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The analysis of cyclic properties of Ti-6Al-4V titanium alloy at room and liquid nitrogen temperature

机译：Ti-6Al-4V钛合金室温和液氮温度下的循环性能分析。

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This paper presents the analysis of Ti-6Al-4V titanium alloy test results. Fatigue tests were carried out at room temperature and at the temperature of liquid nitrogen using single sample method. The values of plastic strain, cyclic modulus, cyclic yield stress and fatigue fracture surface were analyzed. The results of the tests were compared to the results from the monotonic tensile test. The presented analysis allowed to determine the value of the total strain at which there is a significant change in the material properties of the tested alloy. Two intervals are distinguished on the basis of this value, which are characterized by the range of low strain and the range of high strain. Different material properties were used in these intervals for analytical description of the cyclic material properties. The analytical description was based on the modification of the Ramberg-Osgood model.
机译：本文介绍了分析Ti-6Al-4V钛合金的测试结果。使用单一样品方法在室温和液氮温度下进行疲劳测试。分析了塑性应变，循环模量，循环屈服应力和疲劳断裂面的值。将测试结果与单调拉伸测试的结果进行比较。提出的分析允许确定总应变的值，在该应变下，被测合金的材料性能发生显着变化。基于该值区分两个区间，其特征在于低应变的范围和高应变的范围。在这些间隔中使用了不同的材料特性来分析描述循环材料的特性。分析描述基于Ramberg-Osgood模型的修改。

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