Microstructure and Fracture Behavior of Special Multilayered Steel | |
Zhou, Xin2; Zhao, XiaoKang2; Cao, Rui2; Zhang, RuiHua1; Ding, Yun2; Zhang, XiaoBo2 | |
刊名 | MATERIALS |
2020-02 | |
卷号 | 13期号:3 |
关键词 | multilayered steel tensile strength bending strength Cr23C6 phases fracture crack |
DOI | 10.3390/ma13030789 |
英文摘要 | 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. |
资助项目 | National Nature Science Foundation of China[51761027][51675255] |
WOS研究方向 | Materials Science |
语种 | 英语 |
出版者 | MDPI |
WOS记录号 | WOS:000515503100296 |
状态 | 已发表 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/64157] |
专题 | 材料科学与工程学院 |
通讯作者 | Cao, Rui |
作者单位 | 1.China Iron & Steel Res Inst Grp, Beijing 100081, Peoples R China 2.Lanzhou Univ Technol, Dept Mat Sci & Engn, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China |
推荐引用方式 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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