Tensile Properties and Hot-Tearing Tendencies of 3xxx Alloys

Abstract:

A set-up for tensile testing in the mushy zone allowing for studies of semi-solid mechanical behavior is available at SINTEF. A hot-tearing experimental set-up has recently been developed allowing for investigation of the hot-tearing susceptibility of industrial aluminium alloys and effects of e.g. alloying composition and grain-refiner. Load and temperature are registered during constrained solidification giving information on the mechanical behavior of the alloy during solidification. Two crack-prone alloys in the 3xxx-series (A and B) have been investigated using both techniques and the results analyzed using information about solidification path from a thermo-physical model. Alloy B is found to be mechanically weaker in the interval most susceptible to hot-tearing in agreement with cast-house experience. This study shows that the experimental techniques combined with thermo-physical modeling and characterization allow for a better understanding of the hot-tearing sensitivity of the alloys. 

• Periodical: Materials Science Forum (Volumes 794-796)
• Pages: 95-100
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.794-796.95
• Online since: June 2014
• Authors: Arne Nordmark, Kjerstin Ellingsen*, Anders U. Johansson, Mohammed M'Hamdi, Anne Kvithyld, Andrew Marson, Amin Azar
• Keywords: Hot-Tearing, Semi-Solid Tensile Properties

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DOI: 10.1007/s11661-999-0025-9