| High-cycle fatigue behavior of pure iron with gradient structures layer | |
Feng YP(冯岩鹏); Zhao SC(赵思聪); Xie JJ(谢季佳) ; Wu XL(武晓雷); Feng YP(冯岩鹏)
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| Source Publication | Advances in Functional and Electronic Materials |
| 2013 | |
| Pages | 387-392 |
| Conference Name | Chinese Materials Congress 2012, CMC 2012 |
| Conference Date | JUL 13-18, 2012 |
| Conference Place | Taiyuan, China |
| Abstract | In the present study, surface mechanical grinding treatment method was developed to induce a gradient nano-grained structures in commercial pure iron bar. The gradient structures and hardness were characterized by optical microscope and micro-indentation. Fatigue behaviors of samples in gradient nano-grained structures and in as-annealed state were examined at room temperature, and the fatigue fracture behavior was characterized with scanning electron microscope. The result showed that the thickness of deformation layer was about 300 μm, and the fatigue strength of the treated case was 252 MPa based on fatigue life of 107 cycles, but the fatigue strength of the as-annealed sample was 186 MPa. Fatigue cracks source of samples in gradient nano-grained structures gradually transformed into the internal of gradient structures layer, but cracks sources of as annealed samples were observed to be initiated at surface. |
| Department | LNM材料介观力学性能的表征 |
| ISBN | 978-3-03785-607-9 |
| URL | 查看原文 |
| Indexed By | EI |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/48292 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Feng YP(冯岩鹏) |
| Recommended Citation GB/T 7714 | Feng YP,Zhao SC,Xie JJ,et al. High-cycle fatigue behavior of pure iron with gradient structures layer[C]Advances in Functional and Electronic Materials,2013:387-392. |
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