9Cr-3Co-3W-Nd-B鋼のクリープ特性に及ぼすネオジム含有量の影響

Tomoaki Hamaguchi, Masatoshi Mitsuhara, Hideto Kusuhara

研究成果: ジャーナルへの寄稿学術誌査読

抄録

The effects of the neodymium content on the creep properties and metallographic structure of 9Cr-3Co-3W-Nd-B steel were investigated. Neodymium had a mild effect on the creep rupture strength at contents up to 0.056 mass%. This suggested that the effects of neodymium compounds and solid-dissolved neodymium were minimal in the microstructures and uniformly creep-deformed parts after normalizing and tempering heat treatment. On the other hand, the reduction of area after creep rupture was improved by the addition of neodymium. Creep rupture occurred at the prior austenite grain boundaries on steel without neodymium. Therefore, neodymium conclusively adhered to the segregated sulfur at the prior austenite grain boundaries to suppress the formation of creep cracks.

寄稿の翻訳タイトルEffect of Neodymium Content on Creep Properties of 9Cr-3Co-3W-Nd-B Steel
本文言語日本語
ページ(範囲)325-333
ページ数9
ジャーナルTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
108
5
DOI
出版ステータス出版済み - 2022

!!!All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 物理化学および理論化学
  • 金属および合金
  • 材料化学

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