Effect of manganese content and microstructure on the susceptibility of X70 pipeline steel to hydrogen cracking

被引：119

作者：

Hejazi, D. ^{[1
]}

Haq, A. J. ^{[1
]}

Yazdipour, N. ^{[1
]}

Dunne, D. P. ^{[1
]}

Calka, A. ^{[1
]}

Barbaro, F. ^{[2
]}

Pereloma, E. V. ^{[1
]}

机构：

[1] Univ Wollongong, Sch Mech Mat & Mechatron Engn, Wollongong, NSW 2522, Australia

[2] BlueScope Steel Ltd, Port Kembla, NSW 2505, Australia

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 551卷

基金：

澳大利亚研究理事会;

关键词：

Pipeline steel; Microstructure; Hydrogen charging; Fracture toughness; Fractography; Inclusions; THERMOMECHANICAL CONTROL PROCESS; STRESS-CORROSION CRACKING; TIC PARTICLES; FRACTURE; DIFFUSION; INCLUSIONS; RESISTANCE; EMBRITTLEMENT; CHARACTER; TOUGHNESS;

D O I：

10.1016/j.msea.2012.04.076

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influence of composition and microstructure on susceptibility to hydrogen induced cracking (HIC) was investigated in high strength pipeline steels, with Mn contents of 1.2% (standard, X70), and 0.5% (medium, MX70). The HIC resistance of the simulated coarse grained heat affected zone microstructures and normalized X70 transfer bar was also investigated. Notched and fatigue pre-cracked samples were charged with hydrogen prior to three point bend tests. The conditional fracture toughness J(Q) was determined. The results are discussed in relation to grain size, microstructure, composition and the type and distribution of non-metallic inclusions and precipitates. (C) 2012 Elsevier BM. All rights reserved.

引用

页码：40 / 49

页数：10

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