Stress Corrosion Cracking Susceptibility of Various Austenitic Stainless Steel Pipe Welds in High Temperature Oxygenated Water
Stress Corrosion Cracking Susceptibility of Various Austenitic Stainless Steel Pipe Welds in High Temperature Oxygenated Water
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高温含氧水中各种奥氏体不锈钢管焊缝的应力腐蚀开裂敏感性
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
Hisao Ito
中科院分区：
文献类型：
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作者：
J. Kuniya;S. Hattori;I. Masaoka;R. Sasaki;Hisao Ito
通过恒定载荷拉伸试验和管道试验，研究了不同奥氏体不锈钢管道焊缝在含26ppm溶解氧的288C水中的应力腐蚀开裂敏感性。主要研究结果如下：(1)在焊态条件下，SUS 304管道焊缝的应力腐蚀敏感性较低。然而，通过磨床操作和/或低温敏化热处理，它变得显著地高。SUS304管道焊缝的失效时间分布可表示为对数正态分布或威布尔分布。(2)SUS 304L、304 NG、316 NG和347不锈钢管道焊缝具有良好的抗应力腐蚀性能和抗敏化性能。在此基础上，对交替焊接管道进行了寿命估算。
Stress corrosion carcking (SCC) susceptibility of various austenitic stainless steel pipe welds has been studied by means of constant load tensile tests and pipe tests in 288C water containing 26ppm dissolved oxygen. The results obtained are summarized as follows: (1) SCC susceptibility of SUS 304 pipe welds is comparatively low under the condition of as-welded. It becomes, however, high remarkably by grinder operation and/or low temperature sensitization heat treatment. The distribution of time to failure on SUS 304 pipe welds can be expressed as a log-normal or Weibull distribution. (2) SUS 304L, 304 NG, 316 NG, and 347 stainless steel pipe welds have a good SCC resistance and sensitization resistance. Furthermore, the life estimation on alternate pipe welds was conducted statistically.