The symmetrical push-pull fatigue tests in load control were carried out for prestrainedpolycrystalline Cu.The change in mechanical behaviour during cycling was
Threshold of fatigue for short through cracks for Al-Li alloy 8090 was evaluated to be lowerthan that of long cracks,and to decrease with the shortening of the
The constitution of high-caustic ratio and highly concentrated sodium aluminate solutions hasbeen investigated by Raman spectra method.By comparison with the Ra