Al对SWRH62A钢奥氏体晶粒长大的影响  

Effect of Al on austenite grain growth of SWRH62A steel

作　　者：王金涛 李战卫 于学森 张宇 Wang Jintao;Li Zhanwei;Yu Xuesen;Zhang Yu(Institute of Research of Iron&Steel,Sha-steel,Zhangjiagang Jiangsu 215625,China)

机构地区：[1]江苏省(沙钢)钢铁研究院,江苏张家港215625

出　　处：《金属热处理》2022年第12期158-162,共5页Heat Treatment of Metals

摘　　要：采用高温光学显微镜研究了Al对SWRH62A钢在加热过程中奥氏体晶粒长大的影响。结果表明,添加0.015%~0.045%的Al可将SWRH62A钢在低于1050℃保温时的晶界激活能由474.14 kJ/mol提高至1175.73 kJ/mol,奥氏体晶粒长大速度由0.18μm/℃降低至0.12μm/℃,具有显著细化晶粒的作用。Effect of Al content on the austenite grain growth of SWRH62A steel during heating was investigated by using high temperature optical microscopy.The results show that addition of 0.015%-0.045%Al increases the grain boundary activation energy of the SWRH62A steel from 474.14 kJ/mol to 1175.73 kJ/mol,and decreases the austenite grain growth rate from 0.18μm/℃to 0.12μm/℃with a soaking temperature below 1050℃,which can significantly refine grains.

关 键 词：SWRH62A钢 晶粒尺寸 高温金相 微合金 晶界激活能 

分 类 号：TG142.1[一般工业技术—材料科学与工程]