HYDROGEN-INDUCED CRACKING OF LINEPIPE STEELS .1. THRESHOLD HYDROGEN CONCENTRATION AND PH

被引：28

作者：

REVIE, RW

SASTRI, VS

HOEY, GR

RAMSINGH, RR

MAK, DK

SHEHATA, MT

机构：

[1] CANMET, Ottawa, Ont

来源：

CORROSION | 1993年 / 49卷 / 01期

关键词：

ACETIC ACID; HYDROGEN-INDUCED CRACKING; PH CHANGES AND EFFECTS; PIPELINES;

D O I：

10.5006/1.3316028

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Threshold hydrogen concentration (C(th)H) and threshold pH (pH(th)) for hydrogen-induced cracking (HIC) were determined for commercial sour service linepipe steels exposed to H2S-saturated buffer solutions. Metallographic examination of the steel samples by optical and electron microscopy showed that ultrasonic C-scan is an effective method for detecting HIC and for locating cracks in exposed steel coupons. A banded microstructure was found to be detrimental to the HIC resistance of clean steels. The obtained pH(th) values can be used to rank the steels with respect to HIC resistance.

引用

页码：17 / 23

页数：7