Influence of hydrogen on plasticity around the crack tip in high strength steels

被引：19

作者：

de Assis, Kioshy S. ^{[1
]}

Lage, Marcella Araujo ^{[1
]}

Guttemberg, Geraldo ^{[2
]}

dos Santos, Fabricio Pinheiro ^{[2
]}

Mattos, Oscar R. ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, COPPE, Lab Ensaios Nao Destrut Corrosao & Soldagem LNDC, Cx Postal 68505, BR-21945970 Rio De Janeiro, RJ, Brazil

[2] PETROBRAS CENPES PDEP TMEC, Av Horacio Macedo 950,Cidade Univ, BR-21941598 Rio De Janeiro, RJ, Brazil

来源：

ENGINEERING FRACTURE MECHANICS | 2017年 / 176卷

关键词：

Fracture mechanics; Hydrogen embrittlement; Toughness testing; DUPLEX STAINLESS-STEEL; FRACTURE-TOUGHNESS; EMBRITTLEMENT;

D O I：

10.1016/j.engfracmech.2017.02.028

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Fracture mechanics concepts applied to tests in aggressive environments are a challenge for integrity analysis. Specifically about hydrogen, the concentration of this element in defects or in trapping sites can cause unexpected. failure. The present paper presents results showing the influence of hydrogen in the reduction of fracture toughness and a discussion about how to deal with it in high strength alloys. The results show that the hydrogen reduces the plasticity and consequently the applications of CTOD concepts are questionable for the studied. materials. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：116 / 125

页数：10

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