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Microstructure and Mechanical Properties of an Austenitic Heat-Resistant Steel after Service at 570 degrees C and 25.4 MPa for 18 Years
Yang, Xu1; Yu, Chengwei2; Yang, Xisheng1; Yan, Kai1; Qian, Gong1; Wang, Baochen3; Yan, Wei4; Shi, Xianbo4
Corresponding AuthorYang, Xu(592782553@qq.com)
2021-01-05
Source PublicationJOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN1059-9495
Pages9
AbstractMicrostructure and mechanical properties of an austenitic heat-resistant steel (12Cr18Ni12Ti) serviced in a supercritical power plant at 570 degrees C/25.4 MPa for 160,000 h were investigated. The results show that the hardness and the tensile strength did not decrease; however, the impact toughness was remarkably reduced. The TiC precipitate shows excellent thermostability; for example, it hardly grew up, and no big M23C6 carbides were found. However, large Fe, Cr-rich sigma-phase was doomed to precipitate along grain boundary, which should be responsible for the reduced toughness. The growth of sigma-phase was observed to have an interaction with the preexisted carbides.
Keyword12Cr18Ni12Ti austenitic stainless steel long-term service mechanical properties microstructure
DOI10.1007/s11665-020-05420-6
Indexed BySCI
Language英语
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000605155400042
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/158885
Collection中国科学院金属研究所
Corresponding AuthorYang, Xu
Affiliation1.China Special Equipment Inspect & Res Inst, Beijing 100029, Peoples R China
2.Tianjin Guohua Panshan Power Generat Co Ltd, Tianjin 301900, Peoples R China
3.Guohua Elect Power Branch China Shenhua Energy Co, Beijing 100025, Peoples R China
4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Yang, Xu,Yu, Chengwei,Yang, Xisheng,et al. Microstructure and Mechanical Properties of an Austenitic Heat-Resistant Steel after Service at 570 degrees C and 25.4 MPa for 18 Years[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2021:9.
APA Yang, Xu.,Yu, Chengwei.,Yang, Xisheng.,Yan, Kai.,Qian, Gong.,...&Shi, Xianbo.(2021).Microstructure and Mechanical Properties of an Austenitic Heat-Resistant Steel after Service at 570 degrees C and 25.4 MPa for 18 Years.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,9.
MLA Yang, Xu,et al."Microstructure and Mechanical Properties of an Austenitic Heat-Resistant Steel after Service at 570 degrees C and 25.4 MPa for 18 Years".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2021):9.
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