Abstract
A regular solution model for the difference of the chemical free energy between γ and ε phases during γ → ε martensitic transformation in the Fe-Mn binary system has been reexamined and partly modified based on many articles concerning the Ms and As temperatures of Fe-Mn alloys. Using the regular solution model, the measured Ms temperatures, and a thermodynamic model for the stacking fault energy (SFE) of austenite (γ), the driving force for γ→ ε martensitic transformation, and the SFE of γ have been calculated. The driving force for γ → ε martensitic transformation increases linearly from -68 to -120 J/mole with increasing Mn content from 16 to 24 wt pet. The SFE of γ decreases to approximately 13 at. pct Mn and then increases with increasing Mn content, which is in better agreement with Schumann's result rather than Volosevich el al.'s result.
| Original language | English |
|---|---|
| Pages (from-to) | 355-360 |
| Number of pages | 6 |
| Journal | Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science |
| Volume | 31 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2000 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
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Driving force for γ → ε martensitic transformation and stacking fault energy of γ in Fe-Mn binary system. / Lee, Young-Kook; Choi, Chong Sool.
In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 31, No. 2, 01.01.2000, p. 355-360.Research output: Contribution to journal › Article
TY - JOUR
T1 - Driving force for γ → ε martensitic transformation and stacking fault energy of γ in Fe-Mn binary system
AU - Lee, Young-Kook
AU - Choi, Chong Sool
PY - 2000/1/1
Y1 - 2000/1/1
N2 - A regular solution model for the difference of the chemical free energy between γ and ε phases during γ → ε martensitic transformation in the Fe-Mn binary system has been reexamined and partly modified based on many articles concerning the Ms and As temperatures of Fe-Mn alloys. Using the regular solution model, the measured Ms temperatures, and a thermodynamic model for the stacking fault energy (SFE) of austenite (γ), the driving force for γ→ ε martensitic transformation, and the SFE of γ have been calculated. The driving force for γ → ε martensitic transformation increases linearly from -68 to -120 J/mole with increasing Mn content from 16 to 24 wt pet. The SFE of γ decreases to approximately 13 at. pct Mn and then increases with increasing Mn content, which is in better agreement with Schumann's result rather than Volosevich el al.'s result.
AB - A regular solution model for the difference of the chemical free energy between γ and ε phases during γ → ε martensitic transformation in the Fe-Mn binary system has been reexamined and partly modified based on many articles concerning the Ms and As temperatures of Fe-Mn alloys. Using the regular solution model, the measured Ms temperatures, and a thermodynamic model for the stacking fault energy (SFE) of austenite (γ), the driving force for γ→ ε martensitic transformation, and the SFE of γ have been calculated. The driving force for γ → ε martensitic transformation increases linearly from -68 to -120 J/mole with increasing Mn content from 16 to 24 wt pet. The SFE of γ decreases to approximately 13 at. pct Mn and then increases with increasing Mn content, which is in better agreement with Schumann's result rather than Volosevich el al.'s result.
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U2 - 10.1007/s11661-000-0271-3
DO - 10.1007/s11661-000-0271-3
M3 - Article
AN - SCOPUS:0033908633
VL - 31
SP - 355
EP - 360
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
SN - 1073-5623
IS - 2
ER -