对 B16、Q345R、A106和2．25Cr1Mo 四种钢进行了连续球压痕试验，并按照所提出的方法对试验获得的载荷-位移曲线进行处理，通过引入损伤积累理论获得连续球压痕试验的压痕塑性表征参数；同时对四种钢进行了传统单轴拉伸试验以获得它们的断面收缩率，将连续球压痕试验得到的压痕塑性表征参数与断面收缩率进行比较.结果表明：对于断面收缩率大的钢，其压痕塑性表征参数也较大；在因试验条件限制而无法进行单轴拉伸试验时，压痕塑性表征参数可以作为材料塑性评定的补充参数.
Continuous ball indentation test was carried on B16,Q345R,A106 and 2.25Cr1Mo steels.The load-displacement curve obtained from test was processed with the method mentioned in this paper in order to get the indentation plastic characterization parameter by introducing damage accumulation theory.At the same time,the traditional uniaxial tensile tests were applied on the steels to get area reduction rate,and the comparison between the indentation plastic characterization parameter obtained from the continuous ball indentation test and the area reduction rate.The results show that the indentation plastic characterization parameter of the steels with better plasticity was higher.The plastic characterization parameter can be a supplement parameter when the uniaxial tensile test cannot be carried.
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