There are four types of Mg–Al–Si–O inclusions observed in the Mg-treated Al-deoxidized ultra-low-carbon steel containing trace Si, including SiO₂, 2MgO·SiO₂, 3Al₂O₃·2SiO₂, and 2MgO·2Al₂O₃·5SiO₂ and their composite inclusions. Using FactSage, the phase relationship of Mg–Al–Si–O system at 1473–2073 K was calculated using FactSage software, and the change in Si content can change the stable region range of different Mg–Al–Si–O-based inclusions. Based on the types of inclusions observed experimentally, the formation pathways of inclusions were predicted and a kinetic model was established to describe the formation process of the xMgO·yAl₂O₃–Mg–Al–Si–O and xAl₂O₃·ySiO₂–Mg–Al–Si–O inclusions.

有在所述Mg处理的Al脱氧的超低碳钢观察到四种类型的Mg-Al-的SiO夹杂物含有微量的Si，包括的SiO ₂，2MgO·的SiO ₂，3AL ₂ ö ₃ ·2SiO ₂，和2MgO·2Al ₂ O ₃ ·5SiO ₂及其复合夹杂物。使用FactSage，使用FactSage软件计算Mg–Al–Si–O系统在1473–2073 K时的相位关系，并且Si含量的变化可以改变不同Mg–Al–Si–O夹杂物的稳定区域范围。根据实验观察到的夹杂物类型，预测了夹杂物的形成途径，建立了描述夹杂物形成过程的动力学模型。x MgO· y Al ₂ O ₃ –Mg–Al–Si–O和x Al ₂ O ₃ · y SiO ₂ –Mg–Al–Si–O夹杂物。