Based on the previous investigation on the solidification evolution of the Ti-Fe-Sn bimodal nanoeutectic composites, Ti-Fe-Sn bimodal nanoeutectic composites containing the different degree of microstructural heterogeneity such as volume fraction have been successfully fabricated in order to elucidate the deformation and fracture behaviors. Compressive tests at room temperature show that the yield strength and plasticity gradually decrease with increasing the TiFe + Ti 3Sn eutectic structure. Detailed investigations on the effect of the bimodal eutectic structure on the mechanical properties suggest that multiple nano-scale twins on the β-Ti, constituting the β-Ti + TiFe eutectic, lead to an increase the strength. Moreover, it is believed that the interface between the eutectic structures, size and morphology of the eutectic colony are important factors for improvement of the plastic deformation of the Ti-Fe-Sn bimodal nanoeutectic composites.
Bibliographical noteFunding Information:
This work was supported by the Global Research Laboratory (GRL) Program and the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) of Korea Ministry of Education, Science and Technology (No. 2010-0013854 ). One of the authors, Y. Seo, specially thanks to the support from Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2010-0020207 ).
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry