B-14 レーザ肉盛溶接法によるニッケル基単結晶超合金の補修技術の開発(材料I,一般講演)

概要

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The repair technology of nickel base single crystal superalloy by YAG laser cladding was studied. Single crystal could be obtained at the low laser power energy input. The grain growth was influenced on the angle between growth direction and deposit direction. However the grain growth was not influenced on the angle between growth direction and welding direction. The stress relief (SR) heat treatment was effective to prevent the recrystallization for cladding of single crystal. Cuboidal γ' precipitates, which size is about 0.3〜0.7 μ m, could be obtained with partially solid solution with SR heat treatment and aging heat treatment.
公益社団法人日本ガスタービン学会の論文
2008-10-01