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Strain gradient induced grain refinement far below the size limit in a low carbon hypoeutectoid steel (0.19 wt% C) via pipe inner surface grinding treatment
Li, Wenqiang1,2; Zhao, Yiming3; Liu, Ning4; Li, Changji3; Ren, Ruiming5; Cai, Dayong6; Zhang, Hongwang1
Corresponding AuthorCai, Dayong(cdy@ysu.edu.cn) ; Zhang, Hongwang(hwzhang@ysu.edu.cn)
2021-07-10
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume78Pages:155-169
AbstractA low carbon hypoeutectoid steel (0.19 wt% C) with proeutectoid ferrite and pearlite dual-components was subjected to surface plastic deformation via pipe inner surface grinding (PISG) at room temperature. The deformation microstructures for each component were systematically characterized along depth, and the patterns of structural evolution toward nanometer regime as well as the governing parameters were addressed. Proeutectoid ferrite grains were refined down to 17 nm, and the pattern covering a length scale of 4-5 orders of magnitude from micron- to nanometer-scale follows: formation of cellular dislocation structure (CDS), elongated dislocation structure (EDS), ultrafine lamellar structure (UFL) and finally the nanolaminated structure (NL). The pearlite experiences the deformation and refinement, and finally the transforming the ultrafine pearlite (UFP) into nanolaminated pearlite (NLP) with the ferrite lamellae as thin as 20 nm. Refinement for both UFL (UFP) and NL (NLP) can be realized via forming novel extended boundaries within ferrite lamellae. A critical lattice curvature of similar to 2.8. is required for forming such extended boundary, corresponding to a minimum strain gradient of 0.25 mu m(-1) for a 100 nm-thick lamella. Refinement below size limit (expressed by lamellar thickness d(T) in nm) is correlated with the strain gradient (chi, in mu m(-1)) by: d(T) = 12.5/chi. Refinement contributions from strain gradient caused by PISG processing and material heterogeneity were discussed. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordStrain gradient Grain refinement Size limit Low carbon hypoeutectoid steel Pipe inner surface grinding
Funding OrganizationHundred Outstanding Creative Talents Projects in Hebei University, China ; Project Program of Heavy Machinery Collaborative Innovation Center, China ; National Natural Science Foundation of China
DOI10.1016/j.jmst.2020.10.068
Indexed BySCI
Language英语
Funding ProjectHundred Outstanding Creative Talents Projects in Hebei University, China ; Project Program of Heavy Machinery Collaborative Innovation Center, China ; National Natural Science Foundation of China[51171182]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000652023600015
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/161222
Collection中国科学院金属研究所
Corresponding AuthorCai, Dayong; Zhang, Hongwang
Affiliation1.Yanshan Univ, Coll Mech Engn, Natl Engn Res Ctr Equipment & Technol Cold Strip, Qinhuangdao 066004, Hebei, Peoples R China
2.Yanshan Univ, Natl Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
4.Yanshan Univ, Liren Coll, Qinhuangdao 066004, Hebei, Peoples R China
5.Dalian Jiaotong Univ, Sch Mat Sci & Engn, Dalian 116028, Peoples R China
6.Qinhuangdao Vocat & Tech Coll, Qinhuangdao 066100, Hebei, Peoples R China
Recommended Citation
GB/T 7714
Li, Wenqiang,Zhao, Yiming,Liu, Ning,et al. Strain gradient induced grain refinement far below the size limit in a low carbon hypoeutectoid steel (0.19 wt% C) via pipe inner surface grinding treatment[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,78:155-169.
APA Li, Wenqiang.,Zhao, Yiming.,Liu, Ning.,Li, Changji.,Ren, Ruiming.,...&Zhang, Hongwang.(2021).Strain gradient induced grain refinement far below the size limit in a low carbon hypoeutectoid steel (0.19 wt% C) via pipe inner surface grinding treatment.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,78,155-169.
MLA Li, Wenqiang,et al."Strain gradient induced grain refinement far below the size limit in a low carbon hypoeutectoid steel (0.19 wt% C) via pipe inner surface grinding treatment".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 78(2021):155-169.
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