常化温度对2.3%Si无取向硅钢2.5 mm热轧板冲击韧性的影响  

Influence of Normalizing Temperature on Impact Toughness of 2. 3 % Si Non-Oriented Silicon Steel 2. 5 mm Hot-Rolled Sheet

作　　者：张淑娟 陆佳栋 岳重祥 李化龙 Zhang Shujuan;Lu Jiadong;Yue Chongxiang;Li Hualong(Institute of Research of Iron and Steel,Shasteel,Zhangjiagang 215625)

机构地区：[1]江苏省(沙钢)钢铁研究院

出　　处：《特殊钢》2019年第5期50-53,共4页Special Steel

摘　　要：对900-950℃常化处理后的2.3%Si无取向硅钢进行了室温至100℃的冲击试验,采用扫描电镜观察不同条件下的冲击断口形貌,分析了常化温度对2.3%Si无取向硅钢韧性的影响。结果表明,当冲击试验为室温时,随常化温度的升高,试验钢由韧性断裂逐渐转为脆性断裂,冲击功由21.4 J降至12.2 J;当冲击温度为100℃时,经900~950℃常化处理后的试验钢冲击功为28.4~33.2 J,为韧性断裂;经常化处理后的冲击断口区域夹杂物主要为AlN。The impact test of room temperature to 100℃of 2.3%Si non-oriented silicon steel normalized at 900~950℃were carried out,and the fracture morphologies were observed by Scanning Electron Microscopy(SEM).Effects of normalizing temperature on impact toughness of 2.3%Si non-oriented silicon steel are investigated.The results show that with increasing normalizing temperature,at room temperature the ductile fracture of test steel gradually changed into brittle fracture,the impact energy of steel decreases from 21.4 J to 12.2 J,at 100℃the impact energy of test steel normalized at900~950℃is 28.4~33.2 J with ductile fracture.The inclusions at impact fracture of normalized steel are main AIN.

关 键 词：无取向硅钢 常化 冲击韧性 韧窝 夹杂物 

分 类 号：TG142[一般工业技术—材料科学与工程] TG156[金属学及工艺—金属材料]