高强度钢板止裂性能与常规力学性能的相关性分析

Relationship Analysis of Crack Arrest Property and Conventional Mechanical Properties of High Strength Steel

    摘要
  • 摘要: 统计分析了15组高强度钢板止裂温度CAT与抗拉强度Rm、韧脆转变特征温度ETT50、无塑性转变温度NDT、碳当量Ceq、韧脆转变特性参量k和板厚t的相关性规律。在此基础上建立反映其内在联系的相关性方程:(1)CAT=2.88·NDT-0.002 4·Rm·NDT+0.138·kt2;(2)CAT=388.5·Ceq-0.21·Rm-0.006·lnkt2。

     

    Abstract: Fifteen troops of crack arrest temperature CAT and tensile strength Rm, nil-ductility transition temperature NDT, ductile-brittle transition temperature ETT50, ductile-brittle transition parameter k and thickness t of high strength plates were analyzed. The relationship formula of CAT and Rm, NDT, Ceq, k and lnkt2 was proposed based on the above results:(1) CAT=2.88·NDT-0.002 4·Rm·NDT + 0.138·kt2; (2) CAT=388.5·Ceq-0.21·Rm-0.006·lnkt2.

     

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