A critical review on oxidation behavior of Co-based superalloys  

作　　者：Chenghao PEI Qingshuang MA Qiuzhi GAO Yue YANG Yuhang DU Hailian ZHANG Huijun LI 

机构地区：[1]School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China [2]School of Resources and Materials,Northeastern University at Qinhuangdao,Qinhuangdao 066004,China [3]School of Materials Science and Engineering,Tianjin University,Tianjin 300354,China [4]School of Mechanical,Materials and Mechatronic Engineering,University of Wollongong,Wollongong,NSW 2522,Australia

出　　处：《Chinese Journal of Aeronautics》2025年第3期183-206,共24页中国航空学报(英文版)

基　　金：support from the National Natural Science Foundation of China(Nos.52171107,52201203);the Hebei Provincial Natural Science Foundation,China(No.E2021501026);the National Natural Science Foundation of China-Joint Fund of Iron and Steel Research(No.U1960204).

摘　　要：The novel Co-based superalloys are extensively used in gas-powered and jet engine turbines due to their excellent high-temperature performance, achieved by strengthening the L12-γ′ ordered phase. This review presents an overview of the research progress on oxidation behavior of Co-based superalloys, including oxidation kinetics, oxides morphology, the formation and spallation of oxide layers, and importantly, the synergistic effects of alloying elements on oxidation resistance—a critical area considering the complex interactions with multiple alloying elements. Additionally, this review compares the oxidation resistance of single crystal versus polycrystalline alloys. The effect of phase interface and dislocations on oxidation behavior is also discussed. While significant progress has been achieved, areas necessitating further investigation include optimizing alloy compositions for enhanced oxidation resistance and understanding the long-term stability of oxide layers. The future prospects for Co-based superalloys are promising as ongoing research aims to address the existing challenges and unlock new applications at even higher operating temperatures.

关 键 词：COBALT SUPERALLOYS OXIDATION Alloying elements MICROSTRUCTURE Temperature 

分 类 号：TG1[金属学及工艺—金属学]