Statistical approach for evaluating SCC initiation and propagation behavior of sensitized Type 304 stainless steel

被引：4

作者：

Shibata, T ^{[1
]}

Zhang, S ^{[1
]}

Haruna, T ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Dept Mat Sci & Proc, Suita, Osaka 5650871, Japan

来源：

JOURNAL DE PHYSIQUE IV | 2000年 / 10卷 / P6期

关键词：

D O I：

10.1051/jp4:2000632

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The crack initiation and propagation behavior of a sensitized Type 304 stainless steel in distilled water containing small amounts of Na2SO4 or Na2B4O7 impurities was investigated by using slow strain rate technique (SSRT) with an insitu cracking observation system, and analyzed with a statistical approach. It was found that the crack initiation time for the steel in Na2SO4 or Na2B4O7 solutions obeyed the exponential distribution, while K-ISCC and crack velocity obeyed the Weibull distribution. An increase in Na2B4O7 concentration decreased the SCC susceptibility of the steel by delaying crack initiation time, reducing the crack initiation rate and increasing K-ISCC. In contrast, an increase in Na2SO4 concentration increased SCC susceptibility of the steel by shortening crack initiation time and accelerating crack propagation.

引用

页码：185 / 190

页数：6

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