Title

Ultrafine grained Ti-based composites with ultrahigh strength and ductility achieved by equiaxing microstructure

Document Type

Journal Article

Publisher

Elsevier

Faculty

Health, Engineering and Science

School

School of Engineering

RAS ID

19162

Comments

This article was originally published as: Liu, L. H., Yang, C., Wang, F., Qu, S. G., Li, X. Q., Zhang, W. W., & Zhang, L. C. (2015). Ultrafine grained Ti-based composites with ultrahigh strength and ductility achieved by equiaxing microstructure. Materials & Design, 79, 1-5. Original article available here

Abstract

Ultrafine grained Ti-based composites with equiaxed microstructure were fabricated by sintering and crystallizing from glassy powder precursors. The optimized composites exhibit ultimate strength of 2585. MPa and plasticity of exceeding 30%, occupying an unprecedented regime in the strength and ductility space of advanced titanium alloys. Dislocation pile-ups induced by precipitated phases and slip band propagation in the β-Ti matrix are the main reasons for the ultrahigh strength and plasticity respectively. The results provide an innovative route for fabricating titanium alloys with higher mechanical properties.

DOI

10.1016/j.matdes.2015.04.032

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