Effect of Deformation on Physical Properties of W-Re Alloys
W-Re alloy has good room-temperature toughness and high-temperature resistance.It has a wide application prospect in vacuum electronic devices.W-Re alloy slabs with logarithmic strains of 0.75,1.10,1.47 and 2.36 are prepared by powder metallurgy and high temperature rolling,and the physical properties of them under differ-ent deformation are studied.The results show that the relative density and Vickers hardness of W-Re alloy increase rapidly at first and then become flat gradually with the increase of deformation.The thermal conductivity of W-Re al-loy increases with the increase of deformation.When the deformation is zero,the thermal conductivity of W-Re alloy at room-temperature is about 35W/(m·K);when the logarithmic strain is 2.36,it increases to 40 W/(m·K).The relationship between the thermal conductivity of W-Re alloy and temperature changes shows an opposite trend to that of pure tungsten,and the thermal conductivity of W-Re alloy increases with the increase of temperature.
万方数据
维普
