The molten GCr15 bearing steel was modified by three types of Al-Mg alloys. Firstly,the total oxygen content value was measured,then the inclusion size, shape and chemical composition were analyzed by optical(microscopy,) SEM and EDX.

• 分别采用3种不同镁含量的镁铝合金对GCr15轴承钢液进行了夹杂物变质处理,分析了实验过程中全氧值的变化,并利用光学显微镜、扫描电镜和能谱仪分析了试样中夹杂物的尺寸、形貌和化学成分。