Laser additive manufactured high gamma '-phase nickel-based superalloys have a high cracking susceptibility due to the unique characteristics of superalloys, which can hinder their widespread application. This work overcomes the above challenges via a compositional optimization strategy, and a novel nickel-based superalloy with high gamma ' phase has been developed via laser directed energy deposition (LDED). The effects of the various Al + Ti (1:1) contents (6.4, 6.6 and 6.8 wt.%) on microstructure and mechanical properties (room temperature, 850 degrees C and 900 degrees C) of the as-deposit...
