A new approach to evaluate irradiation hardening of ion-irradiated ferritic alloys by nano-indentation techniques

Ryuta Kasada, Yoshiyuki Takayama, Kiyohiro Yabuuchi, Akihiko Kimura

研究成果: Article査読

190 被引用数 (Scopus)

抄録

The present work investigates the irradiation hardening of Fe-based model ferritic alloys after Fe-ion irradiation experiments in order to deduce mechanistically based nominal hardness from the nano-indentation tests on the ion-irradiated surface. Ion-irradiation experiments were carried out at 290 °C with 6.4 MeV Fe3+ ions. The constant stiffness measurement (CSM) was used to obtain the depth-profile of hardness. The results has been analyzed and discussed based on the Nix-Gao model and an extended film/substrate system hardness model. The depth-sensing nano-indentation techniques with CSM revealed that the hardness gradient of the unirradiated Fe-based model alloy can be explained through the indentation size effect (ISE). On the other hand, the gradient of ion-irradiated surface of these samples includes not only the ISE but also softer substrate effect (SSE). We propose a new approach to evaluate a nominal hardness, which may connect to the bulk hardness, from experimentally obtained nano-hardness depth profile data.

本文言語English
ページ(範囲)2658-2661
ページ数4
ジャーナルFusion Engineering and Design
86
9-11
DOI
出版ステータスPublished - 2011 10月

ASJC Scopus subject areas

  • 土木構造工学
  • 原子力エネルギーおよび原子力工学
  • 材料科学(全般)
  • 機械工学

フィンガープリント

「A new approach to evaluate irradiation hardening of ion-irradiated ferritic alloys by nano-indentation techniques」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル