Dynamic mechanical properties of high nitrogen steel processed by wire and arc additive manufacturing
A thin-walled sample of homemade high nitrogen steel wire (nitrogen content of 0.7 wt%) was prepared by wire and arc additive manufacturing, and its dynamic mechanical properties in the strain rate range of 1177 s−1 to 5063 s−1 were measured by split-Hopkinson pressure bar tests. The results showed...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424029363 |
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| author | Meixia Qian Shida Song Yiming Guo Kehong Wang |
| author_facet | Meixia Qian Shida Song Yiming Guo Kehong Wang |
| author_sort | Meixia Qian |
| collection | DOAJ |
| description | A thin-walled sample of homemade high nitrogen steel wire (nitrogen content of 0.7 wt%) was prepared by wire and arc additive manufacturing, and its dynamic mechanical properties in the strain rate range of 1177 s−1 to 5063 s−1 were measured by split-Hopkinson pressure bar tests. The results showed that as-deposited high nitrogen steel had obvious strain rate strengthening effect, and its dynamic compressive properties in the deposition direction were better than that in the horizontal direction. Its dynamic compressive strength increased with the increase of strain rate (1303–1672 MPa), while the yield strength and strain hardening modulus increased first and then decreased. This is the result of the competition between the strain rate hardening and thermal softening effects caused by adiabatic temperature rise. Twinning was the main deformation mechanism of as-deposited high nitrogen steel under dynamic compression. The density of twins increased and the thickness decreased with the increase of strain rate. Twin intersections were observed in the twinning region and shears were found. |
| format | Article |
| id | doaj-art-5f11583ce93c4aa6ad5674f76c1f4275 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-5f11583ce93c4aa6ad5674f76c1f42752025-01-19T06:25:35ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013413401348Dynamic mechanical properties of high nitrogen steel processed by wire and arc additive manufacturingMeixia Qian0Shida Song1Yiming Guo2Kehong Wang3School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Ministry of Industry and Information Technology Key Laboratory of Controlled Arc Intelligent Additive Manufacturing Technology, Nanjing University of Science and Technology, Nanjing, 210094, ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Ministry of Industry and Information Technology Key Laboratory of Controlled Arc Intelligent Additive Manufacturing Technology, Nanjing University of Science and Technology, Nanjing, 210094, ChinaMinistry of Industry and Information Technology Key Laboratory of Controlled Arc Intelligent Additive Manufacturing Technology, Nanjing University of Science and Technology, Nanjing, 210094, China; School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Corresponding author. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Ministry of Industry and Information Technology Key Laboratory of Controlled Arc Intelligent Additive Manufacturing Technology, Nanjing University of Science and Technology, Nanjing, 210094, China; Corresponding author. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.A thin-walled sample of homemade high nitrogen steel wire (nitrogen content of 0.7 wt%) was prepared by wire and arc additive manufacturing, and its dynamic mechanical properties in the strain rate range of 1177 s−1 to 5063 s−1 were measured by split-Hopkinson pressure bar tests. The results showed that as-deposited high nitrogen steel had obvious strain rate strengthening effect, and its dynamic compressive properties in the deposition direction were better than that in the horizontal direction. Its dynamic compressive strength increased with the increase of strain rate (1303–1672 MPa), while the yield strength and strain hardening modulus increased first and then decreased. This is the result of the competition between the strain rate hardening and thermal softening effects caused by adiabatic temperature rise. Twinning was the main deformation mechanism of as-deposited high nitrogen steel under dynamic compression. The density of twins increased and the thickness decreased with the increase of strain rate. Twin intersections were observed in the twinning region and shears were found.http://www.sciencedirect.com/science/article/pii/S2238785424029363High nitrogen steelAdditive manufacturingSplit-Hopkinson pressure barDynamic deformation |
| spellingShingle | Meixia Qian Shida Song Yiming Guo Kehong Wang Dynamic mechanical properties of high nitrogen steel processed by wire and arc additive manufacturing Journal of Materials Research and Technology High nitrogen steel Additive manufacturing Split-Hopkinson pressure bar Dynamic deformation |
| title | Dynamic mechanical properties of high nitrogen steel processed by wire and arc additive manufacturing |
| title_full | Dynamic mechanical properties of high nitrogen steel processed by wire and arc additive manufacturing |
| title_fullStr | Dynamic mechanical properties of high nitrogen steel processed by wire and arc additive manufacturing |
| title_full_unstemmed | Dynamic mechanical properties of high nitrogen steel processed by wire and arc additive manufacturing |
| title_short | Dynamic mechanical properties of high nitrogen steel processed by wire and arc additive manufacturing |
| title_sort | dynamic mechanical properties of high nitrogen steel processed by wire and arc additive manufacturing |
| topic | High nitrogen steel Additive manufacturing Split-Hopkinson pressure bar Dynamic deformation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424029363 |
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