The main causes which lead to tensile abnormal fracture of SWRH82B steel rods are the network cementite sod the big brittle inclusion.

• 摘要通过对SWRH82B盘条的拉伸断口进行分析，认为网状渗碳体和大颗粒脆性夹杂物等缺陷是引起断口异常的主要原因。