Fatigue limit of carbon and Cr-Mo steels as a small fatigue crack threshold in high-pressure hydrogen gas

被引：36
|
作者：
Ogawa, Yuhei [1 ,2 ]
Matsunaga, Hisao [3 ,4 ,5 ]
Yamabe, Junichiro [6 ]
Yoshikawa, Michio [7 ]
Matsuoka, Saburo [8 ]
机构：
[1] Kyushu Univ, Grad Sch Engn, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan
[2] Japan Soc Promot Sci, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan
[3] Kyushu Univ, Dept Mech Engn, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan
[4] Kyushu Univ, Int Inst Carbon Neutral Energy Res I2CNER, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan
[5] Kyushu Univ, Res Ctr Hydrogen Ind Use & Storage HYDROGENIUS, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan
[6] Fukuoka Univ, Dept Mech Engn, Jonan Ku, 8-19-1 Nanakuma, Fukuoka, Fukuoka 8140180, Japan
[7] Kobe Mat Testing Lab Co Ltd, 47-13 Niijima, Harima, Hyogo 6750155, Japan
[8] Kyushu Univ, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2018年 / 43卷 / 43期
关键词：
Carbon steel; Cr-Mo steel; Hydrogen embrittlement; Fatigue limit; Non-propagating crack; AUSTENITIC STAINLESS-STEELS; NEAR-THRESHOLD; GASEOUS-HYDROGEN; STRENGTH STEELS; GROWTH; PROPAGATION; BEHAVIOR; FRACTURE; MECHANISM; DEFORMATION;
D O I：
10.1016/j.ijhydene.2018.09.026
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The fatigue limit properties of a carbon steel and a low-alloy Cr-Mo steel were investigated via fully-reversed tension-compression tests, using smooth specimens in air and in 115-MPa hydrogen gas. With respect to the Cr-Mo steel, specimens with sharp notches were also tested in order to investigate the threshold behavior of small cracks. The obtained S-N data inferred that the fatigue limit was not negatively affected by hydrogen in either of the steels. Observation of fatigue cracks in the unbroken specimens revealed that non propagating cracks can exist even in 115-MPa hydrogen gas, and that the crack growth threshold is not degraded by hydrogen. The experimental results provide justification for the fatigue limit design of components that are to be exposed to high-pressure hydrogen gas. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：20133 / 20142
页数：10
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