热轧带肋钢筋屈服强度的计算修正

Correction of yield strength calculation of hot rolled ribbed bar

运用数理统计及数学回归法对热轧Ⅱ级带肋钢筋的Hall Petch公式进行了修正 ,并指出炼钢和轧钢工艺状态的不稳定及轧后回火温度的不同 ,对钢材屈服强度的影响。

The Hall-Petch formula was corrected by statistics and regression method.The paper pointed out that the unstable processing of steel making,steel rolling and tempering temperature difference can effect on the yield strength of steel products.