Premium
Insight into selective oxidation of dual‐phase steel after annealing in pure H 2 atmosphere at different heating rates and temperatures
Author(s) -
Wu Guangxin,
Zhang Jieyu
Publication year - 2020
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.201911223
Subject(s) - annealing (glass) , oxide , materials science , atmosphere (unit) , dual phase steel , metallurgy , mass transfer , kinetics , hydrogen , chemical engineering , thermodynamics , chemistry , microstructure , martensite , physics , organic chemistry , quantum mechanics , engineering
Abstract In this paper, the oxidation behaviors of DP980 advanced high strength steel (AHSS) are studied during annealing in a hydrogen atmosphere with different temperatures and heating rates. It is revealed that with the increase in holding time, the different heating rates affecting the surface oxide precipitation on the strip surface will be weakened. Mass transfer of Mn in heating, soaking, and cooling stages has been considered to illustrate the effect of heating rate on the oxide morphology of steel. And then, the Wagner model and aluminothermic reaction kinetics were performed to discuss the transition from external to internal and maximum reduction diameter of MnO oxidation.