| Evolution of Adiabatic Shear Band in Ultra-Fine-Grained Iron under Dynamic Shear Loading | |
Yuan FP(袁福平) ; Wu XL(武晓雷); Yuan, FP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
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| Source Publication | NANOMATERIALS BY SEVERE PLASTIC DEFORMATION: NANOSPD5, PTS 1 AND 2 |
| 2011 | |
| Pages | 761-765 |
| Conference Name | 5th International Conference on Nanomaterials by Severe Plastic Deformation |
| Conference Date | MAR 21-25, 2011 |
| Conference Place | Nanjing, PEOPLES R CHINA |
| Abstract | Ultra-fine-grained (UFG)/Nanocrystalline (NC) materials usually show reduced strain hardening and limited ductility due to formation of adiabatic shear band (ASB) under dynamic loading. In the present study, evolution of ASB in UFG Fe under dynamic shear loading was investigated. The UFG Fe was processed by equal-channel angular pressing (ECAP) via route B. After 6 passes, the grain size of UFG Fe reaches similar to 600 nm, as confirmed by means of Electron Back Scatter Diffraction (EBSD). Examination of micro-hardness and grain size of UFG Fe as a function of post-ECAP annealing temperature shows a transition from recovery to recrystallization at 500 degrees C. The high-strain-rate response of UFG Fe was characterized by hat-shaped specimen set-ups in Hopkinson bar experiments. The characteristics of ASB as a function of shear displacement, such as thickness of shear band and micro-hardness inside the shear band, were examined by SEM and Vickers micro-indentation respectively. |
| Keyword | Adiabatic Shear Band Ufg Fe Hat-shaped Specimen Ebsd Severe Plastic-deformation Nanocrystalline |
| WOS ID | WOS:000299234300126 |
| Department | LNM材料介观力学性能的表征 |
| Funding Organization | Nanjing Univ Sci & Technol |
| URL | 查看原文 |
| Indexed By | CPCI-S ; EI |
| Language | 英语 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/45243 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Yuan, FP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Yuan FP,Wu XL,Yuan, FP . Evolution of Adiabatic Shear Band in Ultra-Fine-Grained Iron under Dynamic Shear Loading[C]NANOMATERIALS BY SEVERE PLASTIC DEFORMATION: NANOSPD5, PTS 1 AND 2,2011:761-765. |
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| File Name/Size | DocType | Version | Access | License | ||
| Conf2011-008.pdf（2218KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
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