Effects of delta ferrite on hydrogen embrittlement of austenitic stainless steel welds

被引：55

作者：

Luppo, MI ^{[1
]}

Hazarabedian, A ^{[1
]}

Ovejero-García, J ^{[1
]}

机构：

[1] Comis Nacl Energia Atom, Dept Mat, RA-1429 Buenos Aires, DF, Argentina

来源：

CORROSION SCIENCE | 1999年 / 41卷 / 01期

关键词：

stainless steel; SEM; hydrogen embrittlement;

D O I：

10.1016/S0010-938X(98)00083-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects on the hydrogen embrittlement (HE) due to variation of the delta ferrite contents were investigated on austenitic stainless steel welds. The hydrogen distribution in the microstructure was studied by means of the hydrogen microprint technique. The damage caused by the hydrogen was evaluated through bending and tensile tests. The ferrite-austenite interfaces act as hydrogen traps. Ferrite increases the susceptibility to hydrogen, the greater the quantity of ferrite, the more HE, which basically modifies the form in which the hydrogen damages the material: it causes the austenite to change from a normal fragile fracture to a ductile fracture, accompanying the ferrite fragile fracture. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：87 / 103

页数：17

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