| 爆炸加载制备纳米晶铜实验研究 |
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| 引用本文： | 王金相,张晓立,王经涛,赵铮. 爆炸加载制备纳米晶铜实验研究[J]. 兵工学报, 2010, 0(Z1) |
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| 作者姓名： | 王金相 张晓立 王经涛 赵铮 |
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| 作者单位： | 南京理工大学瞬态物理国家重点实验室;南京理工大学材料科学与工程系;南京理工大学动力工程学院; |
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| 基金项目： | 国家自然科学基金(10902054,10802038); 弹道国防科技重点实验室基金(9140C3008030806); 新教师基金(200802881013); 南京市科技计划项目(200704019); 南京理工大学卓越计划“紫金之星”项目资助 |
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| 摘 要： | 采用爆炸动态加载使粗晶铜发生高应变率塑性大变形的方法制备出了纳米晶铜。分析了冲击飞板动能对铜的应变、晶粒细化程度的影响,初步讨论了爆炸加载下纳米晶铜的晶粒细化机制。结果表明:采用爆炸加载法可制备出纳米晶铜,晶粒度范围为26.1~31.4 nm;冲击动能和试验应变的增大更有利于晶粒细化;位错和孪生是晶粒得以细化的主要机制。
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| 关 键 词： | 爆炸力学 爆炸加载 纳米晶铜 晶粒细化 孪晶 位错 |
Experimental Research on Preparation of Nano-crystalline Copper by Explosive Loading |
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| WANG Jin-xiang,ZHANG Xiao-li,WANG Jing-tao,ZHAO Zheng. Experimental Research on Preparation of Nano-crystalline Copper by Explosive Loading[J]. Acta Armamentarii, 2010, 0(Z1) |
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| Authors: | WANG Jin-xiang ZHANG Xiao-li WANG Jing-tao ZHAO Zheng |
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| Affiliation: | WANG Jin-xiang1,ZHANG Xiao-li1,WANG Jing-tao2,ZHAO Zheng3(1.National Key Laboratory of Science and Technology on Ballistics,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China,2.Department of Material Science and Engineering,3.School of Power Engineering,China) |
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| Abstract: | By using the explosive loading on coarse-grain copper to make it generate severe plastic deformation at high stain rate,the nano-crystalline copper was prepared successfully.The effects of the kinetic energy of impact plate on the strain of copper and the degree of grain-refining were analyzed.The mechanism of grain-refining under the explosive loading was discussed primarily.The results show that the feasibility of the explosive loading method to prepare the nano-crystalline copper with the grains sized fr... |
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| Keywords: | explosion mechanics explosive loading nano-crystalline copper grain-refining twin crystal dislocation |
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