High-strength ultrafine-grained titanium-based alloys with large plasticity
Document Type
Book Chapter
Publisher
Nova Science Publishers
Faculty
Faculty of Health, Engineering and Science
School
School of Engineering
RAS ID
15872
Abstract
In order to simultaneously enhance the strength and plasticity in nanostructured / ultrafine-grained alloys, a strategyof formation of multiple length-scale microstructure (or called bimodal composite microstructure) has been developed recently. This chapter gives a brief overview of the alloy development, microsctructure properties relationship, and deformation behavior innanostructured / ultrafine-grained Ti-Fe-based alloys obtained through a simple single-step solidification process. In geneal, different lengthscale phases, i.e. micrometer-sized primary phases (dendrites or eutectic) embedded in an nanostructured / ultrafine-grained eutectic matrix, are formed in the as-cast Ti-Fe-based alloy systems. These as-prepared nanostructured / ultrafine-grained Ti-Fe-based materials exhibit an excellent combination of strength and plasiticity, i.e. high strength of exceeding 2000 MPa, large plasticity up to 20% and high specific strength. The relationship between microstructural charactersitcsand the mechanical behavior and plastic deformation behavior in the nanostructured / ultrafine-grained Ti-Fe-based alloys have been detailed discussed.
Comments
Zhang, L. (2013). High-strength ultrafine-grained titanium-based alloys with large plasticity. In L. Zhang, and C. Yang (Eds.). Titanium alloys: Formation, characteristics and industrial applications (pp. 275-302). Hauppauge, NY: Nova Science Publishers. Original book available here