@article{1235602e3b354c308fdf7202f796de54,
title = "Pronounced transition of crack initiation and propagation modes in the hydrogen-related failure of a Ni-based superalloy 718 under internal and external hydrogen conditions",
abstract = "The role of hydrogen in tensile ductility loss and on the fracture behaviours of Ni-based superalloy 718 was investigated via tensile tests under hydrogen-charged conditions (internal hydrogen) or in gaseous hydrogen environments (external hydrogen), in combination with post-mortem analyses of fractured samples using electron microscopy techniques. Whereas intergranular fracture was responsible for material degradation under external hydrogen, the failure modes under internal hydrogen conditions were primarily dominated by cracking along slip planes or twin boundaries. The mechanisms of crack initiation and propagation are extensively discussed in terms of hydrogen distribution, intrinsic deformation character of the material and hydrogen-modified dislocation behavior.",
author = "Yuhei Ogawa and Osamu Takakuwa and Saburo Okazaki and Koichi Okita and Yusuke Funakoshi and Hisao Matsunaga and Saburo Matsuoka",
note = "Funding Information: This work was executed as part of a collaborative research project between the Japan Aerospace Exploration Agency (JAXA) and Kyushu University. It was also partially supported by the Advanced Characterization Nanotechnology Platform program , sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan . Funding Information: This work was executed as part of a collaborative research project between the Japan Aerospace Exploration Agency (JAXA) and Kyushu University. It was also partially supported by the Advanced Characterization Nanotechnology Platform program, sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",
year = "2019",
month = dec,
doi = "10.1016/j.corsci.2019.108186",
language = "English",
volume = "161",
journal = "Corrosion Science",
issn = "0010-938X",
publisher = "Elsevier Limited",
}