A new nickel based high-temperature alloy with comprehensive optimization design that combines formability and mechanical properties for additive properties
In order to achieve effective design of additive manufacturing nickel-base high-temperature alloys with good usability, a new type of nickel-base high-temperature alloy was developed by combining effective component screening and local element segregation, which has excellent formability, wide process applicability, and low defect density. Through first principles calculations and experimental characterization, it has been confirmed that controlling the distribution of Boron (B) at the interface of MC carbides and γ phase matrix can effectively suppressing the formation of cracks induced by Boron (B) segregation. Meanwhile, the mechanical properties of this alloy are comparable or even superior to existing traditional high-temperature alloys. This method solves the problem of element segregation in additive manufacturing process and can be extended to control the distribution of other key elements, providing a new approach for designing new Ni high-temperature alloys with printability and balanced mechanical properties. Edited from “Robust additive manufacturable Ni superalloys designed by the integrated optimization of local elemental segregation and cracking susceptibility criteria”on 《Acta Materialia》 Ni-base high-temperature alloys, which can be used in aviation and aerospace applications, have become potential materials for additive manufacturing (AM), and the components produced have complex geometric shapes and sizes. However, high cooling rates and spatially variable temperature