanhui Guo Liqun Wei |
| author_facet | Litao Liu Bin Fu Yanhui Guo Liqun Wei |
| author_sort | Litao Liu |
| collection | DOAJ |
| description | In the present study, a multi-step (MS) cyclic rolling and intercritcal annealing process was proposed and applied for dual-phase (DP) steel. The MS process performed three times with 27% deformations and intercritical annealing, while the single-step (SS) process performed an 81% rolling, along with intercritical annealing. A microstructure with an average grain size of 3 μm and a martensite content of ~40% was obtained after MS treatment, which is similar to results obtained from the SS treatment. However, the distribution exhibits significant differences between the two different routes. A more homogenous distribution of ferrite–martensite was achieved after the multi-step compared with the single-step treatment. The yield strength of MS is slightly smaller than that of SS, while the ultimate tensile strength is better, which results in a decrease in yield ratio. Furthermore, the ductility was greatly improved after MS, which is mainly attributed to the uniform chain-like distribution of martensite. |
| first_indexed | 2024-03-09T23:17:42Z |
| format | Article |
| id | doaj.art-90590f6ed23d4402a389bc1eec1595f9 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T23:17:42Z |
| publishDate | 2022-09-01 |
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| spelling | doaj.art-90590f6ed23d4402a389bc1eec1595f92023-11-23T17:33:23ZengMDPI AGMaterials1996-19442022-09-011518642410.3390/ma15186424Simultaneous Improvement of Strength and Ductility of Dual-Phase Steel Processed by Multi-Step Cyclic Rolling and Intercritical AnnealingLitao Liu0Bin Fu1Yanhui Guo2Liqun Wei3School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, ChinaSchool of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, ChinaSchool of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, ChinaSchool of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, ChinaIn the present study, a multi-step (MS) cyclic rolling and intercritcal annealing process was proposed and applied for dual-phase (DP) steel. The MS process performed three times with 27% deformations and intercritical annealing, while the single-step (SS) process performed an 81% rolling, along with intercritical annealing. A microstructure with an average grain size of 3 μm and a martensite content of ~40% was obtained after MS treatment, which is similar to results obtained from the SS treatment. However, the distribution exhibits significant differences between the two different routes. A more homogenous distribution of ferrite–martensite was achieved after the multi-step compared with the single-step treatment. The yield strength of MS is slightly smaller than that of SS, while the ultimate tensile strength is better, which results in a decrease in yield ratio. Furthermore, the ductility was greatly improved after MS, which is mainly attributed to the uniform chain-like distribution of martensite.https://www.mdpi.com/1996-1944/15/18/6424dual-phase steelgrain refinementmartensite distributionfracture performance |
| spellingShingle | Litao Liu Bin Fu Yanhui Guo Liqun Wei Simultaneous Improvement of Strength and Ductility of Dual-Phase Steel Processed by Multi-Step Cyclic Rolling and Intercritical Annealing Materials dual-phase steel grain refinement martensite distribution fracture performance |
| title | Simultaneous Improvement of Strength and Ductility of Dual-Phase Steel Processed by Multi-Step Cyclic Rolling and Intercritical Annealing |
| title_full | Simultaneous Improvement of Strength and Ductility of Dual-Phase Steel Processed by Multi-Step Cyclic Rolling and Intercritical Annealing |
| title_fullStr | Simultaneous Improvement of Strength and Ductility of Dual-Phase Steel Processed by Multi-Step Cyclic Rolling and Intercritical Annealing |
| title_full_unstemmed | Simultaneous Improvement of Strength and Ductility of Dual-Phase Steel Processed by Multi-Step Cyclic Rolling and Intercritical Annealing |
| title_short | Simultaneous Improvement of Strength and Ductility of Dual-Phase Steel Processed by Multi-Step Cyclic Rolling and Intercritical Annealing |
| title_sort | simultaneous improvement of strength and ductility of dual phase steel processed by multi step cyclic rolling and intercritical annealing |
| topic | dual-phase steel grain refinement martensite distribution fracture performance |
| url | https://www.mdpi.com/1996-1944/15/18/6424 |
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