| 强脉冲离子束在金属中引起的应力波效应 |
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| 引用本文： | 颜莎,乐小云,赵渭江,韩宝玺,向伟,王宇钢,薛建明.强脉冲离子束在金属中引起的应力波效应[J].核技术,2003,26(3):217-220. |
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| 作者姓名： | 颜莎 乐小云 赵渭江 韩宝玺 向伟 王宇钢 薛建明 |
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| 作者单位： | 北京大学重离子物理研究所,北京,100871 |
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| 基金项目： | 国家自然科学基金(19975003)资助 |
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| 摘 要： | 金属在强脉冲离子束辐照及其后的快速冷却过程中所经历的应力过程是强脉冲离子束金属材料改性的最重要的机制之一。对应于这种过程，金属材料的微观结构和微硬度发生了改变。本文以45＃钢和纯铝为样品，将实验中测量到的不同强度的强脉冲辐照后样品微硬度和微观结构的变化与热力学计算所描述的热力学过程相对照，解释了出现微硬度双峰是由于应力波的形成和传播使然，并预言了由于应力波的在样品背面的反射，在较强能通量的强脉冲离子束辐照下样品背表面一定深度处也会出现微硬度增加的现象，该现象已被实验所证实。
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| 关 键 词： | 强脉冲离子束 金属 离子束辐照 改性 微硬度 应力波效应 |
| 修稿时间： | 2002年7月4日 |
Effects of stress wave in metal induced by intense pulsed ion beam |
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| YAN Sha,LE Xiaoyun,ZHAO Weijiang,HAN Baoxi XIANG Wei,WANG Yugang,XUE Jianming.Effects of stress wave in metal induced by intense pulsed ion beam[J].Nuclear Techniques,2003,26(3):217-220. |
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| Authors: | YAN Sha LE Xiaoyun ZHAO Weijiang HAN Baoxi XIANG Wei WANG Yugang XUE Jianming |
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| Abstract: | The stress process samples undergo during the intense pulse ion beam (IPIB) irradiation and sequent fast cooling is one of the most important effects of IPIB. It can change the microstructure and microhardness of the samples. By comparing thermodynamic calculation with the experimental results of microhardness measurements for 45# steel samples and pure Al samples which are irradiated by IPIB at different energy fluence, we suppose that the generation, propagation and reflection of stress wave should account for the phenomenon of multi-maximum of microhardness. The experimental results also proved our deduction about the microhardness maximum appearing at a certain depth near the back side surface. |
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| Keywords: | Intense pulsed ion beam Metal Stress Stress wave |
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