Application of acoustic emission method for investigation of hydrogen embrittlement mechanism in the low-carbon steel

被引：25

作者：

Merson, E. ^{[1
]}

Vinogradov, A. ^{[1
,2
]}

Merson, D. L. ^{[1
,2
]}

机构：

[1] Togliatti State Univ, Lab Phys Strength Mat & Intelligent Diagnost Syst, Tolyatti 445667, Russia

[2] Kazan Fed Univ, Adv Mat Lab, Chelny 423812, Republic Of Tat, Russia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 645卷

基金：

俄罗斯基础研究基金会;

关键词：

Hydrogen embrittlement; Fractography; Acoustic emission; Fisheye; Quasi-cleavage; INTERGRANULAR FRACTURE; ASSISTED CRACKING;

D O I：

10.1016/j.jallcom.2014.12.083

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The hydrogen embrittlement (HE) phenomenon in the electrolytically charged mild low-carbon steel was investigated during tensile testing coupled with in situ acoustic emission (AE) measurements and post mortem fractographic analysis. It was demonstrated that the ductility reduction correlated with the formation of HE-induced quasi-cleavage regions known as "fisheyes'' which formed during the necking stage under the influence of mobile hydrogen. Based on the AE analysis we conclude that formation of "fisheyes'' in the mild steel under load cannot be explained by a decohesion mechanism and the alternative mechanisms are discussed. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：S460 / S463

页数：4