High yield strength bulk Ti based bimodal ultrafine eutectic composites with enhanced plasticity

Dinesh K. Misra, Rajib K. Rakshit, Manju Singh, P. K. Shukla, K. M. Chaturvedi, B. Sivaiah, B. Gahtori, Ajay Dhar, S. W. Sohn, W. T. Kim, D. H. Kim

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Abstract

Ti-based bulk metallic glass (BMGs) and their bimodal composites are linked with the pronounced strain hardening after yielding but with much low value of strength. Therefore, developing Ti-based alloys with high yield strength and high plasticity is the current challenge. Here, we report the synthesis of ultra-fine grained bulk (UFG) (Ti0.705Fe0.295)100-xGax (0≤x≤2) bimodal eutectic composites with not only high strength and larger plasticity but also with high yield strength which is one of the important mechanical property for structural application. Reasonably high strength, high yield strength, strain to failure ratio, and enhanced plasticity of ~7±0.8% was observed in (Ti70.5Fe29.5)98Ga2 composite which is superior than Ti-based BMGs and bimodal composites. Modification of degree of eutectic structure refinement and volume fraction of constituent phases with the addition of Ga are the crucial factors in enhancing the mechanical properties of Ti-Fi-(Ga) composites.

Original languageEnglish
Pages (from-to)551-556
Number of pages6
JournalMaterials and Design
Volume58
DOIs
Publication statusPublished - 2014 Jun

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Misra, D. K., Rakshit, R. K., Singh, M., Shukla, P. K., Chaturvedi, K. M., Sivaiah, B., Gahtori, B., Dhar, A., Sohn, S. W., Kim, W. T., & Kim, D. H. (2014). High yield strength bulk Ti based bimodal ultrafine eutectic composites with enhanced plasticity. Materials and Design, 58, 551-556. https://doi.org/10.1016/j.matdes.2014.02.016