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用扭摆作内耗测量,发现八种高铬镍合金钢中含氢可以引起内耗峰。当振动频率约为每秒1.5周时,内耗峰的巅值温度在610—640℃附近。用其中一种高铬镍合金钢试样(18Cr 12Ni)进行了系统的实验,指出这个内耗峰的基元过程是一种弛豫过程,所包含的激活能约为46,000—50,000卡/克分子。根据激活能的数值以及内耗峰在升温、降温和保温时的变化情况,可以认为这个新内耗峰是由於氢分子在钢中微扩散所引起来的。 内耗测量的结果也指出了在18Cr 12Ni钢中在特定的升温、降温速度下氢分子舆氢原子的转变温度范围,所得的结果舆资料上的相合。
Torsion as a measure of internal friction and found that eight kinds of high-chromium nickel alloy steel containing hydrogen can cause internal friction peak. When the vibration frequency is about 1.5 weeks per second, the peak temperature of the internal friction peak is around 610-640 ° C. A systematic experiment with one of the samples of high-chromium nickel-nickel alloy (18Cr 12Ni) indicates that the internal friction peak is a relaxation process and contains an activation energy of about 46,000-50,000 calories per mole. According to the values of the activation energy and the change of the internal friction peak during heating, cooling and holding, the new internal friction peak can be attributed to the slight diffusion of hydrogen molecules in the steel. The result of internal friction measurement also points out the transition temperature range of hydrogen atoms in 18Cr 12Ni steel at a specific temperature rising and cooling rate. The obtained results are in agreement with each other.