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Effect of Ferrite Lattice Vacancies on Creep Rate of the Steel X20CrMoV121 in the Range 763–913 K
Author(s) -
Vodopivec Franc,
Kafexhiu Fevzi,
Žužek Borut
Publication year - 2017
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201600315
Subject(s) - creep , materials science , ferrite (magnet) , lattice (music) , lattice diffusion coefficient , lattice constant , atmospheric temperature range , condensed matter physics , thermodynamics , composite material , metallurgy , effective diffusion coefficient , physics , optics , diffraction , medicine , acoustics , magnetic resonance imaging , radiology
The difference of the experimental and the calculated creep rates of the steel grade X20CrMoV121 with M 23 C 6 particles in temperature range 763–913 K 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.