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Vodopivec, Franc; Kafexhiu, Fevzi; uzek, Borut
Steel research international, 06/2017, Letnik: 88, Številka: 6Journal Article
The difference of the experimental and the calculated creep rates of the steel grade X20CrMoV121 with M23C6 particles in temperature range 763-913K was examined in terms of temperature, iron self-diffusion rate, glide stress, and number of ferrite lattice vacancies. The Ashby-Hornbogen creep equation is modified by adding a parameter that represents the effect of number of lattice vacancies; consequently, the difference of the experimental and the calculated creep rates is diminish to the level of average particles size assessment accuracy.
