Intermetallic eutectic alloys in the Ni-Al-Zr system with attractive high temperature properties

Tiwary, Chandrasekhar and Gunjal, Vilas V. and Banerjee, Dipankar and Chattopadhyay, Kamanio (2015) Intermetallic eutectic alloys in the Ni-Al-Zr system with attractive high temperature properties. In: 2nd European Symposium on Superalloys and their Applications, MAY 12-16, 2014, Giens, FRANCE.

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Abstract

We describe a group of alloys with ultrahigh strength of about 2 GPa at 700 degrees C and exceptional oxidation resistance to 1100 degrees C. These alloys exploit intermetallic phases with stable oxide forming elements that combine to form fine nanometric scale structures through eutectic transformations in ternary systems. The alloys offer engineering tensile plasticity of about 4% at room temperature though both conventional dislocation mechanisms and twinning in the more complex intermetallic constituent, along with slip lengths that are restricted by the interphase boundaries in the eutectics.

Item Type:	Conference Proceedings
Series.:	MATEC Web of Conferences
Publisher:	E D P SCIENCES
Additional Information:	2nd European Symposium on Superalloys and their Applications, Giens, FRANCE, MAY 12-16, 2014
Keywords:	Copy right for this article belongs to the E D P SCIENCES, 17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A, FRANCE
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	29 Apr 2015 06:00
Last Modified:	29 Apr 2015 06:00
URI:	http://eprints.iisc.ac.in/id/eprint/51463

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