Study on abnormal hot corrosion behavior of nickel-based single-crystal superalloy at 900 °C after drilling

被引：10

作者：

Chen, Zehao ^{[1
]}

Wu, Mengmeng ^{[1
]}

Pei, Yanling ^{[1
]}

Li, Shusuo ^{[1
]}

Gong, Shengkai ^{[1
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Beijing, Peoples R China

来源：

NPJ MATERIALS DEGRADATION | 2021年 / 5卷 / 01期

基金：

中国国家自然科学基金;

关键词：

ELECTRICAL-DISCHARGE; CRACK-GROWTH; LASER; OXIDATION; OPTIMIZATION; FATIGUE; HOLES; PERFORMANCE; PARAMETERS; SPALLATION;

D O I：

10.1038/s41529-021-00167-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The hot corrosion behavior of nickel-based single-crystal superalloy after drilling is investigated at 900 degrees C. The characteristics of hot corrosion after drilling which are different from normal hot corrosion are reflected in the formation of a more stable oxide layer and less severe spallation. The change of microstructure around the hole is the main reason for the formation of a stable oxide layer during hot corrosion by changing the diffusion process of alloying elements. Subsequently, the formation of a stable oxide layer can reduce the effect of spalling by optimizing surface stress.

引用

页数：10

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