To provide an aluminum alloy sheet material subjected to solution heat treatment which has good paint bake response when being subjected to the conventional painting and baking cycle.
A process of producing a solution heat treated aluminum alloy sheet material comprises subjecting hot-or cold-rolled aluminum alloy sheet to solution heat treatment followed by quenching and, before substantial age hardening has taken place, subjecting the alloy sheet material to one or more subsequent heat treatments involving heating the material to a peak temperature in the range of 100 to 300C. (preferably 130 to 270C), holding the material at the peak temperature for a period of time less than about 1 minute, and cooling the alloy from the peak temperature to a temperature of 85C or less. The sheet material treated in this way can by used for automotive panels and has good a good "paint bake response", i.e. an increase in yield strength from the T4 temper to the T8X temper upon painting and baking of the panels.
| JPH07331325 | HEATING TREATMENT OF QUENCHING |
| JPS61136663 | MANUFACTURE OF COMPOSITE SUPERCONDUCTOR |
| WO/2017/077929 | ALUMINUM ALLOY PLATE FOR BUS BARS, WHICH HAS EXCELLENT LASER WELDABILITY |
WHEELER MICHAEL J
BULL MICHAEL JACKSON
MAROIS PIERRE H
| JPH04259358A | 1992-09-14 | |||
| JPH06240424A | 1994-08-30 | |||
| JPH06272002A | 1994-09-27 | |||
| JPH0797667A | 1995-04-11 | |||
| JPH04259358A | 1992-09-14 | |||
| JPH06240424A | 1994-08-30 | |||
| JPH06272002A | 1994-09-27 | |||
| JPH0797667A | 1995-04-11 |
Kyousei Tamura
Kitahara Yasuhiro