Orientation-dependent recrystallization in an oxide dispersion strengthened steel after dynamic plastic deformation

Zhenbo Zhang, N.R. Tao, Oleg V. Mishin, Wolfgang Pantleon

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The microstructure of the oxide dispersion strengthened ferritic steel PM2000 has been investigated after compression by dynamic plastic deformation to a strain of 2.1 and after subsequent annealing at 715 °C. Nanoscale lamellae, exhibiting a strong 〈100〉 + 〈111〉 duplex fibre texture, form during dynamic plastic deformation. Different boundary spacings and different stored energy densities for regions belonging to either of the two fibre texture components result in a quite heterogeneous deformation microstructure. Upon annealing, preferential recovery and preferential nucleation of recrystallization are found in the 〈111〉- oriented lamellae, which had a higher stored energy density in the as-deformed condition. In the course of recrystallization, the initial duplex fibre texture is replaced by a strong 〈111〉 fibre recrystallization texture.
Original languageEnglish
Article number012059
JournalI O P Conference Series: Materials Science and Engineering
Number of pages6
Publication statusPublished - 2015
Event36th Risø International Symposium on Materials Science - DTU Risø Campus, Roskilde, Denmark
Duration: 7 Sep 201511 Sep 2015
Conference number: 36


Conference36th Risø International Symposium on Materials Science
LocationDTU Risø Campus

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