Described are metal products including metal alloy substrates joined by self-piercing rivets, and methods and apparatus for joining metal alloy substrates using self-piercing rivets. For high-strength metal alloy substrates, the disclosed joining techniques involve retrogressing portions of the metal alloy substrates, such as by heating using a laser heating source, a conductive heating source, or an inductive heating source, to produce crack-free joined metal products.
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Lin, Dechao; Zhu, Dewei; Malpica, Julio; Jurendic, Sebastijan; Liang, Zeqin; Wagstaff, Samuel Robert; Leyvraz, David; Richard, Julie; Piroteala, Tudor; Lester, Patrick; and Wu, Cedric, "Quality Improvement of Self-Piercing Riveting of High Strength Aluminum Alloys", Technical Disclosure Commons, (May 06, 2020)