Open AccessAnalysing mobility from austenite grain growth data
Author(s) -
W.G.T. Kranendonk
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1270/1/012014
Subject(s) - grain growth , solvent drag , grain size , grain boundary , materials science , annealing (glass) , grain boundary strengthening , drag , activation energy , austenite , thermodynamics , metallurgy , statistical physics , physics , chemistry , microstructure
To obtain information on mobility of grain boundaries in austenite grain growth data has been collected from the open literature, to fit a physics-based grain growth model, which relates the mean grain size to the annealing time. The suitability of this model for predicting the grain size as a function of time is discussed and some preliminary results on the reduced mobility are presented. For the compositions in the database it has been found that the activation energy ranges from 100 to 600 kJ/mol. Such high activation energies cannot be explained well with many solute drag models.