Quench and partition (QP) steel is a class of third-generation high-strength steels with effective ductility. The uniaxial tensile test was used to evaluate fundamental mechanical parameters. These parameters for QP980 are shown to be much higher than those for HSLA450 and DP590. Then the forming limit diagram of QP980 was constructed using bulging test results. The forming limit of QP980 was not seriously weakened with its ultrahigh strength. The QP980 formability was verified with FEM analysis combined with actual stamping. These data were compared with the results for other three high-strength steels (HSLA450, DP600, and TRIP600). QP980 is found to be a promising combination of high strength and good ductility, with its formability being close to DP600 of higher strength.

中文翻译：

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淬火和隔断钢板的力学性能和可成形性

淬火和分隔（QP）钢是一类具有有效延展性的第三代高强度钢。单轴拉伸试验用于评估基本机械参数。已显示QP980的这些参数远高于HSLA450和DP590的那些参数。然后使用膨胀测试结果绘制了QP980的成形极限图。QP980的成形极限并未因其超高强度而被严重削弱。QP980的可成型性已通过有限元分析和实际冲压技术进行了验证。将这些数据与其他三种高强度钢（HSLA450，DP600和TRIP600）的结果进行了比较。发现QP980是高强度和良好延展性的有前途的组合，其可成形性接近较高强度的DP600。