Download file (5.21MB)
Download as zip (5.11MB)

コレクション

引用

説明:

The creep properties and microstructures of two types of Gr. 91 steel with different impurity (Sb, As, Sn) contents were investigated. The steel with higher impurity concentrations (Steel 1) ruptured in slightly shorter time than the steel with lower impurity concentrations (Steel 2). The reduction of area for Steel 1 was slightly lower than that for Steel 2 due to higher density of creep voids in Steel 1. However, no clear correlation was observed between impurity contents and either elongation or creep intolerance parameter (λ). Microstructural observation revealed that the effect of impurities on the initial microstructure was considered negligible. During creep, the crystallographic relationship between common rotation axes and rotation angles at block/packet boundaries gradually disappeared. Among block boundaries, <011>53° and <011>60° were found to be more susceptible to creep deformation, whereas <111>60° was relatively less sensitive.

権利情報:

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

キーワード: creep strength enhanced ferritic steels, Type 2 specification, creep void, segregation, block/ packet boundaries

刊行年月日: 2026-07-15

出版者: Iron and Steel Institute of Japan

掲載誌:

• ISIJ International (ISSN: 09151559) vol. 66 issue. 8 ISIJINT-2026-044

研究助成金:

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.2355/isijinternational.isijint-2026-044

関連資料:

その他の識別子:

連絡先:

更新時刻: 2026-07-30 08:37:06 +0900

MDRでの公開時刻: 2026-07-30 10:31:01 +0900