The Dynamic Mechanical Properties Of Tungsten And Molybdenum Alloy

The dynamic compression and torsional experiments are done for Tungsten-molybdenum alloys through split Hopkinson pressure bar and torsion Hopkinson bar in this paper. Strain-rate of the compression experiment data are 300s-1-4500s-1; the repetition of the torsional experiment data are well. The effect of the strain-rate to the Tungsten-molybdenum alloys' flow stress and intensify module are investigated. The microscopic mechanism for the feature sintering materials is refered. Finally, dynamic compression constitutive relation is simulated using Johnson-Cook model. The constitution for Tungsten-molybdenum alloys can be applied to the foundation for the further studies as well as to the engineering practice.The constant strain-rate experimentation is probed as a new experimental technique in the course of dynamic experiment. This technique got application in the experiment of WMo compression experiments and obtained the preferable raw data and experiment results. The important meaning of controlling incident wave form for the experiment is take into account, eigen-line method was used to calculate the transmit of the stress wave among the variable cross-section bar. Using the elastic wave inversion deductive method the mathematical model was founded, which can be used to calculate the shape of the dam from the incident wave form. The calculated results are confirmed by experiments. Either the constant strain-rate experiment or the application the elastic wave inversion method can be comprehensively applied to the dynamic experimental investigation.