DSC study of precipitation in an Al–Mg–Mn alloy microalloyed with Cu


Starink, M.J. and Dion, A. (2004) DSC study of precipitation in an Al–Mg–Mn alloy microalloyed with Cu. Thermochimica Acta, 417, (1), 5-11. (doi:10.1016/j.tca.2004.01.013).

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Description/Abstract

Power compensation differential scanning calorimetry (DSC) has been employed to detect and analyse precipitation reactions in an Al–1.3Mg–0.4Mn and an Al–1.3Mg–0.4Mn–0.07Cu alloy in which very small amounts of precipitate, less than 0.3 at.%, are expected to form. Due to the very small heat effects, baseline instability and drift significantly interfere with the measurements. After repeated experiments and careful baseline correction it is demonstrated that in the Cu containing alloy, ageing at 170 °C causes the appearance of two endothermic effects: for 2 days ageing a small dissolution effect appears at about 230 °C, whilst for 7 and 21 days ageing a dissolution effect peaking appears at about 300 °C. The temperature range of the latter is consistent with S phase dissolution.

Item Type: Article
ISSNs: 0040-6031 (print)
Related URLs:
Keywords: dsc, thermal analysis, precipitation, 3xxx alloy, s phase
Subjects: T Technology > TN Mining engineering. Metallurgy
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences
ePrint ID: 22749
Date Deposited: 23 Mar 2006
Last Modified: 27 Mar 2014 18:12
URI: http://eprints.soton.ac.uk/id/eprint/22749

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