Microstructure and mechanical properties of an oxide-dispersed ultrafine-grained maraging steel
A novel oxide-dispersed strengthened T250 maraging steel (ODS-T250 steel) was prepared by mechanical ball milling followed by hot isostatic pressing. Martensitic transformation behavior, ultrafine-grained martensite microstructure and tensile properties of the ODS-T250 steel were compared to its oxi...
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Elsevier
2025-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425016382 |
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| author | Bowen Shi Tianyi Zeng Nairong Tao Xianbo Shi Jiarong Zhang Wei Wang Sybrand van der Zwaag Yiyin Shan Wei Yan |
| author_facet | Bowen Shi Tianyi Zeng Nairong Tao Xianbo Shi Jiarong Zhang Wei Wang Sybrand van der Zwaag Yiyin Shan Wei Yan |
| author_sort | Bowen Shi |
| collection | DOAJ |
| description | A novel oxide-dispersed strengthened T250 maraging steel (ODS-T250 steel) was prepared by mechanical ball milling followed by hot isostatic pressing. Martensitic transformation behavior, ultrafine-grained martensite microstructure and tensile properties of the ODS-T250 steel were compared to its oxide-free counterpart (T250 steel). The results indicated that ODS-T250 steel exhibited excellent microstructural thermal stability, maintaining an effective grain size of 0.348 μm even after quenching from 1200 °C, whereas T250 steel exhibited a much larger grain size of 5.473 μm. After quenching, the ODS-T250 steel showed significantly distinct variant selectivity, and its martensite morphology was unprecedented equiaxed structure rather than typical lath-type. Statistical analysis revealed that there was only a single variant formed when the prior austenite grain size (PAGS) was below 0.43 μm. Moreover, the martensite start (Ms) temperature of ODS-T250 steel was lower than the T250 steel due to its ultrafine PAGS and the dispersed oxide particles. The refinement of PAGS and the presence of oxide particles led to a simultaneous improvement in both strength and ductility of ODS-T250 steel. |
| format | Article |
| id | doaj-art-cab78be795d04f9caa60ec3a3124cd3d |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-cab78be795d04f9caa60ec3a3124cd3d2025-08-20T03:31:28ZengElsevierJournal of Materials Research and Technology2238-78542025-07-01373075308810.1016/j.jmrt.2025.06.216Microstructure and mechanical properties of an oxide-dispersed ultrafine-grained maraging steelBowen Shi0Tianyi Zeng1Nairong Tao2Xianbo Shi3Jiarong Zhang4Wei Wang5Sybrand van der Zwaag6Yiyin Shan7Wei Yan8School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China; Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, ChinaSchool of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou, 412007, ChinaShenyang National Laboratory of Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, ChinaShi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, ChinaShi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, ChinaShi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, ChinaFaculty of Aerospace Engineering, Delft University of Technology, Delft, NetherlandsShi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, ChinaShi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China; Corresponding author. Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China.A novel oxide-dispersed strengthened T250 maraging steel (ODS-T250 steel) was prepared by mechanical ball milling followed by hot isostatic pressing. Martensitic transformation behavior, ultrafine-grained martensite microstructure and tensile properties of the ODS-T250 steel were compared to its oxide-free counterpart (T250 steel). The results indicated that ODS-T250 steel exhibited excellent microstructural thermal stability, maintaining an effective grain size of 0.348 μm even after quenching from 1200 °C, whereas T250 steel exhibited a much larger grain size of 5.473 μm. After quenching, the ODS-T250 steel showed significantly distinct variant selectivity, and its martensite morphology was unprecedented equiaxed structure rather than typical lath-type. Statistical analysis revealed that there was only a single variant formed when the prior austenite grain size (PAGS) was below 0.43 μm. Moreover, the martensite start (Ms) temperature of ODS-T250 steel was lower than the T250 steel due to its ultrafine PAGS and the dispersed oxide particles. The refinement of PAGS and the presence of oxide particles led to a simultaneous improvement in both strength and ductility of ODS-T250 steel.http://www.sciencedirect.com/science/article/pii/S2238785425016382Maraging steelUltrafine grainsNano-oxidesVariant selectionMartensitic transformation |
| spellingShingle | Bowen Shi Tianyi Zeng Nairong Tao Xianbo Shi Jiarong Zhang Wei Wang Sybrand van der Zwaag Yiyin Shan Wei Yan Microstructure and mechanical properties of an oxide-dispersed ultrafine-grained maraging steel Journal of Materials Research and Technology Maraging steel Ultrafine grains Nano-oxides Variant selection Martensitic transformation |
| title | Microstructure and mechanical properties of an oxide-dispersed ultrafine-grained maraging steel |
| title_full | Microstructure and mechanical properties of an oxide-dispersed ultrafine-grained maraging steel |
| title_fullStr | Microstructure and mechanical properties of an oxide-dispersed ultrafine-grained maraging steel |
| title_full_unstemmed | Microstructure and mechanical properties of an oxide-dispersed ultrafine-grained maraging steel |
| title_short | Microstructure and mechanical properties of an oxide-dispersed ultrafine-grained maraging steel |
| title_sort | microstructure and mechanical properties of an oxide dispersed ultrafine grained maraging steel |
| topic | Maraging steel Ultrafine grains Nano-oxides Variant selection Martensitic transformation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425016382 |
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