Paper Titles
On-Line Aging to Improve the Tensile Strength and Conductivity of Cold-Drawing AA6201 Wires
p.349
From Angel Food Cake to Porous Titanium – A Novel Powder Metallurgical Approach for Metallic Foam Utilizing Food Processing and Ceramic Processing Techniques
p.353
Resistance of Thin Al Foam Panels to Deep Indentation
p.357
Preparation of the Al-Cu-Co and Al-Cu-Ni Ternary Intermetallic Powders via a Solid-Liquid Reaction Ball Milling Technique
p.363
Preparation of Ti-Al Intermetallics by Aluminum Melt Infiltration-Diffusion Annealing Technique
p.367
Oxidation Behavior and Pack Siliconized Oxidation-Resistant Coatings of an Nb-Based Ultrahigh Temperature Alloy
p.371
Microstructure and Mechanical Properties of Dual Multi-Phase Intermetallic Alloys Composed of Geometrically Close Packed Ni3X Structures
p.375
Development of a Second Generation TiAl Turbocharger
p.379
Microstructure and Deformation Behavior of Lamellar Ti-Rich TiAl Crystal with Lotus-Type Aligned Pores
p.383

Preparation of Ti-Al Intermetallics by Aluminum Melt Infiltration-Diffusion Annealing Technique

Article Preview

Abstract:

A novel process, of melt infiltration combined with diffusion annealing technique, was developed to prepare Ti-Al intermetallics at temperature lower than ingot melting point. In this process, a porous Ti preform was firstly fabricated and the Al melt was reheated to temperature slightly higher than Al melting point to infiltrate the porous Ti preform by capillary force spontaneously. After long-time high-temperature diffusion annealing, Ti-Al intermetallic compound can be finally synthesized from the bulk Tip+melt Al via diffusion. As example, Ti-46Al intermetallics has been fabricated, and the microstructures and the phases of the as-synthesized intermetallics were characterized by XRD and SEM. The compressive behavior of the as-synthesized Ti-Al at elevated temperatures has been studied and the reaction mechanism involved in the process finally analyzed.

You might also be interested in these eBooks
PRICM 6 View Preview

Info:

Periodical:

Materials Science Forum (Volumes 561-565)

Pages:

367-370

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.561-565.367

Citation:

Cite this paper

Online since:

October 2007

Authors:

Li Qing Chen, Ji Jie Wang, Lin Chen

Keywords:

Diffusion Annealing, Intermetallic, Melt Infiltration, Reaction Mechanism, TiAl

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] G.L. Chen and J.P. Lin: Fundamentals of Physical Metallurgy (Metallurgical Industrial Press, Beijing 1999).

Google Scholar

[2] X.J. Xu, J.P. Lin, Y.L. Wang, J.F. Gao, Z. Lin and G.L. Chen: J. Alloys and Compounds Vol. 414(2006), p.131.

Google Scholar

[3] J. Mackowiak and L.L. Shreir: J. Less-common Met. Vol. 1(1959), p.456.

Google Scholar

[4] F.J.J. Van Loo and G.D. Rieck: Acta Metall. Vol. 21(1973), p.73.

Google Scholar

[5] J.C. Rawers, W.R. Wrzesinski, E.K. Roub and R.R. Brown: Mater. Sci. Tech. Vol. 6(1990), p.187.

Google Scholar

[6] M. Sujata, S. Bhargava and S. Sangal: J. Mater. Sci. Lett. Vol. 16(1997), p.1175.

Google Scholar

[7] H.S. Park, K.L. Park and S.K. Hwang: Mater. Sci. Eng. A Vol. 329-331(2002), p.50.

Google Scholar

[8] Y.J. Wu and L. Tao: Rare Met. Mater. Eng. Vol. 25(1996), p.17.

Google Scholar