Misra, Dinesh K. and Rakshit, Rajib K. and Singh, Manju and Shukla, P. K. and Chaturvedi, K. M. and Sivaiah, B. and Gahtori, B. and Dhar, Ajay and Sohn, S. W. and Kim, W. T. and Kim, D. H. (2014) High yield strength bulk Ti based bimodal ultrafine eutectic composites with enhanced plasticity. Materials & design, 58. pp. 551-556. ISSN 0261-3069

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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 Ga-x(x) (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 similar to 7 +/- 0.8% was observed in (Ti70.5Fe29.5)(98)Ga-2 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.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Elsevier.
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	12 Oct 2015 10:59
Last Modified:	12 Oct 2015 10:59
URI:	http://npl.csircentral.net/id/eprint/1329

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