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Effect of Al Content on the Evolution of Non‐Metallic Inclusions in Si–Mn Deoxidized Steel
Author(s) -
Cai Xiaofeng,
Bao Yanping,
Lin Lu,
Gu Chao
Publication year - 2016
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.201500305
Subject(s) - non metallic inclusions , materials science , scanning electron microscope , metallurgy , aluminium , metal , sulfide , inclusion (mineral) , analytical chemistry (journal) , mineralogy , composite material , chemistry , chromatography
Industrial trials and thermodynamic calculations are performed to investigate the effect of Al content on the evolution of non‐metallic inclusions in Si–Mn deoxidized spring steel by using scanning electron microscope (SEM) equipped with energy dispersive spectrometer (EDS) and FactSage thermodynamic software. Sulfide type inclusions and CaO–Al 2 O 3 –SiO 2 –MgO type complex inclusions are two major non‐metallic inclusions. The effect of Al content on the evolution of CaO–Al 2 O 3 –SiO 2 –MgO system inclusions is discussed. The stability diagram of Fe–Mn–Si–Al–Mg–O system inclusions is calculated in liquid steel at 1873 K. In practice, to achieve the liquid inclusions in molten steel, both the amount of magnesium and aluminum should be considered simultaneously.