Microstructure and properties evolution of Mg-2Y-0.6Nd-0.6Zr alloy rolled at room and liquid nitrogen temperature

The microstructure evolution, texture, mechanical behavior and twin deformation of the ECAPed Mg-2Y-0.6Nd-0.6Zr alloy at room and liquid nitrogen temperature were investigated by rolling samples. The ECAP processed material appeared the texture of 45 degrees to the extrusion direction and its yield strength reached 93.6 MPa. The results showed that cryorolling encourages twinning in Mg-2Y-0.6Nd-0.6Zr alloy, enhancing the tensile strength and texture. Activation of {10-12} twinning during rolling was found to be more pronounced in the cryorolled samples than in the cold rolled samples owing to a lower temperature. As a result, the cryorolled samples had more twins than and cold rolled ones, the proportion of twin areas of room temperature rolling and ultra-low temperature rolling were: 2.45% and 4.23%.

Automated summary

The study found that cryorolling promotes twinning in Mg-2Y-0.6Nd-0.6Zr alloy, enhancing tensile strength and texture compared to cold rolling. The cryorolled samples exhibited a higher proportion of twin areas than cold rolled samples, indicating a significant impact of cryorolling on the microstructure and properties of the alloy.