YG15硬质合金抗弯强度的数学解析

应用数学方法分析了YG15硬质合金抗弯强度的实验结果。叙述了用一组有限个试样的结果估计硬质合金总体强度分布的原理和方法,对得出的分布特征参数的物理意义作了探讨。发现置信边值强度既包含了实验结果的平均值又反映了分散程度,能更可靠地表征合金的强度水平,可作为材料强度性能的评价指标。并用该强度指标有效地体现了热等静压对硬质合金强度的作用。

MATHEMATICAL ANALYSIS ON TRANSVERSE RUPTURE STRENGTH OF YG15 HARDMETALS

This paper has analysed the experimental results of transverse rupture strength of YG 15 hardmetals by mathematical method. The principle and method for estimating general strength distribution by using the results obtained from a limited quantity of specimens were discribed and the physical significance on parameters of distribution characteristics was discussed. It has been found that the left value of strength confidence intervals both contains the average value of experimental results and refects deviation level which can illustrate the strength level of alloys reliablely and can be used as the data for evaluating the strength properties of materials. Meanwhile, the strength data can be used to effectively reveal the effects of HIP on the strength of hardmetals.