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Surface cracking on Σ3, Σ9 CSL and random grain boundaries in helium implanted 316L austenitic stainless steel

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Title: Surface cracking on Σ3, Σ9 CSL and random grain boundaries in helium implanted 316L austenitic stainless steel
Authors: Sakaguchi, N. Browse this author →KAKEN DB
Ohguchi, Y. Browse this author
Shibayama, T. Browse this author
Watanabe, S. Browse this author
Kinoshita, H. Browse this author
Issue Date: Jan-2013
Journal Title: Journal of Nuclear Materials
Volume: 432
Issue: 1-3
Start Page: 23
End Page: 27
Publisher DOI: 10.1016/j.jnucmat.2012.08.019
Abstract: The relationship between surface cracking at grain boundaries and the grain boundary nature in helium implanted 316L austenitic stainless steel was investigated by in situ annealing in a high-voltage electron microscope, and by SEM and TEM observations. The nucleation and growth of helium bubbles at a random grain boundary was observed during annealing up to 973 K. After annealing, surface cracking was observed at the random grain boundaries and some coincidence site lattice (CSL) boundaries because of the formation and rupture of the helium bubbles at these grain boundaries. At the faceted CSL boundaries, surface cracking occurred only on one boundary facet plane. This indicates that the twin boundary and pure tilt Σ9 CSL boundary show the highest resistance to cracking because of their low boundary energies.
Type: article (author version)
URI: http://hdl.handle.net/2115/52690
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 坂口 紀史

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