公开(公告)号：US10920301B2

公开(公告)日：2021-02-16

申请号：US15565940

申请日：2016-04-14

申请人： Nippon Light Metal Company, Ltd. ,  Honda Motor Co., Ltd.

发明人： Izumi Yamamoto ,  Kazuhiro Oda ,  Hisayasu Kojima ,  Naoko Sato ,  Ryo Wakabayashi ,  Akito Tanihata

IPC分类号： C22C21/02 ,  B22D27/04 ,  B22D27/20 ,  C22F1/043 ,  B22D21/00 ,  F02F3/00 ,  C22F1/00 ,  B22D17/00 ,  C22C21/04

摘要： An aluminum alloy casting excellent in high temperature strength and thermal conductivity, a method of producing the same, and an aluminum alloy piston for internal combustion engine using this casting. An aluminum alloy casting having a chemical composition comprising Si: 12.0 to 13.5 mass % Cu: 4.5 to 5.5 mass % Mg: 0.6 to 1.0 mass % Ni: 0.7 to 1.3 mass % Fe: 1.15 to 1.25 mass % Ti: 0.10 to 0.2 mass % P: 0.004 to 0.02 mass % and a balance of Al and unavoidable impurities, wherein in an observed field of view of 0.2 mm2, the major axis length of the Al—Fe—Si based crystallites is 100 μm or less by average length of 10 crystallites from the largest down. The method for producing the casting comprising casting a melt of aluminum alloy having the above chemical composition at cooling rate of 100° C./sec or more, then performing aging treatment.

公开(公告)号：US11549461B2

公开(公告)日：2023-01-10

申请号：US16327279

申请日：2016-08-29

申请人： NIPPON LIGHT METAL COMPANY, LTD. ,  ART METAL MFG. CO., LTD.

发明人： Izumi Yamamoto ,  Kazuhiro Oda ,  Hiroshi Horikawa ,  Katsumi Fukaya ,  Takashi Seki ,  Tadashi Watanabe

IPC分类号： C22F1/04 ,  F02F3/00 ,  C22C21/02 ,  C22F1/043

摘要： An aluminum alloy having excellent high temperature strength and thermal conductivity; and an internal combustion engine piston including the alloy. The aluminum alloy includes 11.0-13.0% Si, ≤0.3% Fe, 0.3-2.0% Mg, 2.0-5.0% Cu, 3.0-4.0% Ni, 0.2-1.0% Mn, 0.05-0.4% Cr, and 0.05-0.4% V, with the remainder including aluminum and unavoidable impurities.