<i>In-situ</i> Observation of Dislocation Evolution in Ferritic and Austenitic Stainless Steels under Tensile Deformation by Using Neutron Diffraction
-
- Sato Shigeo
- Graduate School of Science and Engineering, Ibaraki University
-
- Kuroda Asumi
- Graduate School of Science and Engineering, Ibaraki University
-
- Satoh Kozue
- Institute for Materials Research, Tohoku University
-
- Kumagai Masayoshi
- Faculty of Engineering, Tokyo City University
-
- Harjo Stefanus
- J-PARC Center, Japan Atomic Energy Agency
-
- Tomota Yo
- National Institute for Materials Science
-
- Saito Yoichi
- Nippon Yakin Kogyo Co., Ltd.
-
- Todoroki Hidekazu
- Nippon Yakin Kogyo Co., Ltd.
-
- Onuki Yusuke
- Frontier Research Center for Applied Atomic Sciences, Ibaraki University
-
- Suzuki Shigeru
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
Bibliographic Information
- Other Title
-
- 中性子回折ラインプロファイル解析によるフェライト系およびオーステナイト系ステンレス鋼の引張変形中の転位増殖その場観察
- チュウセイシ カイセツ ラインプロファイル カイセキ ニ ヨル フェライトケイ オヨビ オーステナイトケイ ステンレスコウ ノ ヒッパリ ヘンケイ チュウ ノ テンイ ゾウショク ソノ バ カンサツ
- In-situ observation of dislocation evolution in ferritic and austenitic stainless steels under tensile deformation by using neutron diffraction
Search this article
Abstract
<p>To investigate the characteristics of dislocation evolution in ferritic and austenitic stainless steels under tensile deformation, neutron diffraction line-profile analysis was carried out. The austenitic steel exhibited higher work hardening than the ferritic steel. The difference in the work hardening ability between the two steels was explained with the dislocation density estimated by the line-profile analysis. The higher dislocation density of the austenitic steel would originate from its lower stacking fault energy. Dislocation arrangement parameters indicated that the strength of interaction between dislocations in the austenitic steel was stronger than that in the ferritic steel. This would mainly originate from the difference in dislocation substructures; while dislocation tangle, which can be prompted by the cross slip, was expected in the ferritic steels, highly dense dislocation walls induced by planar glide of dislocations as well as the tangle were expected in the austenitic steel. It was confirmed that the stronger interaction between dislocations in the austenitic steel resulted in the smaller strain field of dislocation. Consequently, the coefficient for the root square of dislocation density in the Bailey-Hirsh equation became smaller in the austenitic steel. X-ray diffraction line-profile analysis was also carried out for the tensile-deformed specimens. The dislocation arrangement parameter evaluated by X-ray diffraction was smaller than that evaluated by neutron diffraction. This would be caused by the difference in the relationship between the loading direction and the scattering vector. On the other hand, the dislocation density evaluated by both methods was almost identical.</p>
Journal
-
- Tetsu-to-Hagane
-
Tetsu-to-Hagane 104 (4), 201-207, 2018
The Iron and Steel Institute of Japan
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390001205217335296
-
- NII Article ID
- 130006594212
-
- NII Book ID
- AN00151251
-
- ISSN
- 18832954
- 00211575
-
- NDL BIB ID
- 029056260
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
-
- Abstract License Flag
- Disallowed