Effect of pre-strain on oxidation behaviour of nickel-based superalloys in air at 700 degrees C

Authors
Lee, Cheol MinHan, Young-SooJeong, Jae SukJung, Woo SangSong, Seok HyunKim, Ju-Seong
Issue Date
2022-05
Publisher
Pergamon Press Ltd.
Citation
Corrosion Science, v.200
Abstract
The effect of pre-strain on oxidation behaviour of nickel-based superalloys was analysed using alloys 263 and 740H. Both alloys were subjected to tensile tests followed by oxidation tests at 700 degrees C in air. At higher pre-strain, both alloys exhibited higher oxidation rates and more oxide spallation. Microstructures were examined using various techniques (XRD, SEM, EBSD, and TEM). It was found that the pre-strain accelerated the formation of internal oxides. The defects that formed during the tensile tests apparently acted as oxygen diffusion channels from the oxide/metal interface to the inside of the metal substrate.
Keywords
HIGH-TEMPERATURE OXIDATION; COLD WORK; NI-ALLOYS; CORROSION; IRON; CO2; nickel; alloy; SEM; TEM; XRD; high temperature corrosion
ISSN
0010-938X
URI
https://pubs.kist.re.kr/handle/201004/115191
DOI
10.1016/j.corsci.2022.110229
Appears in Collections:
KIST Article > 2022
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