Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 634, Issue -, Pages 272-280Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2015.02.095
Keywords
Titanium alloys; Biomedical applications; Microstructure; Mechanical properties; Corrosion
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Funding
- Government of Iraq, Ministry of High Education and Scientific Research
- Indian Council of Cultural Relations (ICCR), New Delhi, India
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This paper presents the results of a study in which influence of different thermo-mechanical processing (TMP) parameters on the mechanical properties and electrochemical behavior of a new metastable beta alloy Ti-20.6Nb-13.6Zr-0.5V (TNZV) was investigated. The TMP comprised of plastic deformation in beta phase field (850 degrees C) followed by solution heat treatments at below b transus temperature (650 degrees C) and cooling at various rates in addition to aging. Depending upon the TMP conditions, a wide range of microstructures with varying spatial distributions and morphologies of equiaxed/elongated alpha, beta phases were attained which allowed a wide range of mechanical and electrochemical properties to be achieved. The corrosion behavior of the alloy used in the present study was evaluated in a Ringer's solution at 37 degrees C using open circuit potential-time and potentiodynamic polarization measurements. The results of the study revealed that amongst different solution treated samples, water quenched (WQ) samples exhibited optimum results of elastic modulus, elongation, corrosion resistance as well as reasonable strength and hence it can be considered to be a potential candidate for biomedical applications. (C) 2015 Elsevier B.V. All rights reserved.
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