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Effect of indium addition on microstructural, mechanical and oxidation properties of suction cast Nb-Si eutectic alloy

Tiwary, CS and Kashyap, S and Chattopadhyay, K (2013) Effect of indium addition on microstructural, mechanical and oxidation properties of suction cast Nb-Si eutectic alloy. In: Materials Science and Technology, 29 (6). pp. 702-709.

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Official URL: http://dx.doi.org/10.1179/1743284713Y.0000000203

Abstract

The paper reports effect of small ternary addition of In on the microstructure, mechanical property and oxidation behaviour of a near eutectic suction cast Nb-19.1 at-%Si-1.5 at-%In alloy. The observed microstructure consists of a combination of two kinds of lamellar structure. They are metal-intermetallic combinations of Nb-ss-beta-Nb5Si3 and Nb-ss-alpha-Nb5Si3 respectively having 40-60 nm lamellar spacings. The alloy gives compressive strength of 3 GPa and engineering strain of similar to 3% at room temperature. The composite structure also exhibits a large improvement in oxidation resistance at high temperature (1000 degrees C).

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Maney Publishing.
Keywords: Intermetallics; Phase Transformation; Brittleness; Ductility; Casting; Microscopy
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Francis Jayakanth
Date Deposited: 21 Jun 2013 05:04
Last Modified: 21 Jun 2013 05:04
URI: http://eprints.iisc.ac.in/id/eprint/46717

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