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High-temperature Tensile Behavior in Coarse-grained and Fine-grained Nb-containing 25Cr-20Ni Austenitic Stainless Steel
Hu, Guodong1,2,3,4; Wang, Pei1; Li, Dianzhong1; Li, Yiyi1
Corresponding AuthorWang, Pei(pwang@imr.ac.cn)
2020-06-23
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages11
AbstractIn this study, tensile behavior of Nb-containing 25Cr-20Ni austenitic stainless steels composed of coarse or fine grains has been investigated at temperatures ranging from room temperature to 900 degrees C. Results show that the tensile strength of fine-grained specimens decreases faster than that of coarse-grained specimens, as the test temperature increases from 600 degrees C to 800 degrees C. The rapidly decreasing tensile strength is attributed to the enhanced dynamic recovery and recrystallization, because additional slip systems are activated, and cross-slipping is accelerated during deformation in fine-grained specimens. After tensile testing at 700-900 degrees C, sigma phases are formed concurrently with dynamic recrystallization in fine-grained specimens. The precipitation of sigma phases is induced by simultaneous recrystallization as the diffusion of alloying elements is accelerated during the recrystallization process. Additionally, the minimum ductility is observed in coarse-grained specimens at 800 degrees C, which is caused by the formation ofM(23)C(6)precipitates at the grain boundaries.
KeywordAustenitic stainless steels High-temperature tensile properties Grain size Precipitates
Funding OrganizationYouth Innovation Promotion Association, Chinese Academy of Sciences ; LiaoNing Revitalization Talents Program ; Guangdong Innovative and Entrepreneurial Research Team Program ; Guangdong Basic and Applied Basic Research Foundation
DOI10.1007/s40195-020-01076-2
Indexed BySCI
Language英语
Funding ProjectYouth Innovation Promotion Association, Chinese Academy of Sciences[2013126] ; LiaoNing Revitalization Talents Program[XLYC1807022] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06G025] ; Guangdong Basic and Applied Basic Research Foundation[2019A1515110886]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000542515900003
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139504
Collection中国科学院金属研究所
Corresponding AuthorWang, Pei
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
3.Ctr Excellence Adv Mat, Dongguan 523808, Peoples R China
4.Songshan Lake Lab Mat Sci, Dongguan 523808, Peoples R China
Recommended Citation
GB/T 7714
Hu, Guodong,Wang, Pei,Li, Dianzhong,et al. High-temperature Tensile Behavior in Coarse-grained and Fine-grained Nb-containing 25Cr-20Ni Austenitic Stainless Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020:11.
APA Hu, Guodong,Wang, Pei,Li, Dianzhong,&Li, Yiyi.(2020).High-temperature Tensile Behavior in Coarse-grained and Fine-grained Nb-containing 25Cr-20Ni Austenitic Stainless Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,11.
MLA Hu, Guodong,et al."High-temperature Tensile Behavior in Coarse-grained and Fine-grained Nb-containing 25Cr-20Ni Austenitic Stainless Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2020):11.
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