The effect of the magnetic transition of γ austenite phase on γ → ε martensitic transformation in Fe[sbnd]Mn binary alloys was investigated to calm a longstanding controversy over whether or not γ → ε martensitic transformation is terminated at the Néel temperature of γ phase (TN γ), where the paramagnetic-to-antiferromagnetic transition occurs during cooling. Literature review on both martensite start (Ms) temperature and TN γ, experiments, and thermodynamic calculation clearly revealed that the γ → ε martensitic transformation in Fe[sbnd]Mn binary alloys is not terminated at TN γ, but suppressed at temperatures below TN γ due to the high stability of antiferromagnetic γ phase.
Bibliographical noteFunding Information:
This work was supported by POSCO Steel & Green Science ( 4.0017259 ) and Korea Institute for Advancement of Technology (KIAT) grant funded by the Korea Government (MOTIE) ( P0002019 , The Competency Development Program for Industry Specialist). Authors are also thankful to Dr. Joong-Hwan Jun at Korea Institute of Industrial Technology for fruitful discussion.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering