研究了厚壁热轧H型钢翼缘宽度方向低温冲击功及显微组织的变化规律.结果表明:从翼缘端部到翼缘根部,铁素体晶粒尺寸逐渐增大,尺寸均匀性变差,低温冲击功大幅下降.%The transformation on low-temperature impact energy and microstructure along the flange of hot-rolled H-beam with thick flange has been studied in this artical.The result indicates that low-temperature impact energy has fallen dramatically when sampling from the edge of flange to the root.Ferrite grain size increase and homogeneity of grain size becaom worse follow the same law.
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