Microstructural Evolution of Oxidation Film on a Single Crystal Nickel-Based Superalloy at 980 A°C

被引：25

作者：

Hu, Yebing ^{[1
]}

Cheng, Congqian ^{[1
]}

Zhang, Li ^{[2
]}

Cao, Tieshan ^{[1
]}

Guo, Guangping ^{[2
]}

Meng, Xianming ^{[3
]}

Zhao, Jie ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Mat Sci & Engn, 2 Linggong Rd, Dalian 116024, Peoples R China

[2] Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China

[3] China Automot Technol Res Ctr, Tianjin 300300, Peoples R China

来源：

OXIDATION OF METALS | 2018年 / 89卷 / 3-4期

关键词：

Nickel-based; Superalloy; Oxidation; Alumina; Film; HIGH-TEMPERATURE OXIDATION; NI-BASED SUPERALLOY; FATIGUE BEHAVIOR; WATER-VAPOR; MECHANISM; AIR; DD6; 1000-DEGREES-C; KINETICS;

D O I：

10.1007/s11085-017-9787-4

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The isothermal oxidation behavior of a single crystal nickel-based superalloy was investigated at 980 A degrees C through XRD, SEM/EDX and EPMA. The mass gain process exhibited two periods: an initial stage followed by a steady-state stage. Based on the experimental results, the rapid formation of alumina and NiO was responsible for the initial stage of mass gain, and the formation of complex spinels phases may dramatically effect on the steady stage. The microstructure of oxidation film, from the top surface down to the base material, was clarified as Ni-rich oxides, Ni-Cr oxides, Cr-Ta-Co oxides, Ni-Al oxides and finally a continuous Al2O3. In addition, AlN formed in the gamma'-free zone. The effect of oxidation film evolution on the oxidation kinetics and mechanism were discussed.

引用

页码：303 / 317

页数：15

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