Toyota Jidosha Kabushiki Kaisha

Kobe Steel, Ltd.

Chihiro Asai

Takehito Kobayashi

Kazuhiro Suzuki

Masahiro Yamada

Masayuki Hori

Masayuki Isogawa

Katsuya Yoshida

Hajime Kawabata

A method of manufacturing an aluminum alloy forged material from a mixture containing an aluminum scrap, an aluminum virgin metal, and an additive element includes the following steps: a heating and melting step of heating and melting the mixture, a forging step of forging the mixture after heating and melting, and an aging treatment step of performing aging treatment on a material after the forging step under a condition that an aging temperature and an aging time are as follows: (aging temperature, aging time)=within a range of a region surrounded by (185, 4), (185, 7), (200, 1), and (200, −2/25x+8).

Method of manufacturing aluminum alloy forged material

An object of the present disclosure is to provide a method for manufacturing an aluminum alloy plastically-processed article, capable of preventing a burning crack from occurring due to processing heat generated during plasticity processing while maintaining a solution-treatment temperature of an aluminum alloy material for ensuring a mechanical strength thereof. A method for manufacturing an aluminum alloy plastically-processed article, includes a step of performing a solution treatment for an aluminum alloy material by heating and maintaining the aluminum alloy material at a solution-treatment temperature, a step of performing plasticity processing for the aluminum alloy material subjected to the solution treatment, and steps of cooling the plastically-processed aluminum alloy material at a time at which the step of the plasticity processing is completed, and aging the cooled aluminum alloy material. The method further includes pre-plasticity-processing cooling step of cooling the aluminum alloy material subjected to the solution treatment.

Method for manufacturing aluminum alloy plastically-processed article

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Toyota, Japan

Chihiro Asai