METAL MEMBER WELDED STRUCTURE, AND METHOD FOR PRODUCING METAL MEMBER WELDED STRUCTURE

• Main Authors: SUGIMURA KOKI, HIRAI HIROKI, NAKAYAMA OSAMU, HAMADA KAZUAKI, TANAKA TETSUJI, ONO JUNICHI, KUWABARA TETSUYA, WASHIO KAZUHIRO, OTSUKA TAKUJI, MIYAMOTO KENJI, GOTO KAZUHIRO
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2021
• Subjects: ALLOYS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; DIFFUSION TREATMENT OF METALLIC MATERIAL; FERROUS OR NON-FERROUS ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WELDING; WORKING BY LASER BEAM

A metal member welded structure is provided with a Cu member, an Al member, and a welded part in which a constituent material of the Cu member and a constituent material of the Al member are melted and solidified, wherein the Cu member has a Cu base material containing Cu as the main component, the Al member has an Al base material containing Al as the main component and a plating layer which covers the Cu member-facing surface side of the Al base material, the welded part is provided with an islands-in-sea structure in the vicinity of the surface of the Cu member, the islands-in-sea structure has multiple island parts each containing pure Al and a sea part located between the island parts, and the sea part has a eutectic structure of a phase made from a Cu-Al intermetallic compound and a phase made from pure Al. 一种金属部件的焊接结构，具有Cu部件、Al部件以及焊接部，在焊接部中，Cu部件的构成材料和Al部件的构成材料熔融并固化，其中Cu部件具有包含Cu作为主要成分的Cu基材，Al部件具有包含Al作为主要成分的Al基材以及覆盖Al基材的与Cu部件相对的表面侧的镀层，焊接部具有位于Cu部件的表面附近的海-岛结构，海-岛结构具有多个各自包含纯Al的岛部，以及位于岛部之间的海部，并且海部具有由Cu-Al金属间