首页|Influence of rare earth oxides on microstructure and mechanical properties of nickel-based superalloys fabricated by high energy beam processing:A review

Influence of rare earth oxides on microstructure and mechanical properties of nickel-based superalloys fabricated by high energy beam processing:A review

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In this paper,the effects of rare earth oxides on the microstructure and mechanical properties of nickel-based superalloys prepared by high-energy beam processing technology were critically studied.The focus is on the optimal amount of rare earth oxides that can produce ideal results.Special attention was paid to their main strengthening mechanisms,including solid solution strengthening mainly in the form of solid solution dissolved in the nickel-based alloy and improving the microstructure of the alloy by grain refinement or fine grain strengthening produced by homogenizing the distribution phase.Y2O3,La2O3 and CeO2 rare earth oxides can also improve the fluidity of the alloy molten pool and reduce the segregation of alloying elements.These advantages can significantly improve the mechanical properties of the alloy.Thereafter,this paper outlines the future research directions of rare earth oxides,aiming to expand their application potential.

Rare earthsHigh energy beamNickel-based superalloysMicrostructureMechanical properties

Lianjie Bi、Hua Yan、Peilei Zhang、Haichuan Shi、Zhiyuan Li、Ruidi Li

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School of Materials Science and Engineering,Shanghai University of Engineering Science,Shanghai,201620,China

College of Agricultural Science and Engineering,Hohai University,Nanjing,211100,China

Department of Mechanics and Maritime Science,Chalmers University of Technology,Gothenbur,SE,41296,Sweden

State Key Laboratory of Powder Metallurgy,Central South University,Changsha,410083,China

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China Postdoctoral Science FoundationNatural Science Foundation of ShanghaiClass Ⅲ Peak Discipline of Shanghai—Materials Science and Engineering(High-Energy Beam Intelligent Processing and Green Manufact

2021M701038020ZR1422700

2024

10.1016/j.jre.2023.10.007

稀土学报(英文版)
中国稀土学会

稀土学报(英文版)

CSTPCDEI
影响因子：1.3
ISSN：1002-0721
年,卷(期)：2024.42(9)
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