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| 添加微量Sc对Mg-3Li合金高应变率变形行为的影响 | |
| 引用本文： | 沙桂英,孙晓光,刘腾,朱宇宏,冯晓刚.添加微量Sc对Mg-3Li合金高应变率变形行为的影响[J].航空材料学报,2011,31(3):31-34. |
| 作者姓名： | 沙桂英 孙晓光 刘腾 朱宇宏 冯晓刚 |
| 作者单位： | 1. 沈阳航空航天大学,材料科学与工程学院,沈阳,110136 2. 哈尔滨工业大学,材料科学与工程学院,哈尔滨,150001 3. 沈阳航空航天大学,材料科学与工程学院,沈阳,110136;美国韦恩州立大学,机械工程系,密歇根州,底特律,48202 |
| 摘 要： | 利用Hopkinson压杆对Mg-3Li和Mg-3Li-1Sc合金进行了高应变率冲击实验,分析了添加少量Sc对Mg-3Li合金冲击变形行为及其应变率效应的影响.结果表明,在1350s～3000s-1应变率范围内,两种合金的动态应力-应变行为均表现出显著的应变率强化效应.但随应变率继续升高,合金的动态变形行为转为应变率弱... |
| 关 键 词： | Mg-Li-Sc合金 晶粒细化 应变率 变形 |
Effect of Sc Addition on Deformation Behavior of Mg-3Li Alloy at High Strain Rates |
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| SHA Gui-ying,SUN Xiao-guang,LIU Teng,ZHU Yu-hong,FENG Xiao-gang.Effect of Sc Addition on Deformation Behavior of Mg-3Li Alloy at High Strain Rates[J].Journal of Aeronautical Materials,2011,31(3):31-34. | |
| Authors: | SHA Gui-ying SUN Xiao-guang LIU Teng ZHU Yu-hong FENG Xiao-gang |
| Institution: | SHA Gui-ying1,SUN Xiao-guang2,LIU Teng1,3,ZHU Yu-hong1,FENG Xiao-gang1(1.School of Materials Science and Engineering,Shenyang Aerospace University,Shenyang 110136,China,2.School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,3.Department of Mechanical Engineering,Wayne State University,Detroit,MI 48202,USA) |
| Abstract: | The impact experiment for Mg-3Li and Mg-3Li-1Sc alloys was conducted using the Split Hopkinson Pressure Bar(SHPB) at high strain rates.The effect of minor Scandium on the impact deformation behavior and strain rate effects of Mg-3Li alloy were analyzed.The results show that the dynamic stress-strain behaviors of both alloys exhibit evident positive strain rate effect at strain rates from 1350s-1 to 3000s-1.However,the dynamic deformation behaviors of both alloys change to negative strain rate effect with th... |
| Keywords: | Mg-Li-Sc alloy grain refinement strain rate deformation |
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