| 结构钢动态断裂机理 |
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| 引用本文： | 杨常青.结构钢动态断裂机理[J].太原师范学院学报(自然科学版),2007,6(3):135-137. |
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| 作者姓名： | 杨常青 |
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| 作者单位： | 中北大学,山西,太原,030051 |
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| 摘 要： | 文章对结构钢材料（GrNiMoV钢）高速冲击下的断裂行为进行了研究，研究表明断裂过程是一损伤演化过程。得出了GrNiMoV钢断裂机理：一是在晶界三叉点处裂纹成核，沿细晶方向扩展，最终断裂；二是沿绝热剪切带的开裂。
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| 关 键 词： | 绝热剪切带 动态断裂 损伤 夹杂 晶界 |
| 文章编号： | 1672-2027（2007）03-0135-03 |
| 修稿时间： | 2006-12-28 |
The Structure Steel Dynamic State Splits Mechanism |
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| Yang Changqing.The Structure Steel Dynamic State Splits Mechanism[J].Journal of Taiyuan Normal University:Natural Science Edition,2007,6(3):135-137. |
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| Authors: | Yang Changqing |
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| Institution: | North University of China,Taiyuan 030051 ,China |
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| Abstract: | It investigated the fracture behaviours of armour steel(GrNiMoV steel) under high speed shock.It is shown by the results that the steel fracture are damage evolution process,and obtain its fracture mechnisms.GrNiMoV steel fracture mechanism:first,cross point of three grain-boundary is crack source,cracks propagate along small grain direction,lead to fracture;secondly,fracture through adiabatic shear band. |
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| Keywords: | adiabatic shear band dynamic fracture damage inclusion grain-boundary |
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