| Microstructure and mechanical properties of a 2000 MPa Co-free maraging steel after aging at 753 K |
| Y. He; K. Yang; W. Sha; D. J. Cleland
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| 2004
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| 发表期刊 | Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
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| ISSN | 1073-5623
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| 卷号 | 35A期号:9页码:2747-2755 |
| 摘要 | The precipitation kinetics at the aging temperature of 753 K in a 2000 MPa grade Co-free maraging steel (Fe-18.9Ni-4.1Mo-1.9Ti, wt pet) has been studied. Under the peak-aged condition at 753 K, Ni(3)Ti precipitates of moderate size were uniformly distributed in the martensite matrix, leading to optimal combination of strength (2000 MPa of yield strength) and fracture toughness (70 MParootm). The ultra-high strength of the maraging steel subjected to long time aging at 753 K is attributed to the high resistance to coarsening of precipitates. The orientation relationship between martensite and Ni3Ti was observed as (011)(M)//(0001)(eta-Ni3Ti) and [111]M//[1120](eta-Ni3Ti). The Orowan mechanism is the dominant strengthening mechanism. |
| 部门归属 | chinese acad sci, inst met res, shenyang 110016, peoples r china. delft univ technol, mat sci lab, nl-2628 al delft, netherlands. queens univ belfast, met res grp, sch civil engn, belfast bt7 1nn, antrim, north ireland.;he, y (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;w.sha@qub.ac.uk
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| 关键词 | Precipitation Reactions
Phase Chemistry
Behavior
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| URL | 查看原文
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| WOS记录号 | WOS:000223678000022
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/35371
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
Y. He,K. Yang,W. Sha,et al. Microstructure and mechanical properties of a 2000 MPa Co-free maraging steel after aging at 753 K[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2004,35A(9):2747-2755.
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| APA |
Y. He,K. Yang,W. Sha,&D. J. Cleland.(2004).Microstructure and mechanical properties of a 2000 MPa Co-free maraging steel after aging at 753 K.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,35A(9),2747-2755.
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| MLA |
Y. He,et al."Microstructure and mechanical properties of a 2000 MPa Co-free maraging steel after aging at 753 K".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 35A.9(2004):2747-2755.
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