High-Temperature Oxidation Behavior and Kinetics of Forged 12Cr-MoVW Steel

The oxidation kinetics of forged 12Cr-MoVW steel was investigated in an air (N +O ) atmosphere at 873-1073 K (Δ50 K) using thermogravimetric analysis. The oxidized samples were characterized using X-ray diffraction, and the surface and cross-sectional morphologies were examined using scanning electr...

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Bibliographic Details
Published in:Archives of metallurgy and materials 2017-06, Vol.62 (2), p.1099-1104
Main Authors: Kim, Yong Hwan, Oak, Jeong-Jung, Bae, Ki-Chang, Lee, Wook Jin, Park, Yong Ho
Format: Article
Language:English
Subjects:
12Cr-MoVW steel
Alloys
Cross-sections
Energy consumption
ferritic/martensitic stainless steels
Forges
forging
Oxidation
oxidation kinetics
Oxidation rate
Oxidation resistance
oxide layer
Oxides
Reaction kinetics
Scanning electron microscopy
Steels
Thermogravimetric analysis
X-ray diffraction
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Summary:The oxidation kinetics of forged 12Cr-MoVW steel was investigated in an air (N +O ) atmosphere at 873-1073 K (Δ50 K) using thermogravimetric analysis. The oxidized samples were characterized using X-ray diffraction, and the surface and cross-sectional morphologies were examined using scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy. The forged 12Cr-MoVW steel samples exhibited parabolic behavior and a low oxidation rate compared with their as-cast counterparts. A protective oxide layer was uniformly formed at relatively low temperature (≤973 K) for the forged samples, which thus exhibited better oxidation resistance than the as-cast ones. These oxides are considered solid-solution compounds such as (Fe, Cr)
ISSN:2300-1909
1733-3490
2300-1909
DOI:10.1515/amm-2017-0159