| 复相钢的疲劳小裂纹扩展实验研究 |
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| 引用本文： | 龙莉霞,梁益龙.复相钢的疲劳小裂纹扩展实验研究[J].贵州工业大学学报(自然科学版),2002,31(2):72-76. |
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| 作者姓名： | 龙莉霞 梁益龙 |
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| 作者单位： | 贵州工业大学,冶金系,贵州,贵阳,550003 |
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| 基金项目： | 国家自然科学基金资助项目 (5 0 0 410 10 ) |
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| 摘 要： | 用塑料复型法对马氏体＋贝氏体复相钢小裂纹的扩展特性进行了实验研究，实验表明，塑料复性法是监测小裂纹的有效手段，小裂纹主要在缺口表面初始缺陷（如夹杂物）处萌生；在裂纹较小阶段、疲劳小裂纹的扩展受显微组织与多相界的影响。
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| 关 键 词： | 小裂纹 疲劳扩展 复相钢 塑料复型法 实验研究 |
| 文章编号： | 1009-0193(2002)02-0072-05 |
| 修稿时间： | 2001年12月3日 |
Testing Research on Small Fatigue Crack Growth in Complex Phase Steel |
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| LONG Li xia,LIANG Yi long.Testing Research on Small Fatigue Crack Growth in Complex Phase Steel[J].Journal of Guizhou University of Technology(Natural Science Edition),2002,31(2):72-76. |
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| Authors: | LONG Li xia LIANG Yi long |
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| Abstract: | The growth characteristic of small crack in Martensite+complex phase steel was investigated by the plastic replica method. The experiments show that the plastic replica method is an effective way to examine small crack. The crack is naturally initiated from the material initial fault (such as lard) on the notch's surface. When the crack is small, the fatigue crack growth is obviously influenced by microstructure features and multiple phase boundaries. |
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| Keywords: | small crack fatigue growth complex phase steel |
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