US 11,745,290 B2
Metal member-welded structure and method of manufacturing metal member-welded structure
Koki Sugimura, Osaka (JP); Tetsuya Kuwabara, Osaka (JP); Kazuhiro Goto, Osaka (JP); Hiroki Hirai, Yokkaichi (JP); Tetsuji Tanaka, Yokkaichi (JP); Junichi Ono, Yokkaichi (JP); Takuji Otsuka, Yokkaichi (JP); Kenji Miyamoto, Yokkaichi (JP); Osamu Nakayama, Yokkaichi (JP); Kazuaki Hamada, Yokkaichi (JP); and Kazuhiro Washio, Yokkaichi (JP)
Assigned to Sumitomo Electrical Industries, Ltd., Osaka (JP); AutoNetworks Technologies, Ltd, Yokkaichi (JP); and Sumitomo Wiring Systems, Ltd., Yokkaichi (JP)
Appl. No. 17/272,912
Filed by Sumitomo Electric Industries, Ltd., Osaka (JP); AutoNetworks Technologies, Ltd, Yokkaichi (JP); and Sumitomo Wiring Systems, Ltd., Yokkaichi (JP)
PCT Filed Jul. 24, 2019, PCT No. PCT/JP2019/029062
§ 371(c)(1), (2) Date Mar. 2, 2021,
PCT Pub. No. WO2020/049885, PCT Pub. Date Mar. 12, 2020.
Claims priority of application No. 2018-164851 (JP), filed on Sep. 3, 2018.
Prior Publication US 2021/0339339 A1, Nov. 4, 2021
Int. Cl. B23K 26/323 (2014.01); B23K 26/244 (2014.01); B23K 26/60 (2014.01); C22C 21/02 (2006.01); C22C 21/00 (2006.01); B23K 103/10 (2006.01); B23K 103/12 (2006.01)
CPC B23K 26/323 (2015.10) [B23K 26/244 (2015.10); B23K 26/60 (2015.10); C22C 21/00 (2013.01); C22C 21/02 (2013.01); B23K 2103/10 (2018.08); B23K 2103/12 (2018.08)] 11 Claims
OG exemplary drawing
 
1. A metal member-welded structure comprising:
a Cu member;
an Al member; and
a welded portion formed by melting and solidifying each of materials of the Cu member and the Al member, wherein
the Cu member includes a Cu-based material,
the Al member includes an Al-based material and a plating layer that covers a surface of the Al-based material, the surface being close to a surface of the Cu member,
the welded portion includes a sea-island structure in a vicinity of the surface of the Cu member,
the sea-island structure includes
a plurality of island portions containing pure Al, and
a sea portion interposed among the island portions, and
the sea portion has a eutectic structure having
a phase of an intermetallic compound of Cu and Al, and
a phase of pure Al.