METAL DEPOSITION METHOD, AND LASER METAL DEPOSITION APPARATUS

摘要

PROBLEM TO BE SOLVED: To perform the metal deposition so that the crystal orientation of a deposition portion is in the same direction as a parent material, in a deposition method in which a buildup is formed on a single crystal or directionally solidified crystal parent material.SOLUTION: In the deposition method of forming a buildup on a single crystal or directionally solidified crystal parent material, metal deposition is performed from an extension in a preferential growth orientation of parent material crystals while forcibly cooling a portion of the parent material somewhat below a processed surface and beforehand imparting a temperature gradient to the parent material so that a maximum temperature gradient is oriented along the preferential growth orientation of the parent material crystals.