Paper Titles
Structure of Composite Layers Reinforced with SiC Particles Obtained by Electrochemical Deposition
p.265
Influence of Ion Nitriding Process Parameters on the Microstructure, Hardness and Thermal Shock Behaviour of X3CrNiMo17-13-3 Stainless Steel
p.269
NiAl Oxidation and Corrosion Resistant Coatings Obtained by Thermal Spraying
p.273
The Influence of the Metal Head on the HTC Evolution in the Sand Casting of A357
p.279
Obtaining of Ni Base Intermetallic Alloys by Solidification Control
p.283
Inoculating Influence of Re-Carburizers in Grey Cast Iron
p.287
Influence of Magnesium on Structure and Properties of Al-Si Alloy
p.291
New Quaternary Type of Al-Sr-Ti-B Master Alloy for Grain Refining and Modifying of Al-Si
p.295
Studies Regarding the Hardness and Microhardness of Al-Si Alloys Solidified in Ultrasound Field
p.299

Obtaining of Ni Base Intermetallic Alloys by Solidification Control

Article Preview

Abstract:

Directional solidification techniques have been applied to produce Ni based intermetallic alloys with preferentially oriented columnar crystals extended along the complete length and parallel to the solidification direction. Enhanced ductility is expected from such alloys. In this paper we present the research results concerning the application of this technique to some complex Ni3Al- Fe-B alloys obtained from compacted mixtures of elemental powders. The corresponding master alloys have been obtained in a vacuum induction furnace by the known Exo-Melt process [1]. The directional solidification of these alloys was subsequently performed on cylindrical samples, at two solidification rates, 30 and 15 mm/h. The influence of the rate and composition used on the dimensional variations, densities, microstructure, constituent phases and lattice parameters, as well as on the surface chemical composition have been documented and are presented in the paper.

You might also be interested in these eBooks
Materials and Technologies (4th MATEHN) View Preview

Info:

Periodical:

Advanced Materials Research (Volume 23)

Pages:

283-386

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.23.283

Citation:

Cite this paper

Online since:

October 2007

Authors:

Mariana Lucaci, Radu L. Orban, M. Lazarescu, Stefania Gavriliu, Magdalena Lungu, Delia Patroi

Keywords:

Directional Solidification, Intermetallic, Ni3Al, Ni3Al Alloyed with B and Fe

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] S. C. Deevi and V. K. Sikka: Intermetallics 5 (1997), p.17.

Google Scholar

[2] P. R. Munroe et al.: Material Science and Engineering, A 325 (2002), p.1.

Google Scholar

[3] J. G. Barriocanal, P. Pérez, G. Garcés, P. Adeva: Intermetallics 14 (2006), p.355.

Google Scholar

[4] G. K. Dey: Sadhana, Vol 28, Part 1&2 (2003), p.247.

Google Scholar

[5] J. H. Westbrook and R. L. Fleischer: Intermet. Compounds, Vol. 3, Wiley & Sons (2000), p.15.

Google Scholar

[6] PDF file 09-0097.

Google Scholar