Laboratory criteria of crack resistance of high-strength steels for gas main pipelines

被引：0
|
作者：
I. Yu. Pyshmintsev
A. B. Arabei
V. M. Farber
V. A. Khotinov
N. V. Lezhnin
机构：
[1] Russan Research Institute of the Tube and Pipe Industries,
[2] Gazprom,undefined
[3] Ural Federal University,undefined
来源：
The Physics of Metals and Metallography | 2012年 / 113卷
关键词：
gas main pipeline; high-strength steels; crack resistance; ductile-brittle transition; fracture surface;
D O I：
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中图分类号：
学科分类号：
摘要：
Low-carbon ferrite-bainite pipe steels of the K65 (Kh80) strength grade produced by two manufacturing companies have been studied using different mechanical tests and fractographic analysis of fractured surfaces. The results demonstrate that the energy capacity a (ac) and the true relative reduction at fracture φf upon tensile tests, as well as the level of KCV−40 ≥ 250 J/cm2 and the relative width of the zone of homogeneous ductile fracture LC/B at the fracture surface of Charpy samples upon impact bending tests, can be used as the laboratory criteria of crack resistance.
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页码：411 / 417
页数：6
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