Effect of Strain Rate,Temperature and Multiaxial Stress on the Strength and Ductility of S-200E Beryllium and 6Al-4V Titanium.

摘要

The strength properties of S-200E beryllium and 6Al-4V titanium were determined under conditions of combined stress,elevated temperatures and high strain rates. Beryllium specimens were obtained from both extruded rod and hot-pressed block. The range of test conditions included strain rates from 0.001to 1000/sec,temperatures from 70to 1000F,and both uniaxial and biaxial states of stress. The biaxial stress states were obtained with thin-walled tubular specimens loaded with axial tension or compression,torsion,or internal pressure. (Author)