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Correlation of Microstructure Feature with Impact Fracture Behavior in a TMCP Processed High Strength Low Alloy Construction Steel
Zhu, Wen-Ting1; Cui, Jun-Jun2; Chen, Zhen-Ye1,3; Zhao, Yang4; Chen, Li-Qing1
Corresponding AuthorCui, Jun-Jun(junjun_cui@163.com) ; Chen, Li-Qing(lqchen@mail.neu.edu.cn)
2021-05-13
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages10
AbstractThe present article aims at elucidating the effect of thermo-mechanical controlled processing (TMCP), especially the finish cooling temperature, on microstructure and mechanical properties of high strength low alloy steels for developing superior low temperature toughness construction steel. The microstructural features were characterized by scanning electron microscope equipped with electron backscatter diffraction, and the mechanical behaviors in terms of tensile properties and impact toughness were analyzed in correlation with microstructural evolution. The results showed that the lower finish cooling temperature could lead to a considerable increase in impact toughness for this steel. A mixed microstructure was obtained by TMCP at lower finish cooling temperature, which contained much fine lath-like bainite with dot-shaped M/A constituent and less granular bainite and bainite ferrite. In this case, this steel possesses yield and ultimate tensile strengths of similar to 885 MPa and 1089 MPa, respectively, and a total elongation of similar to 15.3%, while it has a lower yield ratio of similar to 0.81. The superior impact toughness of similar to 89 J at -20 degrees C was obtained, and this was resulted from the multi-phase microstructure including grain refinement, preferred grain boundaries misorientation, fine lath-like bainite with dot-shaped M/A constituent.
KeywordHigh strength low alloy steel Thermo-mechanical controlled processing (TMCP) Finish cooling temperature Microstructure Mechanical properties Impact toughness
Funding OrganizationNational Natural Science Foundation of China ; Independent Project of State Key Laboratory of Rolling and Automation, Northeastern University ; Key Research and Development Program of Hebei Province of China ; Start-up Project of Doctor Scientific Research of Liaoning Province
DOI10.1007/s40195-021-01250-0
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51904071] ; Independent Project of State Key Laboratory of Rolling and Automation, Northeastern University[ZZ202001] ; Key Research and Development Program of Hebei Province of China[18211019D] ; Start-up Project of Doctor Scientific Research of Liaoning Province[2020-BS-271]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000650107400002
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/161818
Collection中国科学院金属研究所
Corresponding AuthorCui, Jun-Jun; Chen, Li-Qing
Affiliation1.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
3.Technol Res Inst HBIS, User Technol Dept, Shijiazhuang 050000, Peoples R China
4.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Wen-Ting,Cui, Jun-Jun,Chen, Zhen-Ye,et al. Correlation of Microstructure Feature with Impact Fracture Behavior in a TMCP Processed High Strength Low Alloy Construction Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2021:10.
APA Zhu, Wen-Ting,Cui, Jun-Jun,Chen, Zhen-Ye,Zhao, Yang,&Chen, Li-Qing.(2021).Correlation of Microstructure Feature with Impact Fracture Behavior in a TMCP Processed High Strength Low Alloy Construction Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,10.
MLA Zhu, Wen-Ting,et al."Correlation of Microstructure Feature with Impact Fracture Behavior in a TMCP Processed High Strength Low Alloy Construction Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2021):10.
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