Interaction between Yttria Fully Stabilized Zirconia or Yttria-Zirconia Blended Face-Coat with Ti6Al4V during Investment Casting

Kalenda Mutombo; Christina Kgomo; P. Rossouw

doi:10.4028/www.scientific.net/AMR.1019.302

Paper Titles

Hot Deformation Behavior of Ti-6Al-4V Alloy with a Transitional Microstructure in the Isothermal Hot Compression
p.273

Friction Hydro Pillar Riveting – Alternative Joining Technique for 3.17mm Ti-6Al-4V Sheet
p.280

Influence of Process Heat Input on Static and Dynamic Properties of Friction Stir Welded 3mm Ti6Al4V Alloy
p.287

Investigating the High Temperature Oxidation Behavior of TiAl-Based Alloys with Nickel and Ruthenium Additions
p.294

Interaction between Yttria Fully Stabilized Zirconia or Yttria-Zirconia Blended Face-Coat with Ti6Al4V during Investment Casting
p.302

Alpha Case Characterization of Hot Rolled Titanium
p.311

Chatter Investigation in Titanium Milling
p.318

Austenite Grain Growth Kinetics in a Low C-Mn Steel and a Ti-Nb-V Microalloyed Steel
p.327

Influence of Cooling Path on the Dynamic Transformation of Austenite-to-Ferrite in Low Carbon Manganese Steels
p.333

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1019Interaction between Yttria Fully Stabilized...

Interaction between Yttria Fully Stabilized Zirconia or Yttria-Zirconia Blended Face-Coat with Ti6Al4V during Investment Casting

Abstract:

The interaction between the Ti6Al4V alloy and the mould materials was investigated. The alpha-case was characterized by Vickers hardness tester, optical and scanning electron microscopy equipped with electron dispersive X-ray spectrometry (EDX). X-ray diffraction (XRD) analysis was performed on as cast and on YFSZ or YZ-Blended face-coats. From the experimental results, a distinct alpha-case formation was revealed. The YFSZ led to a thicker and harder alpha-case than the YZ-Blended face-coat. The EDX revealed the presence of Zr and Si elements in both alpha-cases. Therefore, from experimental results and thermodynamic calculations, pure ZrO₂ and SiO₂ may react with Ti.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Advanced Materials Research (Volume 1019)

Pages:

302-310

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1019.302

Citation:

Cite this paper

Online since:

October 2014

Authors:

Kalenda Mutombo*, Christina Kgomo, P. Rossouw

Keywords:

Alpha-Case, Investment Casting, SEM-EDX, Ti-6Al-4V Alloy, X-Ray Diffraction (XRD), Yttria Stabilized Zirconia, Yttria-Zirconia Blended

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] A. Kostov , B. Friedrich, Predicting thermodynamic stability of crucible oxides in molten titanium and titanium alloys, Comput. Mater. Sci. 38 (2006) 374–85.

DOI: 10.1016/j.commatsci.2006.03.006

Google Scholar

[2] K. Lin, C Lin, Interfacial reactions between zirconia and titanium , 39 (2010) 1333–8.

Google Scholar

[3] S.Y. Sung, Y.J. Kim, Alpha-case formation mechanism on titanium investment castings, Mater. Sci. Eng. A., 2005 405. (2005) 173–7.

DOI: 10.1016/j.msea.2005.05.092

Google Scholar

[4] K. Lin, C. Lin, Interfacial reactions between Ti-6Al-4V alloy and zirconia mold during casting, J. Mater. Sci., 34 (1999) 5899–906.

Google Scholar

[5] A.M. Bauristhene, K. Mutombo, W.E. Stumpf, Alpha case formation mechanism in Ti-6Al-4V alloy investment castings using YFSZ shell moulds, J. of the S.A.I.M. M, 113 (2013), 357-361.

Google Scholar