The result shows with increase of the boron content in Fe-B alloy,the size of the scanned tracks became larger and the tendency of spheroid decreases.The surface roughness of the samples became worse.

• 结果表明,随着硼含量的增加,试样组织的凝固颗粒尺寸增大而球化倾向降低,试样的表面粗糙度变差;