Bulk-type (Ti0.65Fe0.35)100-xGax (x = 0, 2, 4 at.%) ultrafine composites with high strength and plasticity have been prepared. The composites have a hypereutectic microstructure with primary FeTi phase and (β-Ti + FeTi) eutectic matrix. The composites exhibit high fracture strength of 2290-2766 MPa and large plasticity of 4.8-6.5% under compression. Refinement of eutectic structure and control of relative areal fraction of the constituent phases are the crucial factors in determining the mechanical properties.
Bibliographical noteFunding Information:
This work was supported by DAPA and ADD, and also supported by the Global Research Laboratory program of Korea Ministry of Science and Technology. One of the authors (D. K. Misra) gratefully acknowledges the financial support provided by the Korean Ministry of Education under grant BK-21 programmed.
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry