Effect of carbon and Ti on γ ↔ ε martensitic transformation behavior and damping capacity is investigated in an Fe-17Mn alloy. The suppressive force of carbon against γ → ε transformation increase linearly with an increase in its content, lowering Ms temperature and volume fraction of ε martensite. Carbon deteriorates damping capacity by reducing the area of γ/ε boundaries and mobility of the boundaries contributing to anelastic deformation. The reduction in the mobility of the boundaries is accelerated when carbon-containing alloy is aged at higher temperatures than room temperature. The effect of Ti on damping capacity is found to be beneficial in carbon-containing alloy, which is attributed to the depletion of carbon solute due to the formation of TiC.
Bibliographical noteFunding Information:
The authors wish to express their grateful thanks to the Ministry of Science and Technology in Korea for their NRL Project and the financial support of this work.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering