| 表面纳米化对316L不锈钢低周疲劳性能的影响 |
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| 引用本文： | 韩同伟,钟蜀晖. 表面纳米化对316L不锈钢低周疲劳性能的影响[J]. 力学季刊, 2007, 28(1): 41-45 |
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| 作者姓名： | 韩同伟 钟蜀晖 |
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| 作者单位： | 同济大学,航空航天与力学学院,上海,200092;贵州大学,土木建筑工程学院,贵阳,550003 |
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| 基金项目： | 致谢：本项目实验部分前期工作在法国LASMIS实验室完成,特对LUJIAN教授的指导和帮助表示感谢. |
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| 摘 要： | 超声喷丸(USSP)处理工艺在316L不锈钢表面制备出了纳米表面晶层,对表面纳米化后和未表面纳米化的316L不锈钢试样进行对比拉拉低周疲劳试验,运用数理统计学的方法分析研究了表面纳米化处理对316L不锈钢的低周疲劳性能的影响,并就表面纳米化对疲劳性能的影响机理进行了初步分析探讨.研究结果表明,超声喷丸表面纳米化处理可以有效地提高316L不锈钢的低周疲劳寿命;超声喷丸处理在表面所形成的残余压应力、晶粒细化的纳米强化表层是疲劳寿命提高的主要原因.
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| 关 键 词： | 表面纳米化 超声喷丸 316L不锈钢 低周疲劳性能 |
| 文章编号： | 0254-0053（2007）01-41-5 |
| 收稿时间： | 2006-11-20 |
| 修稿时间： | 2006-11-20 |
Effect of Surface Nanocrystallization on Low Cycle Fatigue Properties of 316L Stainless Steel |
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| HAN Tong-wei,ZHONG Shu-hui. Effect of Surface Nanocrystallization on Low Cycle Fatigue Properties of 316L Stainless Steel[J]. Chinese Quarterly Mechanics, 2007, 28(1): 41-45 |
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| Authors: | HAN Tong-wei ZHONG Shu-hui |
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| Affiliation: | 1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092,China; 2. School of Civil Engineering and Architecture, Guizhou University, Guiyang 550003, China |
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| Abstract: | By means of ultrasonic shot peening(USSP) treatment,a nanostructured surface layer was formed on 316L stainless steel.Group contrastive low cycle tension-tension fatigue tests were carried out in 316L stainless steel before and after USSP treatment.The experimental data was analyzed by mathematical statistics method and the influence mechanism of fatigue properties affected by USSP treatment was also researched.The results indicate that USSP treatment can improve the low cycle fatigue life of 316L stainless steel effectively.The ultra-fine grained surface layer with residual compressive stress makes great contributions to the improvement in fatigue properties of 316L stainless steel. |
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| Keywords: | surface nanocrystallization ultrasonic shot peening treatment 316L stainless steel low cycle fatigue properties |
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