Extraordinary strength and ductility of cold-rolled 304L stainless steel at cryogenic temperature
In present work, tensile behaviors of cold-rolled 304L stainless steel were investigated at both room temperature (RT) and liquid nitrogen temperature (LNT). After cold-rolling with a thickness reduction of ∼92%, the 304L stainless steel exhibits an ultrahigh yield strength of 1787 MPa at the expens...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-09-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423018616 |
| _version_ | 1827780576034160640 |
|---|---|
| author | Wei Jiang Kerui Zhu Jiansheng Li Wenbo Qin Jian Zhou Zhumin Li Kaixuan Gui Yu Zhao Qingzhong Mao Banglun Wang |
| author_facet | Wei Jiang Kerui Zhu Jiansheng Li Wenbo Qin Jian Zhou Zhumin Li Kaixuan Gui Yu Zhao Qingzhong Mao Banglun Wang |
| author_sort | Wei Jiang |
| collection | DOAJ |
| description | In present work, tensile behaviors of cold-rolled 304L stainless steel were investigated at both room temperature (RT) and liquid nitrogen temperature (LNT). After cold-rolling with a thickness reduction of ∼92%, the 304L stainless steel exhibits an ultrahigh yield strength of 1787 MPa at the expense of ductility (1.06% of uniform elongation) at RT. At LNT, the yield strength (upper yield point of σyu = 2308.4 MPa and lower yield point of σyl = 1894.2 MPa) and uniform elongation (23%) increase greatly. Detailed microstructural investigation reveals that the cold-rolled 304L stainless steel comprises mainly of deformation induced martensite and high density of dislocations (9.06 ×1014 m−2), leading to a lack of dislocation storage capacity and thus brittle fracture at RT. While interrupt tests at LNT reveal a first increase and then decline in dislocation density with tensile strain, accompanied with phase transformation from austenite to martensite. The delamination events also occur, characterized by the multiple separated laminated ligaments observed at fracture surface. Therefore, the high dense dislocations and transformation-induced plasticity (TRIP) effect as well as delamination toughening mechanism contributes to the excellent combination of strength and ductility at LNT. Our work provides experimental and microstructural insights into the deformation mechanisms of the ∼92%-cold-rolled 304L stainless steel during tensile deformation at RT and LNT. |
| first_indexed | 2024-03-11T15:06:19Z |
| format | Article |
| id | doaj.art-ea13b85cef47418387cc110d1dcf6501 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-11T15:06:19Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-ea13b85cef47418387cc110d1dcf65012023-10-30T06:03:15ZengElsevierJournal of Materials Research and Technology2238-78542023-09-012620012008Extraordinary strength and ductility of cold-rolled 304L stainless steel at cryogenic temperatureWei Jiang0Kerui Zhu1Jiansheng Li2Wenbo Qin3Jian Zhou4Zhumin Li5Kaixuan Gui6Yu Zhao7Qingzhong Mao8Banglun Wang9Anhui Key Laboratory of High-Performance Non-Ferrous Metal Materials, Anhui Polytechnic University, Wuhu, 241000, PR ChinaAnhui Key Laboratory of High-Performance Non-Ferrous Metal Materials, Anhui Polytechnic University, Wuhu, 241000, PR ChinaAnhui Key Laboratory of High-Performance Non-Ferrous Metal Materials, Anhui Polytechnic University, Wuhu, 241000, PR ChinaSchool of Engineering and Technology, China University of Geosciences (Beijing), Beijing, 100083, PR China; Corresponding author.Anhui Key Laboratory of High-Performance Non-Ferrous Metal Materials, Anhui Polytechnic University, Wuhu, 241000, PR ChinaAnhui Key Laboratory of High-Performance Non-Ferrous Metal Materials, Anhui Polytechnic University, Wuhu, 241000, PR ChinaAnhui Key Laboratory of High-Performance Non-Ferrous Metal Materials, Anhui Polytechnic University, Wuhu, 241000, PR ChinaAnhui Key Laboratory of High-Performance Non-Ferrous Metal Materials, Anhui Polytechnic University, Wuhu, 241000, PR ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR ChinaAnhui Key Laboratory of High-Performance Non-Ferrous Metal Materials, Anhui Polytechnic University, Wuhu, 241000, PR China; Corresponding author.In present work, tensile behaviors of cold-rolled 304L stainless steel were investigated at both room temperature (RT) and liquid nitrogen temperature (LNT). After cold-rolling with a thickness reduction of ∼92%, the 304L stainless steel exhibits an ultrahigh yield strength of 1787 MPa at the expense of ductility (1.06% of uniform elongation) at RT. At LNT, the yield strength (upper yield point of σyu = 2308.4 MPa and lower yield point of σyl = 1894.2 MPa) and uniform elongation (23%) increase greatly. Detailed microstructural investigation reveals that the cold-rolled 304L stainless steel comprises mainly of deformation induced martensite and high density of dislocations (9.06 ×1014 m−2), leading to a lack of dislocation storage capacity and thus brittle fracture at RT. While interrupt tests at LNT reveal a first increase and then decline in dislocation density with tensile strain, accompanied with phase transformation from austenite to martensite. The delamination events also occur, characterized by the multiple separated laminated ligaments observed at fracture surface. Therefore, the high dense dislocations and transformation-induced plasticity (TRIP) effect as well as delamination toughening mechanism contributes to the excellent combination of strength and ductility at LNT. Our work provides experimental and microstructural insights into the deformation mechanisms of the ∼92%-cold-rolled 304L stainless steel during tensile deformation at RT and LNT.http://www.sciencedirect.com/science/article/pii/S2238785423018616304L stainless steelCold-rollingMartensiteStrength and ductility |
| spellingShingle | Wei Jiang Kerui Zhu Jiansheng Li Wenbo Qin Jian Zhou Zhumin Li Kaixuan Gui Yu Zhao Qingzhong Mao Banglun Wang Extraordinary strength and ductility of cold-rolled 304L stainless steel at cryogenic temperature Journal of Materials Research and Technology 304L stainless steel Cold-rolling Martensite Strength and ductility |
| title | Extraordinary strength and ductility of cold-rolled 304L stainless steel at cryogenic temperature |
| title_full | Extraordinary strength and ductility of cold-rolled 304L stainless steel at cryogenic temperature |
| title_fullStr | Extraordinary strength and ductility of cold-rolled 304L stainless steel at cryogenic temperature |
| title_full_unstemmed | Extraordinary strength and ductility of cold-rolled 304L stainless steel at cryogenic temperature |
| title_short | Extraordinary strength and ductility of cold-rolled 304L stainless steel at cryogenic temperature |
| title_sort | extraordinary strength and ductility of cold rolled 304l stainless steel at cryogenic temperature |
| topic | 304L stainless steel Cold-rolling Martensite Strength and ductility |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423018616 |
| work_keys_str_mv | AT weijiang extraordinarystrengthandductilityofcoldrolled304lstainlesssteelatcryogenictemperature AT keruizhu extraordinarystrengthandductilityofcoldrolled304lstainlesssteelatcryogenictemperature AT jianshengli extraordinarystrengthandductilityofcoldrolled304lstainlesssteelatcryogenictemperature AT wenboqin extraordinarystrengthandductilityofcoldrolled304lstainlesssteelatcryogenictemperature AT jianzhou extraordinarystrengthandductilityofcoldrolled304lstainlesssteelatcryogenictemperature AT zhuminli extraordinarystrengthandductilityofcoldrolled304lstainlesssteelatcryogenictemperature AT kaixuangui extraordinarystrengthandductilityofcoldrolled304lstainlesssteelatcryogenictemperature AT yuzhao extraordinarystrengthandductilityofcoldrolled304lstainlesssteelatcryogenictemperature AT qingzhongmao extraordinarystrengthandductilityofcoldrolled304lstainlesssteelatcryogenictemperature AT banglunwang extraordinarystrengthandductilityofcoldrolled304lstainlesssteelatcryogenictemperature |