HEAT TREATMENT METHOD FOR REDUCTION OF SURFACE ROUGHNESS OF AL-MG ALLOY SHEET FOR AUTOMOBILE

摘要

The present invention is an aluminum-relates to a method of heat-treating a magnesium alloy plate, after cold rolling, AA5182 aluminum-final annealing-car aluminum for for surface winding suppressed for suppressing the surface winding occurring during the molding of a magnesium alloy plate, magnesium alloy by slow cooling after the re-heat treatment step within a given temperature range and time range to target the plate, as the employment of magnesium is precipitated, and the growth and the crystal grains reduces the curved surface generated by the dynamic strain aging at the time of sheet forming, the forming is easy relates to a heat treatment method of the magnesium alloy plate material - and for automotive aluminum surface for winding inhibition that can be obtained after forming a high-strength characteristics due to the work hardening.