Analysis of the intergranular corrosion susceptibility in stainless steel by means of potentiostatic reactivation tests

被引：9

作者：

Iacoviello, Francesco ^{[1
]}

Di Cocco, Vittorio ^{[1
]}

D'Agostino, Laura ^{[1
]}

机构：

[1] Univ Cassino & Lazio Merid, DICeM, Via G Di Biasio 43, I-03043 Cassino, FR, Italy

来源：

XXIV ITALIAN GROUP OF FRACTURE CONFERENCE, 2017 | 2017年 / 3卷

关键词：

Stainless steels; Intergranular corrosion cracking; Potentiostatic reactivation tests;

D O I：

10.1016/j.prostr.2017.04.032

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Intergranular corrosion cracking in stainless steels is a selective corrosion attack due to a local (grain boundary) Cr depletion. An undesired Cr carbides (Cr23C6) precipitation after heat treatment in the sensitization temperature range (usually between 550 and 850 degrees C, depending on the steel chemical composition) is obtained with a kinetics that is mainly influenced by the C content. In this work, the sensitization susceptibility of four sensitized stainless steels was investigated by means of potentiostatic reactivations tests. In addition, chronoamperometric tests and scanning electron microscope (SEM) observations of the specimens surfaces were performed in order to analyze the evolution of the corrosion morphologies. Copyright (C) 2017 The Authors. Published by Elsevier B.V.

引用

页码：269 / 275

页数：7