Microstructure and Fracture Behavior of Special Multilayered Steel
Zhou, Xin1; Zhao, XiaoKang1; Cao, Rui1; Zhang, RuiHua2; Ding, Yun1; Zhang, XiaoBo1
2020-02-01
Source PublicationMATERIALS
Volume13Issue:3
Abstract

In this research, multilayered steel (MLS), which is composed of middle-carbon martensite steel, high-carbon martensite steel, and a pure Ni thin layer was obtained by the accumulative roll-bonding method. The microstructure and mechanical properties of the MLS were investigated by scanning electron microscopy (SEM), Vickers microhardness, tensile, and bending tests. In-situ SEM tensile tests were used to observe the crack initiation and propagation processes during the tensile loading. The results show that the ultimate tensile strength and bending strength of the MLS can reach 946 MPa and 3153 MPa, and the maximum elongation can reach 18%, which is related to the better combined quality of the interface. The middle and larger martensite layer (ML) becomes the weakest link of tensile fracture and interfacial delamination of the MLS during the tensile processes, because there are lots of large hard blocks Cr23C6 phases distributed in the middle thicker ML layer. Besides, the MLS can withstand larger bending deformation. When the MLS was bent to 180 degrees, neither macro-cracks in the outer side of the bending parts nor interfacial delamination can be found.

Keywordmultilayered steel tensile strength bending strength Cr23C6 phases fracture crack
DOI10.3390/ma13030789
Indexed BySCI ; SCIE ; EI
Language英语
Funding ProjectNational Nature Science Foundation of China[51761027][51675255]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000515503100296
PublisherMDPI
EI Accession Number20200808207642
EI KeywordsTensile strength
EI Classification Number422 Strength of Building Materials ; Test Equipment and Methods - 531.2 Metallography - 535.1 Metal Rolling - 931.1 Mechanics - 951 Materials Science
Source libraryCompendex
Classification code422 Strength of Building Materials; Test Equipment and Methods - 531.2 Metallography - 535.1 Metal Rolling - 931.1 Mechanics - 951 Materials Science
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://ir.lut.edu.cn/handle/2XXMBERH/64157
Collection材料科学与工程学院
Corresponding AuthorCao, Rui
Affiliation1.Lanzhou Univ Technol, Dept Mat Sci & Engn, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China;
2.China Iron & Steel Res Inst Grp, Beijing 100081, Peoples R China
First Author AffilicationLanzhou University of Technology
Corresponding Author AffilicationLanzhou University of Technology
First Signature AffilicationLanzhou University of Technology
Recommended Citation
GB/T 7714
Zhou, Xin,Zhao, XiaoKang,Cao, Rui,et al. Microstructure and Fracture Behavior of Special Multilayered Steel[J]. MATERIALS,2020,13(3).
APA Zhou, Xin,Zhao, XiaoKang,Cao, Rui,Zhang, RuiHua,Ding, Yun,&Zhang, XiaoBo.(2020).Microstructure and Fracture Behavior of Special Multilayered Steel.MATERIALS,13(3).
MLA Zhou, Xin,et al."Microstructure and Fracture Behavior of Special Multilayered Steel".MATERIALS 13.3(2020).
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