Effects of solution treating on microstructural and mechanical properties of a heavily deformed new biocompatible Ti-Nb-Zr-Fe alloy

4Citations
Citations of this article
6Readers
Mendeley users who have this article in their library.

Abstract

© 2018 by the authors. Licensee MDPI, Basel, Switzerland. The effects of heavy cold plastic deformation by rolling on microstructural features and mechanical properties of Ti-25Nb-6Zr-1.7Fe (wt %) biocompatible alloy (TNZF) were studied. After a preliminary alloy processing, a heavy plastic deformation by cold-rolling (CR) with a total relative degree of plastic deformation of 90% (equivalent plastic strain, ε = 2.42) and a subsequent solution heat treatment (CR+ST) at 900 °C for 0.6 ks/water quenching were applied and then investigated. The CR and CR+ST states have microstructures consisting of mixtures of β''-Ti phases and α''-Ti. The alloy in CR state shows a pronounced deformation texture, with highly deformed and elongated β-Ti grains, exhibiting internal highly fragmented areas, with shear lines at about 45° and a sub-micron/nanocrystalline fine dispersed α''-Ti phase. The alloy in CR+ST state has completely recrystallized equiaxed polyhedral β''-Ti grains, with average grain size close to 52 µm and a sub-micron/nanocrystalline fine dispersed α''-Ti phase. Recorded mechanical properties, for both CR and CR+ST states, show quite similar values for the yield strength (σ 0.2 ), ultimate tensile strength (σ UTS ) and Vickers microhardness (HV0.1) for CR state (σ 0.2 = 603 MPa, σ UTS = 1282 MPa and 287 HV0.1) in comparison with CR+ST state (σ 0.2 = 598 MPa, σ UTS = 1256 MPa and 256 HV0.1). Values for the modulus of elasticity (E) are lower (E = 72 GPa for CR state and E = 61 GPa for CR+ST state) than those for conventional biocompatible alloys (E ~ 110 GPa).

Cite

CITATION STYLE

APA

Cojocaru, V. D., & Şerban, N. (2018). Effects of solution treating on microstructural and mechanical properties of a heavily deformed new biocompatible Ti-Nb-Zr-Fe alloy. Metals, 8(5). https://doi.org/10.3390/met8050297

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free