| Effect of Carbon Reduction on the Toughness of 9CrWVTaN Steels |
| W. Yan; P. Hu; L. F. Deng; W. Wang; W. Sha; Y. Y. Shan; K. Yang
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| 2012
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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 | 43A期号:6页码:1921-1933 |
| 摘要 | Nitride-strengthened, reduced activation, martensitic steel is anticipated to have higher creep strength because of the remarkable thermal stability of nitrides. Two nitride-strengthened, reduced activation martensitic steels with different carbon contents were prepared to investigate the microstructure and mechanical property changes with decreasing carbon content. It has been found that both steels had the microstructure of full martensite with fine nitrides dispersed homogeneously in the matrix and displayed extremely high strength but poor toughness. Compared with the steel with low carbon content (0.005 pct in wt pct), the steel with high carbon content (0.012 pct in wt pct) had not only the higher strength but also the higher impact toughness and grain coarsening temperature, which was related to the carbon content. On the one hand, carbon reduction led to Ta-rich inclusions; on the other hand, the grain grew larger when normalized at high temperature because of the absence of Ta carbonitrides, which would decrease impact toughness. The complicated Al2O3 inclusions in the two steels have been revealed to be responsible for the initiated cleavage fracture by acting as the critical cracks. |
| 部门归属 | [yan, wei; hu, ping; deng, lifen; wang, wei; shan, yiyin; yang, ke] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china. [hu, ping; deng, lifen] chinese acad sci, grad sch, beijing 100049, peoples r china. [sha, wei] queens univ belfast, sch planning architecture & civil engn, belfast bt9 5ag, antrim, north ireland.;shan, yy (reprint author), chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china.;yyshan@imr.ac.cn
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| 关键词 | Activation Ferritic/martensitic Steels
Research-and-development
v
Stainless-steels
Mechanical-properties
Martensitic Steels
Ods-eurofer
Ferritic Steels
Creep-behavior
9cr Steel
Microstructure
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| URL | 查看原文
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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/321006/60386
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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 |
W. Yan,P. Hu,L. F. Deng,et al. Effect of Carbon Reduction on the Toughness of 9CrWVTaN Steels[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2012,43A(6):1921-1933.
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| APA |
W. Yan.,P. Hu.,L. F. Deng.,W. Wang.,W. Sha.,...&K. Yang.(2012).Effect of Carbon Reduction on the Toughness of 9CrWVTaN Steels.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,43A(6),1921-1933.
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| MLA |
W. Yan,et al."Effect of Carbon Reduction on the Toughness of 9CrWVTaN Steels".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 43A.6(2012):1921-1933.
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