TY - JOUR
T1 - Hydrogen trapping and fatigue crack growth property of low-carbon steel in hydrogen-gas environment
AU - Yamabe, Junichiro
AU - Yoshikawa, Michio
AU - Matsunaga, Hisao
AU - Matsuoka, Saburo
N1 - Funding Information:
This work was supported by the New Energy and Industrial Technology Development Organization (NEDO), Fundamental Research Project on Advanced Hydrogen Science (2006 to 2012) and Hydrogen Utilization Technology (2013 to 2018).
Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017/9
Y1 - 2017/9
N2 - Fatigue crack growth (FCG) tests for compact-tension specimens of low-carbon steel were performed under various combinations of hydrogen pressures (0.1–90 MPa), test frequencies (0.001–10 Hz), and test temperatures (room temperature, 363 K, and 423 K). For quantifying the FCG acceleration, the hydrogen trapping and diffusivity of prestrained specimens were determined. Depending on the test conditions, the FCG was accelerated. The hydrogen-assisted FCG acceleration always accompanied localized plastic deformations near the crack tip. The onset of the FCG acceleration was roughly quantified by using a simplified parameter representing the gradient of the hydrogen concentration at the crack tip.
AB - Fatigue crack growth (FCG) tests for compact-tension specimens of low-carbon steel were performed under various combinations of hydrogen pressures (0.1–90 MPa), test frequencies (0.001–10 Hz), and test temperatures (room temperature, 363 K, and 423 K). For quantifying the FCG acceleration, the hydrogen trapping and diffusivity of prestrained specimens were determined. Depending on the test conditions, the FCG was accelerated. The hydrogen-assisted FCG acceleration always accompanied localized plastic deformations near the crack tip. The onset of the FCG acceleration was roughly quantified by using a simplified parameter representing the gradient of the hydrogen concentration at the crack tip.
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U2 - 10.1016/j.ijfatigue.2017.04.010
DO - 10.1016/j.ijfatigue.2017.04.010
M3 - Article
AN - SCOPUS:85018337184
SN - 0142-1123
VL - 102
SP - 202
EP - 213
JO - International Journal of Fatigue
JF - International Journal of Fatigue
ER -