Effects of Nitrogen Content and Strain Rate on the Tensile Behavior of High-Nitrogen and Nickel-Free Austenitic Stainless Steel
The uniaxial tensile behaviors of Fe-19Cr-16Mn-2Mo-0.49N and Fe-18Cr-16Mn-2Mo-0.85N high-nitrogen and nickel-free austenitic stainless steels at two strain rates of 10<sup>−2</sup> s<sup>−1</sup> and 10<sup>−4</sup> s<sup>−1</sup> were comparatively in...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-01-01
|
| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/13/1/129 |
| _version_ | 1797444023939497984 |
|---|---|
| author | Feng Shi Xinyue Zhang Tianzeng Li Xianjun Guan Xiaowu Li Chunming Liu |
| author_facet | Feng Shi Xinyue Zhang Tianzeng Li Xianjun Guan Xiaowu Li Chunming Liu |
| author_sort | Feng Shi |
| collection | DOAJ |
| description | The uniaxial tensile behaviors of Fe-19Cr-16Mn-2Mo-0.49N and Fe-18Cr-16Mn-2Mo-0.85N high-nitrogen and nickel-free austenitic stainless steels at two strain rates of 10<sup>−2</sup> s<sup>−1</sup> and 10<sup>−4</sup> s<sup>−1</sup> were comparatively investigated. The related deformation microstructure was characterized and fracture mechanism was analyzed. The results show that the nitrogen content and strain rate both have significant effects on the tensile properties of the tested steels. As the strain rate is the same, the tested steel containing a higher nitrogen content has higher <i>R<sub>m</sub></i> and <i>R<sub>p</sub></i><sub>0.2</sub>. However, <i>R<sub>m</sub></i> is higher at a lower strain rate and <i>R<sub>p</sub></i><sub>0.2</sub> is higher at a higher strain rate in the case of the same nitrogen content. The tested steel with a lower nitrogen content (0.49 wt.%N) tensioned at a lower strain rate of 10<sup>−4</sup> s<sup>−1</sup> obtains the highest elongation, while the tested steel with a higher nitrogen content (0.85 wt.%N) tensioned at a higher strain rate of 10<sup>−2</sup> s<sup>−1</sup> has the lowest elongation. The tensile plastic deformation is mainly governed by slip and twinning, affected jointly by stacking fault energy and short-range order. Dislocation slip featured by planar slip bands and twin-like bands is the main deformation structure in the tested steel containing a higher nitrogen content (0.85 wt.%N) tensioned at a lower strain rate of 10<sup>−4</sup> s<sup>−1</sup>, whereas twinning deformation becomes more prominent with decreasing nitrogen content and increasing strain rate. |
| first_indexed | 2024-03-09T13:05:36Z |
| format | Article |
| id | doaj.art-4bb6b1e92a8841c49b9d05bd9722de94 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-09T13:05:36Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-4bb6b1e92a8841c49b9d05bd9722de942023-11-30T21:48:23ZengMDPI AGCrystals2073-43522023-01-0113112910.3390/cryst13010129Effects of Nitrogen Content and Strain Rate on the Tensile Behavior of High-Nitrogen and Nickel-Free Austenitic Stainless SteelFeng Shi0Xinyue Zhang1Tianzeng Li2Xianjun Guan3Xiaowu Li4Chunming Liu5Department of Materials Physics and Chemistry, School of Materials Science and Engineering, Northeastern University, Shenyang 110819, ChinaDepartment of Materials Physics and Chemistry, School of Materials Science and Engineering, Northeastern University, Shenyang 110819, ChinaDepartment of Materials Physics and Chemistry, School of Materials Science and Engineering, Northeastern University, Shenyang 110819, ChinaDepartment of Materials Physics and Chemistry, School of Materials Science and Engineering, Northeastern University, Shenyang 110819, ChinaDepartment of Materials Physics and Chemistry, School of Materials Science and Engineering, Northeastern University, Shenyang 110819, ChinaKey Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, ChinaThe uniaxial tensile behaviors of Fe-19Cr-16Mn-2Mo-0.49N and Fe-18Cr-16Mn-2Mo-0.85N high-nitrogen and nickel-free austenitic stainless steels at two strain rates of 10<sup>−2</sup> s<sup>−1</sup> and 10<sup>−4</sup> s<sup>−1</sup> were comparatively investigated. The related deformation microstructure was characterized and fracture mechanism was analyzed. The results show that the nitrogen content and strain rate both have significant effects on the tensile properties of the tested steels. As the strain rate is the same, the tested steel containing a higher nitrogen content has higher <i>R<sub>m</sub></i> and <i>R<sub>p</sub></i><sub>0.2</sub>. However, <i>R<sub>m</sub></i> is higher at a lower strain rate and <i>R<sub>p</sub></i><sub>0.2</sub> is higher at a higher strain rate in the case of the same nitrogen content. The tested steel with a lower nitrogen content (0.49 wt.%N) tensioned at a lower strain rate of 10<sup>−4</sup> s<sup>−1</sup> obtains the highest elongation, while the tested steel with a higher nitrogen content (0.85 wt.%N) tensioned at a higher strain rate of 10<sup>−2</sup> s<sup>−1</sup> has the lowest elongation. The tensile plastic deformation is mainly governed by slip and twinning, affected jointly by stacking fault energy and short-range order. Dislocation slip featured by planar slip bands and twin-like bands is the main deformation structure in the tested steel containing a higher nitrogen content (0.85 wt.%N) tensioned at a lower strain rate of 10<sup>−4</sup> s<sup>−1</sup>, whereas twinning deformation becomes more prominent with decreasing nitrogen content and increasing strain rate.https://www.mdpi.com/2073-4352/13/1/129austenitic stainless steelnitrogen contentstrain ratetensile propertystacking fault energyshort-range order |
| spellingShingle | Feng Shi Xinyue Zhang Tianzeng Li Xianjun Guan Xiaowu Li Chunming Liu Effects of Nitrogen Content and Strain Rate on the Tensile Behavior of High-Nitrogen and Nickel-Free Austenitic Stainless Steel Crystals austenitic stainless steel nitrogen content strain rate tensile property stacking fault energy short-range order |
| title | Effects of Nitrogen Content and Strain Rate on the Tensile Behavior of High-Nitrogen and Nickel-Free Austenitic Stainless Steel |
| title_full | Effects of Nitrogen Content and Strain Rate on the Tensile Behavior of High-Nitrogen and Nickel-Free Austenitic Stainless Steel |
| title_fullStr | Effects of Nitrogen Content and Strain Rate on the Tensile Behavior of High-Nitrogen and Nickel-Free Austenitic Stainless Steel |
| title_full_unstemmed | Effects of Nitrogen Content and Strain Rate on the Tensile Behavior of High-Nitrogen and Nickel-Free Austenitic Stainless Steel |
| title_short | Effects of Nitrogen Content and Strain Rate on the Tensile Behavior of High-Nitrogen and Nickel-Free Austenitic Stainless Steel |
| title_sort | effects of nitrogen content and strain rate on the tensile behavior of high nitrogen and nickel free austenitic stainless steel |
| topic | austenitic stainless steel nitrogen content strain rate tensile property stacking fault energy short-range order |
| url | https://www.mdpi.com/2073-4352/13/1/129 |
| work_keys_str_mv | AT fengshi effectsofnitrogencontentandstrainrateonthetensilebehaviorofhighnitrogenandnickelfreeausteniticstainlesssteel AT xinyuezhang effectsofnitrogencontentandstrainrateonthetensilebehaviorofhighnitrogenandnickelfreeausteniticstainlesssteel AT tianzengli effectsofnitrogencontentandstrainrateonthetensilebehaviorofhighnitrogenandnickelfreeausteniticstainlesssteel AT xianjunguan effectsofnitrogencontentandstrainrateonthetensilebehaviorofhighnitrogenandnickelfreeausteniticstainlesssteel AT xiaowuli effectsofnitrogencontentandstrainrateonthetensilebehaviorofhighnitrogenandnickelfreeausteniticstainlesssteel AT chunmingliu effectsofnitrogencontentandstrainrateonthetensilebehaviorofhighnitrogenandnickelfreeausteniticstainlesssteel |