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Effect of molybdenum on the microstructure, mechanical properties and corrosion behavior of Ti alloys

  • Eung-Beom Lee , Mi-Kyung Han , Bong-Jun Kim , Ho-Jun Song and Yeong-Joon Park
Published/Copyright: September 15, 2014
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 105 Issue 9

Abstract

In order to study the effect of Mo on the microstructure, mechanical properties and corrosion behavior of commercially pure titanium (cp-Ti), Ti-xMo (x = 5, 10, 15, and 20 wt.%) alloys were investigated. The phase and microstructures were characterized using X-ray diffraction, optical microscopy, scanning electron microscopy and transmission electron microscopy. The results indicated that the Ti-5Mo alloy was mainly composed of α′ phase with a small fraction of α″ phase. The Ti-10Mo was dominated by orthorhombic α″. The Ti-15Mo alloy was mainly composed of α″ phase with a small fraction of β phase. The volume percentage of the β phase increased with increasing Mo content. The Ti-20Mo alloy was mainly composed of β phase. We also investigated the effect of alloying with Mo on the Vickers hardness and corrosion behavior of Ti-xMo alloys. The addition of Mo not only caused hardening of cp-Ti but also improved its oxidation protective ability. Electrochemical results showed that the Ti-xMo alloys exhibited improved corrosion resistance over cp-Ti.

Keywords: Titanium alloys; Ti–Mo alloys; Corrosion; Microstructure; Mechanical properties
* Correspondence address, Professor Yeong-Joon Park, Department of Dental Materials, School of Dentistry, Chonnam National University, Gwangju 500-757, Korea, Tel: +82-62-530-4871, Fax: +82-62-530-4875, E-mail:

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Received: 2014-01-21
Accepted: 2014-04-03
Published Online: 2014-09-15
Published in Print: 2014-09-15

© 2014, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111092
Keywords for this article
Titanium alloys; Ti–Mo alloys; Corrosion; Microstructure; Mechanical properties

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Diffusivities and atomic mobilities of an Sn–Ag–Bi–Cu–Pb melt
  5. Experimental study of the phase relations in the Fe–Cr–Si ternary system at 700°C
  6. Effect of molybdenum on the microstructure, mechanical properties and corrosion behavior of Ti alloys
  7. Mechanism of grain refinement and coarsening in undercooled Ni–Fe alloy
  8. Effects of copper content and liquid separation on the microstructure formation of Co–Cu immiscible alloys
  9. Influence of the solidification temperature range on Gasar structures made from Cu–Mn alloys
  10. Effect of ageing time on mechanical properties and tribological behaviour of aluminium hybrid composite
  11. Microstructure and tensile properties of a friction stir welded Al–Mg–Si alloy
  12. Lüders effect in Al 99.7% extruded via the KoBo method
  13. Reduced graphene oxide nanocomposites with different diameters and crystallinity of TiO2 nanoparticles – synthesis, characterization and photocatalytic activity
  14. Constitutive modelling of mill loads during hot rolling of AISI 321 austenitic stainless steel
  15. X-ray stress measurement with two-dimensional detector based on Fourier analysis
  16. People
  17. People
  18. People
  19. DGM News
  20. Personal
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