Email this article The Effect of Microphases on Elongation of Nanostructured Bainitic Steels
- Authors: Feng H.1, Kaiming W.1, Ting-ping H.1, Peter H.2, Rodionova I.3, Fu-cheng Z.4
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Affiliations:
- The State Key Laboratory of Refractories and Metallurgy, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, International Research Institute for Steel Technology, Wuhan University of Science and Technology
- Institute of Frontier Materials, Deakin University
- CMPC Center, I.P. Bardin Central Research Institute for Ferrous Metallurgy
- State Key Laboratory of Metastable Materials Science and Technology, National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University
- Issue: Vol 60, No 11-12 (2017)
- Pages: 1295-1300
- Section: Article
- URL: https://journal-vniispk.ru/0026-0894/article/view/239836
- DOI: https://doi.org/10.1007/s11015-017-0444-6
- ID: 239836
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Abstract
Nanostructured bainitic steel consisting of nanoscale bainitic-ferrite and retained austenite has been obtained by transforming at 200°C for 10 days. Despite the large volume fraction of retained austenite (29 vol.%) obtained, the total elongation of the nanostructured bainitic steel was relatively low. Microstructural characterization indicates that the high tensile strength (1975 MPa) resulted from nanoscale bainitic ferrite laths (~50 nm) with high dislocation density (7.4·1015 m–2) in the microstructure. The total elongation (5.8%) is attributed to the formation of Fe–C clusters and carbides in the microstructure and to the twinning (~20 nm in thickness) of retained austenite flakes.
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About the authors
H. Feng
The State Key Laboratory of Refractories and Metallurgy, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, International Research Institute for Steel Technology, Wuhan University of Science and Technology
Email: wukaiming@wust.edu.cn
China, Wuhan, 430081
W. Kaiming
The State Key Laboratory of Refractories and Metallurgy, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, International Research Institute for Steel Technology, Wuhan University of Science and Technology
Author for correspondence.
Email: wukaiming@wust.edu.cn
China, Wuhan, 430081
H. Ting-ping
The State Key Laboratory of Refractories and Metallurgy, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, International Research Institute for Steel Technology, Wuhan University of Science and Technology
Email: wukaiming@wust.edu.cn
China, Wuhan, 430081
H. Peter
Institute of Frontier Materials, Deakin University
Email: wukaiming@wust.edu.cn
Australia, Victoria, 3216
I. Rodionova
CMPC Center, I.P. Bardin Central Research Institute for Ferrous Metallurgy
Email: wukaiming@wust.edu.cn
Russian Federation, Moscow, 105005
Zh. Fu-cheng
State Key Laboratory of Metastable Materials Science and Technology, National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University
Email: wukaiming@wust.edu.cn
China, Qinhuangdao, 066004
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