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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 PublicationFUSION ENGINEERING AND DESIGN
Volume160Pages:11824-11824
AbstractA 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 IDCCC:000588143300018
Citation statistics
Document Type期刊论文
Identifierhttp://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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