Influence of solid solution time on microstructure and precipitation strengthening of novel maraging steels
文献类型：期刊论文
| 作者 | Xu, T. Z.1; Wang, T.1; Wang, M. S.2; Zhang, S.1; Zhang, C. H.1; Wu, C. L.1; Sun, X. Y.3; Chen, H. T.3; Chen, J.3 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
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| 出版日期 | 2025 |
| 卷号 | 920页码:13 |
| 关键词 | Laser direct energy deposition Maraging steel Solution treatment Tensile strength Microhardness |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2024.147535 |
| 通讯作者 | Zhang, S.(songzhang_sy@163.com) |
| 英文摘要 | Effective subsequent heat treatment is crucial for achieving the desired microstructure and excellent mechanical properties in laser-deposited high-performance maraging steel. In this paper, we systematically investigate the synergistic relationship and tuning mechanism of different solution treatment times on the microstructureproperty synergy of new maraging steels fabricated using laser direct energy deposition (LDED). To determine the optimal heat treatment process, solution treatment was conducted at 840 degrees C for varying durations, followed by aging at 530 degrees C for 2 h to induce precipitation strengthening. The results indicate that after 2 h of solution treatment, the alloy exhibits optimal ductility with an elongation of 7.90 % +/- 0.15 %, attributed to the refinement of the martensitic matrix and precipitated phases, along with the formation of a small amount of residual austenite. When the solution treatment time is extended to 4 h, the alloy achieves its highest tensile strength, reaching 1958 +/- 24 MPa. However, the elongation decreases to 7.31 % +/- 0.12 % due to the coarsening of the martensite and secondary phase particles. After 6 h of solution treatment, significant coarsening and aggregation of the martensite and Fe2Mo intermetallic compounds markedly reduce the hardness, strength, and toughness of the alloy. By adjusting the solution treatment time, the size, morphology, and distribution of the martensitic matrix, Fe2Mo, and nanoscale precipitated phases play a critical role in the strengthening and fracture processes. Therefore, optimizing the precipitation behavior of the martensitic matrix and Fe2Mo intermetallic compounds through rational solution heat treatment is key to enhancing the mechanical properties of laser-deposited new maraging steels. |
| 资助项目 | National Key Research and Development Program of China[2023YFB4606605] ; General Project of Guangxi Natural Science Foundation[2023GXNSFAA026421] ; Shenyang Science and Technology[22-101-0-16] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001360419400001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Key Research and Development Program of China ; General Project of Guangxi Natural Science Foundation ; Shenyang Science and Technology |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhang, S. |
| 作者单位 | 1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shangyang, Peoples R China 3.Shenyang Dalu Laser Technol Co Ltd, Shenyang 110136, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, T. Z.,Wang, T.,Wang, M. S.,et al. Influence of solid solution time on microstructure and precipitation strengthening of novel maraging steels[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2025,920:13. |
| APA | Xu, T. Z..,Wang, T..,Wang, M. S..,Zhang, S..,Zhang, C. H..,...&Chen, J..(2025).Influence of solid solution time on microstructure and precipitation strengthening of novel maraging steels.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,920,13. |
| MLA | Xu, T. Z.,et al."Influence of solid solution time on microstructure and precipitation strengthening of novel maraging steels".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 920(2025):13. |
入库方式： OAI收割
来源：金属研究所
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