The effect of Gd addition on the cyclic oxidation behavior and creep life of alumina-forming Ni-based superalloy

被引：16

作者：

Yun, Dae Won ^{[1
]}

Seo, Seong Moon ^{[1
]}

Jeong, Hi Won ^{[1
]}

Yoo, Young Soo ^{[1
]}

机构：

[1] Korea Inst Mat Sci, 797 Changwondaero, Chang Won 51580, Gyungnam, South Korea

来源：

CORROSION SCIENCE | 2020年 / 170卷

关键词：

Superalloys; Nickel; Thermal cycling; Weight loss; Oxidation; HIGH-TEMPERATURE OXIDATION; REACTIVE ELEMENTS; CHROMIUM-ALLOYS; AL; SEGREGATION; CR; RESISTANCE; ADHESION; DOPANTS; SCALES;

D O I：

10.1016/j.corsci.2020.108694

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The oxidation resistance and creep property of alumina-forming Ni-based superalloys with varying amounts of Gd are studied at 1100 degrees C in ambient air. Regardless of the Gd content, from the outermost surface inwards, a typical oxide scale consists primarily of NiO, spinel, spinel with oxide particles containing refractory elements, and Al2O3. However, spallation and abnormal growth of the scale are observed in alloys without Gd, and Gd addition significantly improves oxidation resistance. The creep rupture life is almost identical for the alloys with 0.04 wt.% Gd and those without Gd. The addition of Gd improves alloy oxidation resistance without compromising creep property.

引用

页数：9

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