【摘要】 用扫描电镜观察了含锡易切削钢的夹杂物和断口的形貌,并按能谱分析了夹杂物的化学成分。检测结果表明,该钢中夹杂物主要是氧化物和MnS ,多呈球状或纺锤形,锡元素在断口和夹杂物表面上存在明显的偏析。更多还原

【Abstract】 The morphology of inclusions and fracture of a tin-bearing free cutting steel were observed by means of SEM and the chemical composition of inclusions determined using EDAX analysis. The results showed that the inclusions were mainly composed of oxides and MnS in the shape of sphere or spindle, and the distribution of tin in the fracture and inclusion surface had obvious segregation.更多还原