| 应变速率对稀土镁合金动能吸收能力的影响 |
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| 引用本文： | 赵一生. 应变速率对稀土镁合金动能吸收能力的影响[J]. 兵器材料科学与工程, 2011, 34(3): 21-23. DOI: CNKI:33-1331/TJ.20110423.1343.005 |
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| 作者姓名： | 赵一生 |
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| 作者单位： | 深圳职业技术学院,广东,深圳,518055;中南大学材料科学与工程学院,湖南,长沙,410083 |
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| 摘 要： | 采用分离式Hopkinson压杆技术,对稀土镁合金T5态板材试样进行冲击压缩实验,获得不同应变速率下的应力应变曲线。对该曲线进行面积积分,研究应变速率对试样动能吸收能力的影响。结果表明,应变速率对稀土镁合金动能吸收能力影响显著,利用Origin7.0中的非线性拟合工具得到应变速率ε-与动能吸收能力Q呈现非线性关系,Q=-3.36+0.01328ε-+3.89×10-6ε-。
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| 关 键 词： | 应变速率 镁合金 动能 |
Effects of strain rate on the kinetic energy-absorbing capacity of rare earth magnesium alloy |
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| ZHAO Yisheng. Effects of strain rate on the kinetic energy-absorbing capacity of rare earth magnesium alloy[J]. Ordnance Material Science and Engineering, 2011, 34(3): 21-23. DOI: CNKI:33-1331/TJ.20110423.1343.005 |
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| Authors: | ZHAO Yisheng |
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| Affiliation: | ZHAO Yisheng1,2 (1.Shenzhen Polytechnic,Shenzhen 518055,China,2.School of Materials Science and Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | Rare earth magnesium alloy was investigated in dynamic impact test by split Hopkinson pressure bar (SHPB).The stress-strain curves of rare earth magnesium alloy corresponding to different strain rates were obtained.The effects of strain rate on the kinetic energy-absorbing capacity of rare earth magnesium alloy were investigated by integrating the curves of stress-strain.The results show that a linear relation between strain rate [ε]and kinetic energy-absorbing capacity Q of the alloy is identified as Q=-3.36+0.013 28[ε]+3.89×10-6[ε]. |
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| Keywords: | strain rate magnesium alloy kinetic energy |
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