Investigation of microstructure and properties of TiN-strengthened mooring chain steel
As a high-strength low-alloy (HSLA) steel, 22MnCrNiMo steel is widely utilized in critical marine engineering applications, such as offshore oil platforms, wind power installations, and naval vessels. The incorporation of second-phase particles in steel can significantly enhance its mechanical prope...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025019735 |
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| author | Xiaojie Cui Xiaoxin Li Changqing Hu Dingguo Zhao Yan Liu Shuhuan Wang |
| author_facet | Xiaojie Cui Xiaoxin Li Changqing Hu Dingguo Zhao Yan Liu Shuhuan Wang |
| author_sort | Xiaojie Cui |
| collection | DOAJ |
| description | As a high-strength low-alloy (HSLA) steel, 22MnCrNiMo steel is widely utilized in critical marine engineering applications, such as offshore oil platforms, wind power installations, and naval vessels. The incorporation of second-phase particles in steel can significantly enhance its mechanical properties. This study investigates the effects of varied TiN additions (0–0.24 wt. %) on the microstructure, phase composition, and mechanical performance of 22MnCrNiMo steel fabricated via selective laser melting (SLM). Experimental results indicated that the optimal comprehensive properties were achieved at a TiN content of 0.24 wt. % under the following SLM parameters: laser power of 175 W, scanning speed of 800 mm/s, layer thickness of 30 μm, and hatch spacing of 110 μm. The SLM-fabricated sample exhibited ultimate tensile strength (UTS) of 1416 MPa, yield strength (YS) of 1338 MPa, elongation of 9.7 %, and Charpy impact energy of 228.4 J. These findings elucidate the underlying mechanisms of microstructural evolution and mechanical property enhancements in TiN-modified 22MnCrNiMo steel processed by SLM, providing valuable insights for optimizing the performance of HSLA steels in demanding marine environments. |
| format | Article |
| id | doaj-art-feaa9d2cabd646fea16ea1c3eaa0a2df |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-feaa9d2cabd646fea16ea1c3eaa0a2df2025-08-20T03:30:13ZengElsevierResults in Engineering2590-12302025-09-012710590210.1016/j.rineng.2025.105902Investigation of microstructure and properties of TiN-strengthened mooring chain steelXiaojie Cui0Xiaoxin Li1Changqing Hu2Dingguo Zhao3Yan Liu4Shuhuan Wang5North China University of Science and Technology, Tangshan, 063210, PR ChinaNorth China University of Science and Technology, Tangshan, 063210, PR ChinaCorresponding author.; North China University of Science and Technology, Tangshan, 063210, PR ChinaNorth China University of Science and Technology, Tangshan, 063210, PR ChinaNorth China University of Science and Technology, Tangshan, 063210, PR ChinaNorth China University of Science and Technology, Tangshan, 063210, PR ChinaAs a high-strength low-alloy (HSLA) steel, 22MnCrNiMo steel is widely utilized in critical marine engineering applications, such as offshore oil platforms, wind power installations, and naval vessels. The incorporation of second-phase particles in steel can significantly enhance its mechanical properties. This study investigates the effects of varied TiN additions (0–0.24 wt. %) on the microstructure, phase composition, and mechanical performance of 22MnCrNiMo steel fabricated via selective laser melting (SLM). Experimental results indicated that the optimal comprehensive properties were achieved at a TiN content of 0.24 wt. % under the following SLM parameters: laser power of 175 W, scanning speed of 800 mm/s, layer thickness of 30 μm, and hatch spacing of 110 μm. The SLM-fabricated sample exhibited ultimate tensile strength (UTS) of 1416 MPa, yield strength (YS) of 1338 MPa, elongation of 9.7 %, and Charpy impact energy of 228.4 J. These findings elucidate the underlying mechanisms of microstructural evolution and mechanical property enhancements in TiN-modified 22MnCrNiMo steel processed by SLM, providing valuable insights for optimizing the performance of HSLA steels in demanding marine environments.http://www.sciencedirect.com/science/article/pii/S2590123025019735Mooring chain steelSecond-phase strengtheningSelective laser melting (SLM)Microstructuremechanical properties |
| spellingShingle | Xiaojie Cui Xiaoxin Li Changqing Hu Dingguo Zhao Yan Liu Shuhuan Wang Investigation of microstructure and properties of TiN-strengthened mooring chain steel Results in Engineering Mooring chain steel Second-phase strengthening Selective laser melting (SLM) Microstructure mechanical properties |
| title | Investigation of microstructure and properties of TiN-strengthened mooring chain steel |
| title_full | Investigation of microstructure and properties of TiN-strengthened mooring chain steel |
| title_fullStr | Investigation of microstructure and properties of TiN-strengthened mooring chain steel |
| title_full_unstemmed | Investigation of microstructure and properties of TiN-strengthened mooring chain steel |
| title_short | Investigation of microstructure and properties of TiN-strengthened mooring chain steel |
| title_sort | investigation of microstructure and properties of tin strengthened mooring chain steel |
| topic | Mooring chain steel Second-phase strengthening Selective laser melting (SLM) Microstructure mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025019735 |
| work_keys_str_mv | AT xiaojiecui investigationofmicrostructureandpropertiesoftinstrengthenedmooringchainsteel AT xiaoxinli investigationofmicrostructureandpropertiesoftinstrengthenedmooringchainsteel AT changqinghu investigationofmicrostructureandpropertiesoftinstrengthenedmooringchainsteel AT dingguozhao investigationofmicrostructureandpropertiesoftinstrengthenedmooringchainsteel AT yanliu investigationofmicrostructureandpropertiesoftinstrengthenedmooringchainsteel AT shuhuanwang investigationofmicrostructureandpropertiesoftinstrengthenedmooringchainsteel |