| 高密度合金W-Ni-Mn的绝热剪切破坏研究 |
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| 引用本文： | 李云凯, 解峰, 王富耻, 李树奎. 高密度合金W-Ni-Mn的绝热剪切破坏研究[J]. 爆炸与冲击, 2007, 27(2): 185-189. doi: 10.11883/1001-1455(2007)02-0185-05 |
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| 作者姓名： | 李云凯 解峰 王富耻 李树奎 |
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| 作者单位： | 北京理工大学材料科学与工程学院，北京 100081 |
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| 摘 要： | 应用分离式霍普金森压杆对90W-Ni-Mn合金的圆柱体试样进行了动态压缩实验，并对试样的剖面和断面进行了扫描电镜观察，结合试样的真实应力-应变曲线，发现合金在真实应变为约45％时出现明显的绝热剪切现象，随着冲击力的进一步增加，试样发生剪切断裂。可见90W-Ni-Mn合金较传统钨合金更易出现剪切带，具有更高的绝热剪切敏感性。
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| 关 键 词： | 固体力学 绝热剪切带 分离式霍普金森压杆 高密度钨合金 |
| 文章编号： | 1001-1455(2007)02-0185-05 |
| 修稿时间： | 2005-11-07 |
Study on adiabatic shear failure of W-Ni-Mn heavy alloy |
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| LI Yun-kai, XIE Feng, WANG Fu-chi, LI Shu-kui. Study on adiabatic shear failure of W-Ni-Mn heavy alloy[J]. Explosion And Shock Waves, 2007, 27(2): 185-189. doi: 10.11883/1001-1455(2007)02-0185-05 |
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| Authors: | LI Yun-kai XIE Feng WANG Fu-chi LI Shu-kui |
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| Affiliation: | School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Dynamic compression tests of W-Ni-Mn alloy were performed,using cylindrical specimens 5 mm both in diameter and long with the split Hopkinson pressure bar(SHPB) technique.Both sections and fracture surfaces of specimens were observed with SEM.Connected with true stress-strain curves of specimens,it was found that adiabatic shear bands in sections of specimens appeared distinctly when specimens took place about 45% true strain.W-Ni-Mn alloy is easier to come into being adiabatic shear band(ASB) than the conventional tungsten heavy alloy,and has higher adiabatic shear sensitivity. |
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| Keywords: | solid mechanics adiabatic shear band(ASB) split Hopkinson bar tungsten heavy alloy |
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