The Paton Welding Journal, 2003, №05

2003 №05 (01)

2003 №05 (03)

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The Paton Welding Journal, 2003, #5, 6-12 pages

Structure and properties of welded joints of nickel-based heat-resistant alloy

A.A. Slivinsky¹, P. Veit²

¹Institute of Joining and Beam Technologies, Otto-von-Guericke University, Magdeburg, Germany
²Institute of Experimental Physics, Otto-von-Guericke University, Magdeburg, Germany

Abstract
Results of metallographic examinations of different regions of the NiCr25FeAlY high-nickel alloy welded joints, made by tungsten electrode in inert gas, consumable electrode in mixture of gases and under the flux layer, are given. Susceptibility of the alloy to the formation of hot cracks was evaluated and the presence of ductility dip in it near 700°C temperature after heat treatment was found. The relationship was established between the decreased ductility of the alloy and formation of phase and chemical heterogeneity.
Keywords: arc welding (TIG, MAGMS, SAW, MMAW), high-nickel alloy, welded joints, structure, technological strength, curve of ductility

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Suggested Citation

A.A. Slivinsky, P. Veit (2003) Structure and properties of welded joints of nickel-based heat-resistant alloy. The Paton Welding J., 05, 6-12.

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