针对热模拟压缩试验的试样小,且无法直接对其进行拉伸试验的问题,利用自制研发的小试样夹具进行小试样拉伸试验。通过对8种不同强度级别的试样分别进行小试样拉伸试验及硬度测试,分析二者的相关性;对比了小试样和标准拉伸试样的分析结果。结果表明:小试样和标准拉伸试样的拉伸试验结果基本一致,抗拉强度标准偏差均小于3.00,用小试样可较准确地测定出材料的抗拉强度。

Aiming at the problem that the sample of thermal simulation compression test was small and the tensile test could not be carried out directly, the tensile test of small sample was carried out by using the self-made small sample fixture. Through small sample tensile test and hardness test on 8 kinds of samples with different strength levels, the correlation between them was analyzed. The analysis results of small specimens and standard tensile specimens were compared. The results show that the tensile test results of small specimens and standard tensile specimens were basically the same, and the standard deviation of tensile strength was less than 3. 00. The tensile strength of materials could be accurately determined by small specimens.