A Study of hBN-Y2O3 Composite Investment for Casting Ti-6Al-4V Alloy


Article Preview

An hBN-Y2O3 composite investment moulding material was developed for investment casting Ti-6Al-4V alloy. Hexagonal boron nitride (hBN) powders plus a few Y2O3 powders were used as the investment mould material to prepare the shell mould with colloidal yttria as binder. The results show that the hBN-Y2O3 composite investment mould can be used to cast Ti-6Al-4V alloy, and has lower cost compared with the traditional yttria based investment mould, because of chemically inert of hexagonal boron nitride and its lower density. Moreover the interfacial reaction between the Ti and hBN-Y2O3 composite shell mould was investigated with measurement of microhardness and scanning electron microscopy (SEM) with energy dispersive (EDS).



Materials Science Forum (Volumes 561-565)

Main Theme:

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee




B. Shen et al., "A Study of hBN-Y2O3 Composite Investment for Casting Ti-6Al-4V Alloy", Materials Science Forum, Vols. 561-565, pp. 1035-1038, 2007

Online since:

October 2007




[1] Xie Chengmu, Titanium and Titanium Casting (China Machine Press 2004).

[2] M. Garfinkle, H.M. Davis: Transactions of the ASM, Vol. 58 (1965), p.521~530.

[3] Jiang B. j: Shell Mould Casting Process (China Machine Press2004).

[4] Xie Chengmu, Wang Ying: Special Casing and Nonferrous Alloys, Vol. 3 (2001), p.40~42.

[5] Zhao Fengming: Chinese Journal of Rare Metals, Vol. 17(1993),p.152~154.

[6] Crimp.M. j, Oppermann.D. a, Krehbiel. k: Journal of Materials Science, Vol. 34 (1999), p.2621~2625.

[7] X.P. Luo, T.W. Guo, Y.G. Oub: Dental Materials Vol. 18 (2002), p.512~515.

[8] Xiaoyan Ma, Changrong Li, Weijing Zhang: Materials Science and Engineering A Vol. 392 (2005), pp.394-402.

Fetching data from Crossref.
This may take some time to load.