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Effect Of Electroslag Refining On Microstructure And Mechanical-Properties Of Is-7670 Alloy

Sampath, V and Dwarakadasa, ES (1992) Effect Of Electroslag Refining On Microstructure And Mechanical-Properties Of Is-7670 Alloy. In: Scandinavian Journal of Metallurgy, 21 (6). pp. 266-278.

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Official URL: http://cat.inist.fr/?aModele=afficheN&cpsidt=49228...

Abstract

The electroslag refining technique is one of the modern tools which is capable of imparting superior mechanical and chemical properties to metals and alloys. Refining usually results in the elimination of a number of casting or solidification defects, such as shrinkage porosity, gas porosity, pipe, micro- and macro segregation. Remelting also imparts a directional grain structure apart from refining the size of the inclusions, grains and precipitates. This technique has over the years been used widely and successfully to improve the mechanical and chemical properties of steels and alloy steels which are used in the nuclear, missile, aerospace and marine industries for certain critical applications. But the application of ESR to aluminium and its alloys is only recent. This paper investigates the response of an aluminium alloy (corresponding to the Indian Specification IS: 7670) to ESR. Based on theoretical considerations and microstructural evidence it elucidates how ESR of aluminium alloys differs from that of ferrous alloys. The improvement achieved in mechanical properties of the alloy is correlated with the microstructure.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to John Wiley and Sons.
Keywords: Aluminum Alloys;Cooling Rate;Electroslag Refining; Inclusion;Intermetallic;Mechanical Properties;Melting Point;Microstructure;Particles;Peakaging;Precipitate Particles;S'-Phase;Thermal Gradients.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 25 Jan 2011 04:16
Last Modified: 25 Jan 2011 04:16
URI: http://eprints.iisc.ernet.in/id/eprint/35195

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