| 两种线分维及线分维与面分维间关系 |
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| 引用本文： | 吕铮,龙起易.两种线分维及线分维与面分维间关系[J].东北大学学报(自然科学版),1997,18(1):17-20. |
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| 作者姓名： | 吕铮 龙起易 |
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| 作者单位： | [1]东北大学理学院 [2]中科院金属研究所 |
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| 基金项目： | 冶金工业部“八五”科技攻关项目 |
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| 摘 要： | 分别用二次电子扫描线法和垂直抛面法对不同回火制度的３０ＳｉＭｎＣｒＮｉＭｏＢ钢的冲击断口表面的分维数进行了数量。通过研究发现：平行裂纹扩展方向的分维更适合于描述材料韧性的变化。
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| 关 键 词： | 线分维 面分维 钢 金属材料 断裂 断口 |
Relationships of Two Kinds of Linear Fractal Dimensions and Linear Area Factual Dimentions |
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| L Zheng,Ma Changxiang,Long Qiyi,Li Guifen,Dong Han.Relationships of Two Kinds of Linear Fractal Dimensions and Linear Area Factual Dimentions[J].Journal of Northeastern University(Natural Science),1997,18(1):17-20. |
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| Authors: | L Zheng Ma Changxiang Long Qiyi Li Guifen Dong Han |
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| Abstract: | In this paper,fractal dimensions of impact fractured surface of 30SiMnCrNiMoB steels under different temper conditions are measured by the secondary electron line scanning method and vertical section method. It is found that the fractal dimensions along crack propagation is preferable to describe the change of material toughness. The relationship between fractal dimensions from the secondary electron line scanning method and fractal dimensions from vertical scetion method is obtained and the relationship of linear fractal dimension and area fractal dimension is deduced. |
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| Keywords: | linear fractal dimension area fractal dimension the secondary electron line scanning method wertical section method |
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