Effects of Yttrium on Oxidation Behavior of Nickel-based Single Crystal Superalloy Containing Re

Wang Shusen; Meng Jie; Wang Liang; Zou Mingke; Zhang Chaowei; Wang Meng; Xu Futao; Yang Yanhong; Wang Xinguang

doi:10.15980/j.tzzz.2022.05.014

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Effects of Yttrium on Oxidation Behavior of Nickel-based Single Crystal Superalloy Containing Re
Vol. 42, Issue 5, Pages: 594-597(2022)
Published： 2022 ，
DOI： 10.15980/j.tzzz.2022.05.014

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Wang Shusen, Meng Jie, Wang Liang, et al. Effects of Yttrium on Oxidation Behavior of Nickel-based Single Crystal Superalloy Containing Re. [J]. Special Casting & Nonferrous Alloys 42(5):594-597(2022)
DOI：

Wang Shusen, Meng Jie, Wang Liang, et al. Effects of Yttrium on Oxidation Behavior of Nickel-based Single Crystal Superalloy Containing Re. [J]. Special Casting & Nonferrous Alloys 42(5):594-597(2022) DOI： 10.15980/j.tzzz.2022.05.014.

摘要

研究了Y元素对含铼镍基单晶高温合金高温恒温氧化行为的影响。采用静态增重法研究了Y对900、1 000和1 100℃下合金的氧化动力学的影响，并采用扫描电镜和X射线衍射等手段分析了氧化产物的结构和形貌。结果表明，含Y和不含Y合金在900、1 000和1 100℃下的氧化级别均为完全抗氧化级。Y含量的增加虽然对900℃和1 000℃的氧化增重影响很小，但明显降低了1 100℃的氧化增重，这是由于Y的添加增加了α-Al

的连续性，提高了氧化膜保护效果。

Abstract

The effects of Y on the isothermal oxidation behavior of a nickel-based single crystal superalloy containing Re at 900 ℃

1 000 ℃ and 1 100 ℃ were investigated by static weight gain method. The microstructure and morphology of oxidation were analyzed by X-ray diffraction（XRD） and scanning electron microscope（SEM）. The results indicate that oxidation grade of the alloy with yttrium and without yttrium are all complete oxidation resistance grade at 900 ℃

1 000 ℃ and 1 100 ℃. The oxidation weight gain at 900 ℃ and 1 000 ℃ are hardly affected

while that at 1 100 ℃ is significantly reduced by the increase of Y content

which is attributed to the continuity increase of α-Al

caused by Y addition

enhancing the protective effect of oxide film.