New insights into oxidation and creep characteristics of T91 heat-resistant steel in martensitic and ferritic states
Source abstract
Abstract
This study systematically compared the oxidation and creep characteristics of T91 steel in both martensitic and ferritic states. Findings indicate the formation of mixed oxides, including Fe 3O 4, (Cr, Mn) 2O 3, and MnCr 2O 4, during the oxidation process. In the ferritic specimens, the oxygen diffusion channel is restricted due to the transition of M 23C 6 carbide. Moreover, the ferritic steel exhibits poor creep life, and a strong α fibre texture was observed. For T91 steel, appropriate thermomechanical treatment can lead to uniform distribution of M 23C 6 carbides within the matrix, achieving the optimal precipitation strengthening effect and resulting in improved high-temperature properties.
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Research context
OpenAlex topics: High Temperature Alloys and Creep · Fire effects on concrete materials · Microstructure and Mechanical Properties of Steels
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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