The high tensile ductility of Mg-Gd-Y alloy at temperatures above 623 K and average engineering strain rate of 4.6× 10-4 s-1 was investigated. The results
<正>A continuous wave carbon dioxide (CO2) laser (λ=10.6μm) was employed to treat the surface of Si3N4 MOR (modulus of rupture) bars. The effects of the CO2 l