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不锈钢储罐裂纹试样表面裂纹形貌分析

作者:镇田机械 时间:2019-04-02 17:27
不锈钢储罐裂纹试样表面裂纹形貌分析 图3-1(a)和(b)分别为试样中部分裂纹在低倍和高倍光学显微镜下的形貌,由 图3-1(a)可见图中裂纹形貌具备典型应力腐蚀裂纹特征,如裂纹形貌呈树枝状, 信息摘要:

不锈钢储罐裂纹试样表面裂纹形貌分析

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图3-1(b)为高倍下裂纹端部的微观形貌。在高倍下裂纹扩展的方向性强,主 裂纹明显,并且分支较多,形似落叶后的树干和树枝,在主裂纹周围还存在大量 的二次裂纹,如前文所述这些都属于不锈钢储罐水果拉霸多人版典型的应力腐蚀裂纹特征。此外在试样表面 还发现有大量的点蚀坑存在,说明试样在服役期间耐腐蚀性能已经有了定的下 降。

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不锈钢储罐裂纹试样表面裂纹形貌分析

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不锈钢储罐裂纹试样表面裂纹形貌分析

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不锈钢储罐裂纹试样表面裂纹形貌分析

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不锈钢储罐裂纹试样表面裂纹形貌分析

 

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