TY - JOUR
T1 - Effects of hydrogen content that alters damage evolution mechanisms in SUH 660 precipitation-strengthened Fe–Cr–Ni steel
AU - Verma, Virendra Kumar
AU - Koyama, Motomichi
AU - Hamada, Shigeru
AU - Akiyama, Eiji
N1 - Funding Information:
This work was supported financially by JSPS KAKENHI [ JP20H02457 ].
Publisher Copyright:
© 2020
PY - 2020/7/22
Y1 - 2020/7/22
N2 - This study aims at understanding the change of the hydrogen embrittlement mechanism with respect to hydrogen content of a precipitation-strengthened Fe–Ni–Cr-based steel. Hydrogen was electrochemically introduced with different current densities. The hydrogen-charging deteriorated crack initiation and propagation resistances as well as the crack tip blunting capability. Further, with increasing hydrogen content, the primary cracking sites changed from coarse carbides to slip bands, and then to grain boundaries. Moreover, because the crack initiation probability increased and the resistance to trans-granular crack propagation decreased with hydrogen content, the crack coalescence associated with slip localization occurred more frequently.
AB - This study aims at understanding the change of the hydrogen embrittlement mechanism with respect to hydrogen content of a precipitation-strengthened Fe–Ni–Cr-based steel. Hydrogen was electrochemically introduced with different current densities. The hydrogen-charging deteriorated crack initiation and propagation resistances as well as the crack tip blunting capability. Further, with increasing hydrogen content, the primary cracking sites changed from coarse carbides to slip bands, and then to grain boundaries. Moreover, because the crack initiation probability increased and the resistance to trans-granular crack propagation decreased with hydrogen content, the crack coalescence associated with slip localization occurred more frequently.
UR - http://www.scopus.com/inward/record.url?scp=85086801257&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85086801257&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2020.139750
DO - 10.1016/j.msea.2020.139750
M3 - Article
AN - SCOPUS:85086801257
SN - 0921-5093
VL - 791
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
M1 - 139750
ER -