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首页> 外文期刊>Journal of Materials Engineering and Performance >Fatigue Behavior of X40CrMoV 51 at High Temperatures
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Fatigue Behavior of X40CrMoV 51 at High Temperatures

机译：X40CrMoV 51的高温疲劳行为

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摘要

The fatigue characteristics of the hot work tool steel X40CrMoV 51 (UNS number T20811) at high temperatures is presented. The temperatures for the experiments were chosen between 50-600 deg C. The experiments used B-type cylindrical specimens machined from X40CrMoV in an R.R. Moore rotating bending type fatigue test machine obeying the high cycle principle. The temperature intervals for the experiments were chosen as 50, 100, 200, 300, 400, 500, and 600 deg C, for which the fatigue limit for each interval at 2 X 10~6 cycles was determined. The fatigue limit of the material at room temperature (RT) is observed as 432 MPa, whereas it drops to 383 MPa at 400 deg C. On the other hand, it stays almost constant between 400-600 deg C, indicating that the material includes the elements forming strong carbides such as V, Mo, and Cr, which prevent the decrease of the fatigue limit due to higher temperatures.
机译：给出了热作工具钢X40CrMoV 51（UNS编号T20811）在高温下的疲劳特性。实验的温度选择在50-600摄氏度之间。实验使用X40CrMoV在R.R. Moore旋转弯曲型疲劳试验机中遵循高循环原理加工的B型圆柱试样。实验的温度间隔选择为50、100、200、300、400、500和600摄氏度，为此确定2 X 10〜6个循环的每个间隔的疲劳极限。观察到材料在室温（RT）时的疲劳极限为432 MPa，而在400摄氏度时下降到383 MPa。另一方面，它在400-600摄氏度之间几乎保持恒定，这表明该材料包括形成强碳化物（如V，Mo和Cr）的元素，可防止由于高温而导致的疲劳极限降低。

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