论文部分内容阅读
我们曾在钼单晶工作报告中,报导了临界切应力在所测温度范围内,近似指数规律的实验结果。在那篇报导中,还利用杂质原子和位错中心原子成键的概念,使用Morse势推得体心立方金属临界切应力的温度依赖关系,表现为Morse势特点的复杂函数关系;在合适的温度范围内,则近似为指数规律。这个结论也很好地符合铁单晶的实验数据。单晶体的这种规律性,是否在多晶体中也同样出现呢?本文报导我们在钼多晶方面的实验结果,并收集和分析了其他作者关于铁、铬、钼、钨、钒、铌、钽的实验数据。第一批样品是用直径0.85毫米的工业
We have reported in the molybdenum single crystal work report, experimental results of the approximate exponential law of the critical shear stress in the measured temperature range. In that paper, the concept of atomic bonding of impurity atoms and dislocation centers was also used. The Morse potential was used to deduce the temperature dependency of the critical shear stress of the body-centered cubic metal, which represented the complex function of the Morse potential. At the proper temperature Within the range, the approximate exponential law. This conclusion is also very good in line with the experimental data of iron single crystal. This regularity of single crystals also occurs in polycrystals. This paper reports our experimental results on molybdenum polycrystalline and collects and analyzes the results of other authors on iron, chromium, molybdenum, tungsten, vanadium, niobium, tantalum Experimental data. The first batch of samples was made with 0.85 mm diameter industry