Joined body of dissimilar metals and method for producing joined body of dissimilar metals
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United States of America Patent
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Sep 18, 2018
Grant Date -
Oct 13, 2016
app pub date -
Dec 26, 2014
filing date -
Jan 21, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A joined body of dissimilar metals, in which a flared joint is formed and which have a high joint strength, is provided. The joined body contains a first metal member having a curved surface portion, a second metal member having a higher melting point than the first metal member and joined to the first metal member to form the flared joint, and a joining metal portion formed by irradiating the first metal member and a filler material disposed between the first and second metal members with a laser. An intermetallic compound formed at the interface between the second metal member and the joining metal portion has a thickness of at most 3 μm. A melted portion and a non-melted portion are formed in the curved surface portion of the first metal member in which the flared joint is formed.
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