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在-100~200℃范围内不同应变速率(10-4,10-3和10-2s-1)下利用准静态拉伸和压缩实验研究了温度对Zr-45Ti-5Al-3V合金力学性能的影响.结果表明,在拉伸条件下,Zr-45Ti-5Al-3V合金具有较高的屈服强度和抗拉强度,室温时其屈服强度超过1355 MPa,但延伸率较小.随着温度的升高,合金的屈服强度和抗拉强度均下降,而塑性变形量则上升.在压缩条件下,温度对屈服强度的影响与拉伸时一致,而塑性变形量和断裂强度均在室温时最高,其他温度下变化规律与拉伸时一致.应变速率对合金的力学性能影响不大.
The effects of temperature on the mechanical properties of Zr-45Ti-5Al-3V alloy were studied by means of quasi-static tensile and compression tests at different strain rates (10-4, 10-3 and 10-2s-1) .The results show that Zr-45Ti-5Al-3V alloy has higher yield strength and tensile strength under tensile conditions and its yield strength is more than 1355 MPa at room temperature, but its elongation is small.With the increase of temperature High, the yield strength and tensile strength of the alloy decreased, while the amount of plastic deformation increased.Under the compression conditions, the temperature on yield strength consistent with the tensile, and plastic deformation and fracture strength are the highest at room temperature, Other temperature changes consistent with the tensile strain rate of mechanical properties of the alloy has little effect.