Cyclic oxidation behavior of Ni_(3)Al-based single crystal alloy IC21

作     者：Tian-Tian Yang Xin Zhou Shu-Suo Li Yan-Ling Pei Sheng-Kai Gong Tian-Tian Yang;Xin Zhou;Shu-Suo Li;Yan-Ling Pei;Sheng-Kai Gong

作者机构：School of Materials Science and EngineeringBeihang UniversityBeijing100191China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2023年第42卷第5期

页      面：1656-1662页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China(No.51371014) 

主　　题：Ni_(3)Al Thermal cycling Oxidation Microstructure 

摘      要：In this study,the cyclic oxidation tests of the Ni3Al-based single-crystal super alloy IC21 were carried out at 800,900,950,1000,1050 and 1100℃in *** present study shows that the complex oxide scale on the surface of the alloy is made up of an outer columnar NiO layer,an intermediate mixture of NiO and NiAl2O4layer with a small amount of Mo oxides and an inner continuous layer ofα-Al_(2)O_(3).The cyclic oxidation kinetics curves show that oxidation resistance at 800,900,950,1000 and1050℃seems to follow a similar law and is better than that at 1100℃.The overall weight changes at 1100℃follows a parabolic *** and severe rumpling of the oxide scale are observed on the surface of the alloy at1100℃,revealing the occurrence of disastrous oxidation.