TY - GEN
T1 - Crack growth behavior in air and hydrogen of iron-3% silicon single-crystal thin sheet
AU - Thuong, Huynh Thanh
AU - Hamada, Shigeru
AU - Tsuzaki, Kaneaki
AU - Noguchi, Hiroshi
N1 - Funding Information:
This work was financially supported by JSPS KAKENHI (JP16H06365)
Publisher Copyright:
© 2023 Author(s).
PY - 2023/2/21
Y1 - 2023/2/21
N2 - Effects of hydrogen on the macroscopic behavior of crack growth in a thin sheet of single-crystal Fe-3wt%Si alloy were investigated. The center-cracked specimens were tested under a sustained load in a hydrogen environment while under continuous stretching in an air environment. A comparison between the macroscopic behavior of the specimens tested in hydrogen and air was made to elucidate the effects of hydrogen. The results show that hydrogen lowers the driving force for crack growth in the hydrogen environment. COTA is approximately constant in a hydrogen environment while it slightly increases in an air environment. Also, the necking region near the crack tip during crack growth increases linearly with the crack length in both environments; however, at the same crack length, a smaller necking region is observed in the hydrogen environment. Since the necking region can be regarded as the measure of the crack-Tip plastic zone size, the necking region is speculated to increase linearly with the crack length, which is consistent with Dugdale's equation formulated for a perfect plastic body.
AB - Effects of hydrogen on the macroscopic behavior of crack growth in a thin sheet of single-crystal Fe-3wt%Si alloy were investigated. The center-cracked specimens were tested under a sustained load in a hydrogen environment while under continuous stretching in an air environment. A comparison between the macroscopic behavior of the specimens tested in hydrogen and air was made to elucidate the effects of hydrogen. The results show that hydrogen lowers the driving force for crack growth in the hydrogen environment. COTA is approximately constant in a hydrogen environment while it slightly increases in an air environment. Also, the necking region near the crack tip during crack growth increases linearly with the crack length in both environments; however, at the same crack length, a smaller necking region is observed in the hydrogen environment. Since the necking region can be regarded as the measure of the crack-Tip plastic zone size, the necking region is speculated to increase linearly with the crack length, which is consistent with Dugdale's equation formulated for a perfect plastic body.
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U2 - 10.1063/5.0110547
DO - 10.1063/5.0110547
M3 - Conference contribution
AN - SCOPUS:85149985310
T3 - AIP Conference Proceedings
BT - 3rd International Conference on Engineering, Technology and Innovative Researches
A2 - Kurniawan, Yogiek Indra
A2 - Fadli, Ari
A2 - Saputro, Dani Nugroho
A2 - Hardini, Probo
A2 - Aditama, Maulana Rizkia
A2 - Sofiana, Amanda
A2 - Sibarani, Ayu Anggraeni
PB - American Institute of Physics Inc.
T2 - 3rd International Conference on Engineering, Technology and Innovative Researches, ICETIR 2021
Y2 - 1 September 2021
ER -