Annealing Behavior in a High-Pressure Torsion-Processed Fe—9Cr Steel
A Fe-9Cr steel containing second-phase particles was processed by ten rotations of high-pressure torsion (HPT) to produce a microstructure consisting of pancake-shaped nanoscaled grains with dominantly high-angle boundaries. Annealing was carried out on the HPT-processed Fe-9Cr steel from 500 to 700 °C up to 48 h. During the annealing, grains grew in a continuous manner. During high-temperature annealing (above 600 °C), a higher fraction of low-angle boundaries was observed when texture J became the dominant texture component. The annealing behavior of the HPT-processed Fe-9Cr steel was compared to that of the equal-channel angular pressing (ECAP)-processed Fe—9Cr steel. It was found ECAP Fe—9Cr showed a different grain growth mode, i.e., discontinuous growth, and a higher degree of thermal stability. Our studies provide insights into how the annealing behavior is affected by the microstructure and texture evolution.
J. Duan et al., "Annealing Behavior in a High-Pressure Torsion-Processed Fe—9Cr Steel," Journal of Materials Science, vol. 55, no. 18, pp. 7958-7968, Springer, Jun 2020.
The definitive version is available at https://doi.org/10.1007/s10853-020-04560-3
Materials Science and Engineering
Keywords and Phrases
Annealing; Grain Growth; Pressing (Forming); Textures; Torsional Stress, Annealing Behavior; High Angle Boundaries; High Pressure Torsions; High-Temperature Annealing; Low Angle Boundaries; Second Phase Particles; Texture Components; Texture Evolutions, Equal Channel Angular Pressing
International Standard Serial Number (ISSN)
Article - Journal
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01 Jun 2020