| 铝-锂合金动态扭转实验研究 |
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| 引用本文： | 田兰桥 Sturt,C.铝-锂合金动态扭转实验研究[J].爆炸与冲击,1992,12(1):68-76. |
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| 作者姓名： | 田兰桥 Sturt C |
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| 作者单位： | 中国科学院力学研究所，英国里丁大学，英国里丁大学 北京 100080 |
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| 摘 要： | 利用霍普金森扭杆（Torsional Split-Hopkinson Bar）技术对三种不同成份或状态的铝-锂合金材料的动态应力-应变-应变率关系进行了实验测定。应变率范围由1300s-1到2600s-1,研究表明随着应变率的提高,三种不同成份或状态的铝-锂合金材料的韧性和强度都有不同程度的提高。对剪切带的初步观察发现,随应变率的增加,剪切带有变窄的趋势。
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| 关 键 词： | 铝－锂合金 扭转实验 霍甫金森杆 |
STUDY ON DYNAMIC TORSIONAL TEST OF Al-Li ALLOY |
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| Tian Lanqiao.STUDY ON DYNAMIC TORSIONAL TEST OF Al-Li ALLOY[J].Explosion and Shock Waves,1992,12(1):68-76. |
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| Authors: | Tian Lanqiao |
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| Abstract: | The dynamic shearing strength of Al-Li alloy under different strain rate was determined useing split-Hopkinson torsional bar (SHTB) facility with tubular specimens and the frac-tographyic observations were carried out with SEM. Besides,the shear bands were also measured. The results show that the toughness increases and the shear band narrows with the increasing of strain rate. |
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| Keywords: | Al-Li alloy split-Hopkinson torsional bar dynamic stress-strain relation shear band |
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