-
- Nakada Nobuo
- International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University Department of Materials Science and Engineering, Graduate School of Engineering, Kyushu University
-
- Fukuzawa Norihide
- Graduate Student of Engineering, Kyushu University
-
- Tsuchiyama Toshihiro
- International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University Department of Materials Science and Engineering, Graduate School of Engineering, Kyushu University
-
- Takaki Setsuo
- Department of Materials Science and Engineering, Graduate School of Engineering, Kyushu University International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University
-
- Koyano Tamotsu
- Cryogenics Division, Research Facility Center, University of Tsukuba
-
- Iwamoto Takashi
- Steel Research Laboratory, JFE Steel Corporation
-
- Omori Yasuhiro
- Steel Research Laboratory, JFE Steel Corporation
書誌事項
- タイトル別名
-
- Isothermal Transformation in Fe–N Hypereutectoid Alloy
この論文をさがす
抄録
In order to understand the mechanism of isothermal transformation of Fe–N alloy, the isothermal transformation microstructure that forms in a wide temperature range below Ae1 was investigated in Fe–2.6 mass%N hypereutectoid alloy by means of the electron back scatter diffraction method in addition to the conventional microstructural observation methods. High-nitrogen austenite fully decomposed to ferrite and Fe4N over the entire temperature range, and the time-temperature-transformation (TTT) diagram had a C shape with a nose temperature around 700 K. The hardness linearly increased with decreasing transformation temperature because the microstructure became finer, but the morphology of the (ferrite + Fe4N) structure changed discontinuously at around 800 K. From the microstructural and crystallographic analyses, it was concluded that the microstructure formed at higher temperature is a lamellar eutectoid structure, braunite, while the other is an upper bainitic structure containing bainitic ferrite formed through a displacive mechanism and Fe4N formed by concentration and ordering of the nitrogen. Since Fe4N is a counterpart of the cementite in Fe–C alloy, the respective structures are similar to pearlite and upper bainite in carbon steel.
収録刊行物
-
- ISIJ International
-
ISIJ International 53 (1), 139-144, 2013
一般社団法人 日本鉄鋼協会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390282681464840960
-
- NII論文ID
- 10031170298
-
- NII書誌ID
- AA10680712
-
- COI
- 1:CAS:528:DC%2BC3sXhsFSisbk%3D
-
- ISSN
- 13475460
- 09151559
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可