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This article focuses on the physical metallurgy of nonferrous high-temperature materials that affects weldability on the precipitates used for age hardening (strain-age cracking). Those precipitates associated with solidification and solidification segregation, primarily Laves and carbides (heat-affected zone grain boundaries cracking), are also discussed. The article examines the parameters that affect heat-affected zone liquation cracking and presents a solution for each problem.

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