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Oxidation Behavior of GH3535 Superalloy at 700℃ and 900℃ |
Tao LIU1,2,Jiasheng DONG2,**( ),Hui LI2,Zhijun LI3,Xingtai ZHOU3,Langhong LOU2 |
1. Dalian University of Technology, Dalian 116024 2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 3. Shanghai Institute of Applied Physics, Chinese Academy of Sciences 201800 |
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Cite this article:
Tao LIU,Jiasheng DONG,Hui LI,Zhijun LI,Xingtai ZHOU,Langhong LOU. Oxidation Behavior of GH3535 Superalloy at 700℃ and 900℃. Chinese Journal of Materials Research, 2014, 28(12): 895-900.
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Abstract The isothermal and cyclic oxidation behavior of GH3535 superalloy in air at 700oC and 900oC were investigated by using TGA method. The results show that GH3535 alloy has a good oxidation resistance to isothermal oxidation at 700℃and 900℃. But the alloy shows a worse resistance to cyclic oxidization, especially when cyclic oxidation at 900 oC the alloy suffered from accelerated oxidation with rather severe spallation of oxide scales. The X-ray and EDS analysis show that the formed oxide scale consists mainly of Cr2O3, NiMn2O4 and FeCr2O4 during isothermal oxidation. However, oxide products such as MoO2, NiFe2O4, NiCr2O4, NiMn2O4, and NiMoO4 can be detected after cyclic oxidation. The oxidation resistance of the alloy decrease noticeably because of the cracking and spallation of the protective oxide scale as well as the continuous participant of Mo in the oxidation process.
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Received: 29 June 2014
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Fund: *Supported by the Strategic Priority Research Program of the Chinese Academy of Sciences No. XDA020404040. |
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