ni base superalloys containing relatively large amounts of al and / or ti are known to be difficult to weld satisfactorily . as the al and ti content of the superalloy is increased to improve the strength , the weldability of the component is drastically reduced . it is concluded herein that reducing the γ ′ phase improves weldability . a stepwise , controlled heating and cooling process is described to be used in cooperation with a welding process to reduce the γ ′ present and thereby improve weldability .