| Design and preliminary characterization of a novel carbide-free 9Cr-ODS martensitic steel | |
| Wang, Guangquan; Li, Yanfen; Zhang, Jiarong; Bao, Feiyang; Wei, Yan; Shi, Quanqiang; Shi, Xianbo; Shan, Yiyin; Yang, Ke | |
| 2020-11-01 | |
| Source Publication | FUSION ENGINEERING AND DESIGN
 |
| Volume | 160Pages:11824-11824 |
| Abstract | A novel 9Cr-ODS martensitic steel was designed for application in the advanced fusion reactors by reducing carbon content to an extremely low level to avoid the precipitation of M23C6 carbides and increasing manganese content to promote the martensite formation. The preliminary investigation was carried out by means of thermodynamics calculation, phase transformation measurement, microstructural observation and mechanical property testing. The results showed that the desired tempered martensitic structure and elimination of unstable M23C6 around grain/subgrain boundaries were achieved successfully in the fabricated steel with a final composition of Fe-9.25Cr-1.02W-1.05Mn-0.27Y(2)O(3)-0.012C (in wt%). Characterized by a homogeneous distribution of nano-size yttrium oxides with an ultrahigh density, absence of coarse M23C6, fine grains with high density dislocations, the designed 9Cr-ODS steel exhibited a relative good tensile properties after normalization and tempering treatments. Due to the slight decline of austenite temperatures (A(c1) and A(c3)), a tempering temperature higher than 800 degrees C should be avoided. |
| WOS ID | CCC:000588143300018 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/155664 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Wang, Guangquan,Li, Yanfen,Zhang, Jiarong,et al. Design and preliminary characterization of a novel carbide-free 9Cr-ODS martensitic steel[J]. FUSION ENGINEERING AND DESIGN,2020,160:11824-11824. |
| APA | Wang, Guangquan.,Li, Yanfen.,Zhang, Jiarong.,Bao, Feiyang.,Wei, Yan.,...&Yang, Ke.(2020).Design and preliminary characterization of a novel carbide-free 9Cr-ODS martensitic steel.FUSION ENGINEERING AND DESIGN,160,11824-11824. |
| MLA | Wang, Guangquan,et al."Design and preliminary characterization of a novel carbide-free 9Cr-ODS martensitic steel".FUSION ENGINEERING AND DESIGN 160(2020):11824-11824. |
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