Effect of texture on the electromagnetic shielding property of magnesium alloy

Wrought magnesium alloys commonly exhibit strong texture, which significantly affects the properties of alloys. The effect of texture on the electromagnetic shielding property of these alloys as promising shielding materials is rarely reported. In the present study, the electromagnetic interference shielding effectiveness (SE) of AZ31 sheets with different texture intensities was investigated by coaxial cable method within the testing frequency range of 30-1500 MHz. Results indicated that the SE of the sheets gradually increased with the strengthening of the basal texture intensity. The SE increment was mainly attributed to the improvement in the reflection attenuation of the incident electromagnetic wave, which was induced by the expansion of the impedance mismatch between the air and sheet surface. Furthermore, the relationship among texture, conductivity, and impedance was also discussed.