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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 3    No. 3    September 1993

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INFLUENCE OF DISPERSIVE Y2O3 PARTICLES ALLOYING BY LASER IRRADIATION ON OXIDATION BEHAVIOUR OF AN SUPERALLOY
Xu  Wanren; Meng  Qinglin ; Zou  Yuchao

Northeastern University; Shenyang 110006; China

Abstract:The homogeneous dispersive Y2O3 particles were melt-doped on the surface of a superalloy by laser alloying and the effect of Y2O3 on the oxidation resistance of the alloy were investigated. The results showed that compact α-Al2O3 oxide scales formed continuously on the alloy surface and the internal oxidation was eliminated and oxidation rate decreased. Therefore, the oxidation resistanee of the alloy was improved.

 

Key words: superalloy Y2O3 particle laser surface alloying oxidation resistance

ISSN 1672-7029
CN 43-1423/U

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