Honda Motor Co., Ltd.

S. S. Aluminum Co., Ltd.

Tohoku University

Mitsubishi Hitachi Power Systems, Ltd.

Tomoki Shiota

Jun Sato

Shinya Imano

Kiyohito Ishida

Shigeki Ueta

Toshihiro Omori

Yasuharu Kamoi

Hiroaki Nishida

Mototsugu Osaki

Satoshi Kato

Nobuhiro Ishizaka

Manamu Nishimoto

Masahiro Hayashi

A gas turbine includes a combustor, an air lead-out member, an outer peripheral cover portion, an inner peripheral cover portion, and a fuel supply unit. A lead-out port of the air lead-out member is located radially outward of one end portion of the combustor. The combustor has a guide wall portion which is formed so as to connect mutually-adjacent combustion cylinders and guides air from an air flow path to an inner space via a communication path. Through holes are formed in the outer peripheral surface of each of the combustion cylinders and open to the inner space to allow air in the inner space to flow into the downstream side of a combustion chamber.

Gas turbine

An Al alloy cast product includes 3.2% to 7.2% by weight of Mg and 0.28% to 0.6% by weight of Sc, and has an Fe content and an Si content, each of 0.1% by weight or less. The cast product contains, in the metal texture, 3% by volume or less of AlSc particle having a particle diameter of 100 nm or less. In production thereof, an Al alloy melt containing 3.2% to 7.2% by weight of Mg and 0.28% to 0.6% by weight of Sc and having an Fe content and an Si content, each of 0.1% by weight or less, is prepared. Next, a casting formed from the melt is subjected to an aging treatment without a solution heat treatment (or a quenching treatment). Then, 3% by volume or less of AlSc particle having a particle diameter of 100 nm or less is precipitated in the metal texture.

Aluminum alloy cast product and method for producing the same

Growing community of inventors

Wako, Japan

Tomoki Shiota