| 16Mn钢焊接件疲劳裂纹扩展的微观特征研究 |
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| 引用本文： | 高艳丽,郭晓光,杨化仁.16Mn钢焊接件疲劳裂纹扩展的微观特征研究[J].机械设计与制造,2007(7):124-125. |
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| 作者姓名： | 高艳丽 郭晓光 杨化仁 |
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| 作者单位： | 沈阳大学,机械工程学院,沈阳,110044 |
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| 摘 要： | 研究了在循环载荷作用下,16Mn钢焊接件疲劳裂纹的扩展情况.通过光学显微镜观察了裂纹扩展的微观特征,发现了裂纹在焊接结构不同部位的扩展路径方式并分析了显微组织对裂纹扩展的影响.裂纹在母材处为穿晶扩展,在热影响区和焊缝金属中的扩展为穿晶和沿晶混合型.
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| 关 键 词： | 焊接件 裂纹扩展 微观特征 焊接件 疲劳裂纹扩展 微观特征 特征研究 welded structure steel fatigue crack propagation characteristic micro 混合型 沿晶 穿晶扩展 焊缝金属 热影响区 显微组织 分析 路径方式 同部位 焊接结构 发现 |
| 文章编号： | 1001-3997（2007）07-0124-02 |
| 修稿时间： | 2006-10-17 |
A study on the micro characteristic of the fatigue crack propagation in 16Mn steel welded structure |
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| GAO Yan-li,GUO Xiao-guang,YANG Hua-ren.A study on the micro characteristic of the fatigue crack propagation in 16Mn steel welded structure[J].Machinery Design & Manufacture,2007(7):124-125. |
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| Authors: | GAO Yan-li GUO Xiao-guang YANG Hua-ren |
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| Affiliation: | School of Mechanical Engineering Shenyang University, Shenyang 110044, China |
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| Abstract: | The situation of fatigue crack propagation of 16Mn steel welded structure is studied under cyclic loads. The microscopic characteristic of the fatigue crack propagation is observed through the optical microscope.The results are finding the cracks propagation path in the different parts of welded structure and analyzing the influence of the microstructure gives the crack propagation. The path of crack propagation in the base metal is mostly transgranular.The path of crack propagation in the heat-affected zone and weld metal is the mix of transgranular and intergranular. |
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| Keywords: | Welded structure Crack propagation Micro characteristic |
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