Initiation of Stress Corrosion Cracks in X80 and X100 Pipe Steels in Near-Neutral pH Environment

被引：10

作者：

Kang, Jidong ^{[1
]}

Zheng, Wenyue ^{[1
]}

Bibby, Darren ^{[1
]}

Amirkhiz, Babak Shalchi ^{[1
]}

Li, Jian ^{[1
]}

机构：

[1] CanmetMAT, Nat Resources Canada, 183 Longwood Rd South, Hamilton, ON L8P 0A5, Canada

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2016年 / 25卷 / 01期

关键词：

crack growth rate; initiation; near-neutral pH; stress corrosion cracking; X80 pipe steel; X100 pipe steel;

D O I：

10.1007/s11665-015-1822-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tests were conducted on X80 and X100 pipe steels at 95% specified minimum yield stress in NS4 solution mixed with soil using specimens machined along the transverse direction of the pipes. Crack initiation in X100 is much easier than in X80. With test time increasing from 110 to 220 days, less numerous but deeper cracks were found in both pipe steels. Cracks showed higher growth rates in the transverse specimens than those in longitudinal ones. TEM results revealed concentration of Ni or Cr elements, formation of oxide layer at crack walls, and TiN-related dissolution at the crack tip.

引用

页码：227 / 240

页数：14

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[1] Initiation of Stress Corrosion Cracks in X80 and X100 Pipe Steels in Near-Neutral pH Environment
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[2] Erratum to: Initiation of Stress Corrosion Cracks in X80 and X100 Pipe Steels in Near-Neutral pH Environment
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