Negative mixing enthalpy and mixing enthalpy alloying leads to interface and size effects towards superb creep resistance of nickel-based single crystalline superalloys.

ABSTRACT: Nickel (Ni)-based single crystalline superalloys are the most important high-temperature service metallic materials for aircraft engine blades. These alloys' microstructures and mechanical properties must remain stable under high temperature and stress conditions for long periods of time. Rhenium (Re) has been the most effective alloying element, which serves as a guide to distinguish the third-generation Ni-based single crystalline superalloys. However, the Re-alloying effect seems to have been exhausted in terms of further improving superalloy creep lives, although the continuous demand for longer creep lives at high temperatures persists. This study uses the mixing enthalpy alloying route by combining negative enthalpy (N-enthalpy) alloying and positive enthalpy (P-enthalpy) alloying st

SUBMITTER: Zhao J 

PROVIDER: S-EPMC12236342 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature