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不锈钢储罐上的316L焊接接头及母材的耐蚀性能研究

作者:镇田机械 时间:2019-04-04 08:14
不锈钢储罐上的316L焊接接头及母材的耐蚀性能研究 如前文所述,在本研宄中采用四点弯曲恒载荷法对316L不锈钢储罐焊接接 头及母材的应力腐蚀敏感性进行研宄。根据过标GB/T 15970.2-2000对以下 信息摘要:

不锈钢储罐水果拉霸多人版上的316L焊接接头及母材的耐蚀性能研究

如前文所述,在本研宄中采用四点弯曲恒载荷法对316L不锈钢储罐焊接接 头及母材的应力腐蚀敏感性进行研宄。根据过标GB/T 15970.2-2000对以下三组 试样进行应力腐蚀试验(每组2个试样),并分析其应力腐蚀敏感性:(I)服役 15年焊接接头试样、(II)未经服役316L焊接接头试样、(III)服役15年后316L 母材试样。应力腐蚀试验结果如表4-2所示,可见同样经过15年服役,储罐焊 接接头试样开裂时间要明显比储罐母材试样开裂时间短,而未经服役的储罐焊接 接头试样在试验过程中(200小时)未发生开裂,因此对于应力腐蚀敏感性,经 15年服役储罐焊接接头>经15年服役储罐母材>未经服役储罐焊接接头,除了 长时间服役以外,焊接过程对于316L不锈钢的应力腐蚀敏感性同样有较大的影响。

不锈钢储罐上的316L焊接接头及母材的耐蚀性能研究

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不锈钢储罐上的316L焊接接头及母材的耐蚀性能研究

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不锈钢储罐上的316L焊接接头及母材的耐蚀性能研究

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