Revision Of The Solvus Limit Of Al-Mg2Si Pseudo Binary Phase Diagram

The Al-Mg2Si pseudo-binary phase diagram is one of the most widely used tool in the aluminum industry for temperature determination of solubility and homogenization in several semi-manufactured products of aluminum 6xxx alloys series. This diagram has been historically used in the redraw rod manufacturing process for electrical purposes to determine the rod coils solubility temperature of AA6101 and AA6201 alloys. The industrial process suggests a modification in the solvus curves established in this diagram. This work established the solubility temperature of commercial AA6201 alloy by means of electrical resistance measurements and mechanical testing of heat treated samples at different temperatures. Findings suggest that the solvus limit of the AA6201 alloy is at a higher temperature than the solvus limit of the commonly accepted diagram of Al-Mg2Si. (C) 2015 The Authors. Published by Elsevier Ltd.