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Evaluation of the reactivity of titanium with mould materials during casting

Misra, RDK and Jacob, KT and Nandy, TK and Saha, RL (1989) Evaluation of the reactivity of titanium with mould materials during casting. In: Bulletin of Materials Science, 12 (5). pp. 481-493.

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Abstract

A methodology for evaluating the reactivity of titanium with mould materials during casting has been developed. Microhardness profiles and analysis of oxygen contamination have provided an index for evaluation of the reactivity of titanium. Microhardness profile delineates two distinct regions, one of which is characterised by a low value of hardness which is invariant with distance. The reaction products are uniformly distributed in the metal in this region. The second is characterised by a sharp decrease in microhardness with distance from the metal-mould interface. It represents a diffusion zone for solutes that dissolve into titanium from the mould. The qualitative profiles for contaminants determined by scanning electron probe microanalyser and secondary ion mass spectroscopy in the as-cast titanium were found to be similar to that of microhardness, implying that microhardness can be considered as an index of the contamination resulting from metal-mould reaction.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Indian Academy of Sciences.
Keywords: Titanium;reactivity;casting;oxygen;microhardness;secondary electron probe microanalysis;secondary ion mass spectrometry
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 01 Mar 2012 06:46
Last Modified: 01 Mar 2012 06:46
URI: http://eprints.iisc.ernet.in/id/eprint/42659

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