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Computer simulation of oxide scale cracking/healing processes under substrate creep at high temperatures and comparison of the results to experimental data
Author(s) -
Schütze M.
Publication year - 1987
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.19870381008
Subject(s) - cracking , creep , oxide , materials science , ultimate tensile strength , scale (ratio) , substrate (aquarium) , tensile strain , strain rate , composite material , metallurgy , physics , geology , oceanography , quantum mechanics
A computer programme is described which simulates the cracking and healing processes in protective oxide scales on heat‐resistant alloys under tensile straining at high temperatures. The main aim of the programme has been to calculate the critical strain rates for the maintenance of the protective effect of oxide scales after cracking by healing. The results from simulation calculations using input data for 3 heat‐resistant steels investigated earlier are compared to experimental results for these materials. The comparison reveals good agreement between calculated and experimental data concerning the critical strain rates for the maintenance of the protective effect by crack healing. The programme, thus, offers a tool for the theoretical estimation of critical strain rates when knowing some necessary mechanical data of the scale and the oxidation rate constant.