US 11,739,404 B2
Method for manufacturing aluminum alloy plastically-processed article
Kazuhiro Suzuki, Miyoshi (JP); Takehito Kobayashi, Okazaki (JP); Masayuki Isogawa, Okazaki (JP); Katsuya Yoshida, Toyota (JP); Chihiro Asai, Toyota (JP); Masahiro Yamada, Toyota (JP); and Masayuki Hori, Kuwana (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP); and KOBE STEEL, LTD., Kobe (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP); and KOBE STEEL, LTD., Kobe (JP)
Filed on Nov. 17, 2020, as Appl. No. 16/950,056.
Claims priority of application No. 2019-225481 (JP), filed on Dec. 13, 2019.
Prior Publication US 2021/0180167 A1, Jun. 17, 2021
Int. Cl. C22F 1/04 (2006.01); C22F 1/00 (2006.01)
CPC C22F 1/04 (2013.01) [C22F 1/002 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for manufacturing an aluminum alloy forged article, comprising:
performing a solution treatment for an aluminum alloy material by heating and maintaining the aluminum alloy material at a solution-treatment temperature T1;
performing forging at a temperature higher than 520° C. for the aluminum alloy material subjected to the solution treatment; and
cooling the forged aluminum alloy material upon completing the forging, and aging the cooled aluminum alloy material, wherein
the method further comprises, before starting the forging, a pre-forging cooling step of cooling the aluminum alloy material subjected to the solution treatment at a temperature of no less than 520° C. while maintaining the aluminum alloy material subjected to the solution treatment in a solution state.