Solidification and Interface Reaction of Titanium Alloys in the BaZrO3 Shell-Mould

Chong He Li; Jin He; Chao Wei; Hong Bin Wang; Xiong Gang Lu

doi:10.4028/www.scientific.net/MSF.828-829.106

Paper Titles

Melt Refining Technology of Highly-Contaminated Magnesium Alloy Scraps via a Sequential Refining Process
p.82

Microstructure and Texture Development during Melt Conditioned Twin Roll Casting and Downstream Processing in an AZ31 Magnesium Alloy
p.87

Reducing Non Value Adding Aluminium Alloy in Production of Parts by High Pressure Die Casting Using High Temperature Die Manufacturing Material
p.93

Segregation Characteristics of Rheo-High Pressure Die Cast Al-Alloy 2139 Plates
p.100

Solidification and Interface Reaction of Titanium Alloys in the BaZrO₃ Shell-Mould
p.106

Ultrasonic Melt Processing: Achievements and Challenges
p.112

Analysis of the Cold Compaction Behaviour of TiH₂-316L Nanocomposite Powder Blend Using Compaction Models
p.121

Deformation and Densification Study of Titanium Powder Compact during Powder Forging Using Gurson and Gurson-Tvergaard Criterion
p.129

Determination of Optimum Process for Thermal Debinding and Sintering Using Taguchi Method
p.138

HomeMaterials Science ForumMaterials Science Forum Vols. 828-829Solidification and Interface Reaction of Titanium...

Solidification and Interface Reaction of Titanium Alloys in the BaZrO₃ Shell-Mould

Abstract:

The investment casting technology is one of the major methods to produce the parts of the titanium due to its low production cost. However, the high activity of titanium melt gives rise to the requirement of high chemical stability of shell materials, to avoid or decrease the interfacial reaction between the mould and the melt. In this paper, a novel BaZrO₃ – coated Al₂O₃ shell was first introduced to the investment casting of titanium alloy. The grain size and baking temperature on the properties of the novel mould were investigated, and then the Ti6Al4V and TiNi alloys were successfully casted by means of this shell. The alloy-mould interaction was discussed. The results showed that the mould achieve high mechanical properties when the content of coarse powder was 50% after sintering 4 hours under 1500°C, and the BaZrO₃ coating exhibited an effective barrier to avoid the direct contact between the mould base material and the melt, the thickness of reaction layer of TiNi alloy was about 8 μm, and 17 μm to Ti6Al4V alloy, no refractory particles and elemental diffusion were observed inside the metal. This may imply that BaZrO₃ is a promising candidate material for the investment casting of titanium alloy.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 828-829)

Pages:

106-111

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.828-829.106

Citation:

Cite this paper

Online since:

August 2015

Authors:

Chong He Li*, Jin He, Chao Wei, Hong Bin Wang, Xiong Gang Lu

Keywords:

Interface Reaction, Investment Casting, Shell Mould, Titanium Alloys

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] Q. Ma, Cold compaction and sintering of titanium and its alloys for near-net-shape or preform fabrication, J. International journal of powder metallurgy. 46 (2010) 29-44.

Google Scholar

[2] T. Toshimitsu, T. Kobayashi, T. Ueno, Hiroshi Harada, Consideration of the influence of contamination from oxide crucibles on TiAl cast material, and the possibility of achieving low-purity TiAl precision cast turbine wheels, J. Intermetallics. 31 (2012).

DOI: 10.1016/j.intermet.2012.07.019

Google Scholar

[3] S.R. Wang, P.Q. Guo, L.Y. Yang, Centrifugal precision cast TiAl turbocharger wheel using ceramic mould journal of materials processing technology, J. 204 (2008) 492-497.

DOI: 10.1016/j.jmatprotec.2008.01.062

Google Scholar

[4] R.J. Cui, M. Gao, H. Zhang, S.K. Gong, Interactions between TiAl alloys and yttria refractory material in casting process, J. Journal of Materials Processing Technology. 210 (2010) 1190-1196.

DOI: 10.1016/j.jmatprotec.2010.03.003

Google Scholar

[5] J. Barbosa1, C. S. Ribeiro, O.M.N.D. Teodoro, C. Monteiro, Evaluation of Y2O3 as front layer of ceramic crucibles for vacuum induction melting of TiAl based alloys, J. TMS. (2005) 573-584.

Google Scholar

[6] Q. Jia, Y. Y. Cui , R. Yang, A study of two refractories as mould materials for investment casting TiAl based alloys, J. Journal of Material Science. 41 (2006) 3045-3049.

DOI: 10.1007/s10853-006-6785-3

Google Scholar

[7] Z. Zhang, K. L. Zhu, L. J. Liu, X. G. Lu, G. X. Wu, C. H. Li, Preparation of BaZrO3 crucible and its interfacial reaction with molten titanium alloys. J. Journal of the Chinese ceramic society. 41 (2013) 1278-1283.

Google Scholar

[8] W. Q. Zhu, J. He, D. N. Weier, H. B. Wang, C. H. Li, Preparation of BaZrO3-based mould shell for titanium alloy, J. Special Casting & Nonferrous Alloys. 34 (2014) 1085-1088.

Google Scholar

[9] Z. Zhang, F.Y. Xing, M. Zhu, K.L. Zhu, X.G. Lu, G.X. Wu, C.H. Li, Vacuum Induction Melting of TiNi Alloys Using BaZrO3 Crucibles, J. Materials Science Forum. 765 (2013) 316-320.

DOI: 10.4028/www.scientific.net/msf.765.316

Google Scholar

[10] L.J. Liu, G.Y. Chen, Z. Zhang, X.G. Lu, C.H. Li, Interface Reaction Between Refractory BaZrO3 and TiM(M=Fe, Ni) Melt, J. Hot Working Technology. 42 (2013) 49-54.

Google Scholar

[11] J. He, H. Zhou, W.Q. Zhu, X.G. Lu, C.H. Li, Development of refractories used in investment casting and directional solidification of TiAl alloys, J. Material review A. 28 (2014) 87-92.

Google Scholar