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本文报导用低频扭摆在四种高铬钢和八种高铬镍钢中在高温下观察到的几个内耗峯。 在铁素体型的三种高铬钢中(27Cr、25Cr和20Cr),从高温淬火后都在570℃附近观察到一个内耗峯,用27Cr和20Cr试样求出了这个内耗峯所包含的激活能,为87,000卡/克分子左右。 上述三种高铬钢从高温炉冷后,还可以在640℃附近出现一个内耗峯,另一种13Cr试样从高温炉冷后,可以在610℃附近出现一个内耗峯。 在奥氏体型的八种高铬镍钢中,都在730℃附近观察到一个内耗峯,用18Cr 18Ni试样求出了这个内耗峯所包含的激活能,为85,000卡/克分子左右。 根据初步实验结果,讨论了引起这几个内耗峯的可能原因。
This article reports several internal friction peaks observed at high temperatures in four high-chrome steels and eight high-chrome-nickel steels with low frequency torsion. In the ferritic three high-chromium steels (27Cr, 25Cr and 20Cr), quenched from a high temperature at 570 ℃ observed in the vicinity of an internal friction peak, with 27Cr and 20Cr sample obtained by the internal friction peaks contained in the activation Yes, about 87,000 calories per mole. The above three kinds of high-chromium steel from the high-temperature furnace cooling, but also in the vicinity of 640 ℃ there is a friction peak, another 13Cr sample from the high-temperature furnace after cooling, 610 ℃ in the vicinity of a friction peak. In the austenitic eight kinds of high-chromium nickel steel, an internal friction peak was observed at around 730 ° C. The activation energy contained in the internal friction peak was found to be 85,000 cal / mol using the 18Cr 18Ni sample. According to the preliminary experimental results, the possible causes of these internal friction peaks are discussed.