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説明:

The precipitation behavior of M23C6 on random and coherent twin boundaries in aged 25Cr–20Ni–Nb–N steel was characterized. M23C6 on a random boundary has a cube-on-cube orientation relationship with a single-grain side and no orientation relationship with the other side. NbX was precipitated at the coherent interface on the random boundary. Two M23C6 particles were precipitated on both sides of the coherent twin boundary with a (1 1 1)M23C6-A//(1 1 1)M23C6-B and [1 1 0]M23C6-A//[1 1 0]M23C6-B orientation relationship, which is identical with that of the coherent twin boundary of austenite matrix. As a result, the M23C6 twin was formed at the original twin boundary. Both sides of the matrix/M23C6 interfaces satisfied a cube-on-cube orientation relationship with faceted interfaces parallel to (1 1 1)γ and (1 1 1)M23C6. NbX is precipitated at the M23C6 twin boundary.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: Austenitic steel, Carbide, Coherent precipitation, Twin boundary

刊行年月日: 2024-03-07

出版者: Elsevier BV

掲載誌:

• Materials Letters (ISSN: 0167577X) vol. 363 136277

研究助成金:

• Japan Society for the Promotion of Science 22K14504 (高強度オーステナイト耐熱鋼の析出組織制御による長寿命化 )
• Iketani Science and Technology Foundation 0351201-A (高強度オーステナイト耐熱鋼の析出組織制御によるクリープ特性の向上)

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1016/j.matlet.2024.136277

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更新時刻: 2024-03-19 16:57:27 +0900

MDRでの公開時刻: 2024-03-19 16:57:27 +0900