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Effect of Niobium Content on the Microstructure and Tensile Properties of 15Cr-15Ni Titanium-Modified Austenitic Stainless Steel Used as Core Components in Liquid Metal-Cooled Fast Reactors (LMFR)
Qiao Yufei1; Chen Sihan2; Ren Yuanyuan3; Liang Tian2; Liu Chunming1; Ma Yingche2; Liu Kui2
Corresponding AuthorLiang Tian(tliang@imr.ac.cn)
2021-11-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume50Issue:11Pages:4079-4088
AbstractThis study investigated the precipitated phases and tensile properties of titanium-stabilized 15Cr-15Ni austenitic stainless steel with different niobium contents (0wt%, 0.2wt%, 0.46wt%). The types, morphology and distribution of precipitated phases after solution treatment and aging treatment were characterized by OM, SEM, and TEM. Results show that Ti and Mo are partly replaced by Nb in (Ti,Mo)C phase to form a Nb-rich (Nb,Ti)C phase in 0.21wt% Nb and 0.46wt% Nb alloys. What's more, the increase of Nb content refines austenite matrix structure after solution treatment. The main phases in the alloy after aging at 850 degrees C for 1000 h are Sigma and MC carbides. The increase of Nb content not only promotes the enrichment of Nb and Mo in Sigma phase, but also makes the phase become finer and more dispersed. The mechanical results of the alloy with Nb in the range of 0wt%, 0.2wt%, 0.46wt% show that Nb content has little effect on the tensile properties of the alloy at room temperature and 650 degrees C. In aged samples, Sigma phases are promoted by the increasing content of Nb, but these precipitated phases do not show obvious effect on the tensile properties.
Keywordliquid metal-cooled fast reactors (LMFR) cladding material austenitic stainless steel Sigma phase tensile property
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000727522800037
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/167590
Collection中国科学院金属研究所
Corresponding AuthorLiang Tian
Affiliation1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
3.China Inst Atom Energy, Beijing 102413, Peoples R China
Recommended Citation
GB/T 7714
Qiao Yufei,Chen Sihan,Ren Yuanyuan,et al. Effect of Niobium Content on the Microstructure and Tensile Properties of 15Cr-15Ni Titanium-Modified Austenitic Stainless Steel Used as Core Components in Liquid Metal-Cooled Fast Reactors (LMFR)[J]. RARE METAL MATERIALS AND ENGINEERING,2021,50(11):4079-4088.
APA Qiao Yufei.,Chen Sihan.,Ren Yuanyuan.,Liang Tian.,Liu Chunming.,...&Liu Kui.(2021).Effect of Niobium Content on the Microstructure and Tensile Properties of 15Cr-15Ni Titanium-Modified Austenitic Stainless Steel Used as Core Components in Liquid Metal-Cooled Fast Reactors (LMFR).RARE METAL MATERIALS AND ENGINEERING,50(11),4079-4088.
MLA Qiao Yufei,et al."Effect of Niobium Content on the Microstructure and Tensile Properties of 15Cr-15Ni Titanium-Modified Austenitic Stainless Steel Used as Core Components in Liquid Metal-Cooled Fast Reactors (LMFR)".RARE METAL MATERIALS AND ENGINEERING 50.11(2021):4079-4088.
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