Warm-cold rolling enhances the heterogeneity of austenitic stainless steel: Achieving a match of high strength and ductility
A heterostructure austenitic stainless steel was prepared using a novel strategy of warm rolling, cold rolling and short-time annealing (WCA). The tensile strength of 1239 MPa, yield strength of 1122 MPa, and total elongation of 29.4 % was obtained. Compared with the traditional two-step cold rollin...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424027509 |
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| author | Shuyi Quan Shengrui Su Renbo Song Changhong Cai Kaikun Wang |
| author_facet | Shuyi Quan Shengrui Su Renbo Song Changhong Cai Kaikun Wang |
| author_sort | Shuyi Quan |
| collection | DOAJ |
| description | A heterostructure austenitic stainless steel was prepared using a novel strategy of warm rolling, cold rolling and short-time annealing (WCA). The tensile strength of 1239 MPa, yield strength of 1122 MPa, and total elongation of 29.4 % was obtained. Compared with the traditional two-step cold rolling annealing process (CACA), the WCA process can enhance structural heterogeneity, substantially increasing ductility at a comparable yield strength. This is mainly due to the inhibition of strain-induced martensite transformation, the retention of large deformed austenite grains, and the pinning effect of nano Cu-rich precipitates on grain boundaries. Hetero-deformation induced strengthening and precipitation strengthening compensate for the dislocation strengthening and grain boundary strengthening. A higher proportion of large-sized fine grains and smaller Cr-rich precipitates contribute to the sustained strain hardening. This work provides a new strategy for preparing austenitic stainless steel with excellent mechanical properties and has important industrial application potential. |
| format | Article |
| id | doaj-art-6f16f07fb1304d2f964be9dbb92835e3 |
| institution | DOAJ |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-6f16f07fb1304d2f964be9dbb92835e32025-08-20T02:39:13ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01338880888610.1016/j.jmrt.2024.11.222Warm-cold rolling enhances the heterogeneity of austenitic stainless steel: Achieving a match of high strength and ductilityShuyi Quan0Shengrui Su1Renbo Song2Changhong Cai3Kaikun Wang4School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Corresponding author.School of Mechanical and Materials Engineering, North China University of Technology, Beijing, 100144, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, ChinaA heterostructure austenitic stainless steel was prepared using a novel strategy of warm rolling, cold rolling and short-time annealing (WCA). The tensile strength of 1239 MPa, yield strength of 1122 MPa, and total elongation of 29.4 % was obtained. Compared with the traditional two-step cold rolling annealing process (CACA), the WCA process can enhance structural heterogeneity, substantially increasing ductility at a comparable yield strength. This is mainly due to the inhibition of strain-induced martensite transformation, the retention of large deformed austenite grains, and the pinning effect of nano Cu-rich precipitates on grain boundaries. Hetero-deformation induced strengthening and precipitation strengthening compensate for the dislocation strengthening and grain boundary strengthening. A higher proportion of large-sized fine grains and smaller Cr-rich precipitates contribute to the sustained strain hardening. This work provides a new strategy for preparing austenitic stainless steel with excellent mechanical properties and has important industrial application potential.http://www.sciencedirect.com/science/article/pii/S2238785424027509Austenitic stainless steelWarm rolling cold rollingHeterostructureHDI strengtheningYield drop |
| spellingShingle | Shuyi Quan Shengrui Su Renbo Song Changhong Cai Kaikun Wang Warm-cold rolling enhances the heterogeneity of austenitic stainless steel: Achieving a match of high strength and ductility Journal of Materials Research and Technology Austenitic stainless steel Warm rolling cold rolling Heterostructure HDI strengthening Yield drop |
| title | Warm-cold rolling enhances the heterogeneity of austenitic stainless steel: Achieving a match of high strength and ductility |
| title_full | Warm-cold rolling enhances the heterogeneity of austenitic stainless steel: Achieving a match of high strength and ductility |
| title_fullStr | Warm-cold rolling enhances the heterogeneity of austenitic stainless steel: Achieving a match of high strength and ductility |
| title_full_unstemmed | Warm-cold rolling enhances the heterogeneity of austenitic stainless steel: Achieving a match of high strength and ductility |
| title_short | Warm-cold rolling enhances the heterogeneity of austenitic stainless steel: Achieving a match of high strength and ductility |
| title_sort | warm cold rolling enhances the heterogeneity of austenitic stainless steel achieving a match of high strength and ductility |
| topic | Austenitic stainless steel Warm rolling cold rolling Heterostructure HDI strengthening Yield drop |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424027509 |
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