FABRICATION OF A Ni3Al/Al2O3UNIDIRECTIONAL COMPOSITE BY PRESSURE CASTING
- 1 January 1988
- journal article
- research article
- Published by Taylor & Francis in Advanced Materials and Manufacturing Processes
- Vol. 3 (1) , 57-78
- https://doi.org/10.1080/08842588708953196
Abstract
A gas pressure liquid metal infiltration technique for producing fiber reinforced Ni3Al/Al2O3 and Ni3Al/Al2O3 composites has been described. Composite bars of 9.5 mm diameter, 150 mm long were produced. It was found necessary to add 0.5 at.%Ti to both Ni3Al and NiAl alloys to obtain adequate wetting. There was a strong tendency for liquid metal infiltration along one side of the fibers causing a shift of the fibers to the opposite side. No interface reaction zone was observed at optical magnifications up to 1000X. A composite of Ni3Al containing 33 volume percent of FP fibers fractured at 890 MPa which is approximately 3 times the yield strength of the matrix IC-50(21.73A1-0.34Zr-0.IB-Balance Ni at.%) + 0.5 at. %Ti.Keywords
This publication has 7 references indexed in Scilit:
- The squeeze infiltration process for fabrication of metal-matrix compositesMetallurgical Transactions A, 1987
- Improved Strength and Ductility of Ni3Al by Boron Modification and Rapid SolidificationMetallurgical Transactions A, 1984
- Ordered Alloys for High Temperature ApplicationsMRS Proceedings, 1984
- A method for fabrication of aluminum-alumina compositesMetallurgical Transactions A, 1982
- Experimental Study on the Fabrication of Fiber Reinforced Aluminium by Squeeze CastingBulletin of JSME, 1982
- Effect of Nature of Surfaces on Wetting of Sapphire by Liquid AluminumJournal of the American Ceramic Society, 1968
- The operative slip system and general plasticity of NiAl-IIActa Metallurgica, 1966