Abstract
A novel type of heat treatment to control austenite stability by precipitation and dissolution of carbide was applied to a 18%Ni-0.6%C steel. The new method enables to study the inherent characteristics of austenite formed by martensitic reversion. The material selected for this study is a hypereutectoid steel with a large carbon solubility gap depending on the austenitizing temperature. The precipitated carbide immediately dissolves into the austenite matrix again after martensitic reversion in order to restore the Ms and Mf temperatures to their initial values. The crystallographic orientation of each phase was mapped by means of the electron back scattering diffraction (EBSD) method using a field emission scanning electron microscope. A full fcc-bcc-fcc reversible martensitic transformations cycle was observed. As a result of the specific heat treatment, the austenite that was formed by martensitic reversion remains stable at ambient temperature.
| Original language | English |
|---|---|
| Pages (from-to) | 1286-1288 |
| Number of pages | 3 |
| Journal | isij international |
| Volume | 53 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Sep 4 2013 |
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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
Cite this
Inheritance of dislocations and crystallographic texture during martensitic reversion into austenite. / Nakada, Nobuo; Fukagawa, Reiji; Tsuchiyma, Toshihiro; Takaki, Setsuo; Ponge, Dirk; Raabe, Dierk.
In: isij international, Vol. 53, No. 7, 04.09.2013, p. 1286-1288.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Inheritance of dislocations and crystallographic texture during martensitic reversion into austenite
AU - Nakada, Nobuo
AU - Fukagawa, Reiji
AU - Tsuchiyma, Toshihiro
AU - Takaki, Setsuo
AU - Ponge, Dirk
AU - Raabe, Dierk
PY - 2013/9/4
Y1 - 2013/9/4
N2 - A novel type of heat treatment to control austenite stability by precipitation and dissolution of carbide was applied to a 18%Ni-0.6%C steel. The new method enables to study the inherent characteristics of austenite formed by martensitic reversion. The material selected for this study is a hypereutectoid steel with a large carbon solubility gap depending on the austenitizing temperature. The precipitated carbide immediately dissolves into the austenite matrix again after martensitic reversion in order to restore the Ms and Mf temperatures to their initial values. The crystallographic orientation of each phase was mapped by means of the electron back scattering diffraction (EBSD) method using a field emission scanning electron microscope. A full fcc-bcc-fcc reversible martensitic transformations cycle was observed. As a result of the specific heat treatment, the austenite that was formed by martensitic reversion remains stable at ambient temperature.
AB - A novel type of heat treatment to control austenite stability by precipitation and dissolution of carbide was applied to a 18%Ni-0.6%C steel. The new method enables to study the inherent characteristics of austenite formed by martensitic reversion. The material selected for this study is a hypereutectoid steel with a large carbon solubility gap depending on the austenitizing temperature. The precipitated carbide immediately dissolves into the austenite matrix again after martensitic reversion in order to restore the Ms and Mf temperatures to their initial values. The crystallographic orientation of each phase was mapped by means of the electron back scattering diffraction (EBSD) method using a field emission scanning electron microscope. A full fcc-bcc-fcc reversible martensitic transformations cycle was observed. As a result of the specific heat treatment, the austenite that was formed by martensitic reversion remains stable at ambient temperature.
UR - http://www.scopus.com/inward/record.url?scp=84883223081&partnerID=8YFLogxK
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U2 - 10.2355/isijinternational.53.1286
DO - 10.2355/isijinternational.53.1286
M3 - Article
VL - 53
SP - 1286
EP - 1288
JO - ISIJ International
JF - ISIJ International
SN - 0915-1559
IS - 7
ER -