On the damage and fracture of commercially pure magnesium using x-ray microtomography

The nucleation, growth and linkage of microvoids are examined in commercially pure magnesium using x-ray computed microtomography (XCT). Tensile testing was performed inside the chamber of an XCT system with each test stopped at various levels of deformation to acquire scans. The nucleation of flat penny-shaped voids is observed relatively early during plastic deformation due to failure at twin and grain boundaries. Once nucleated the voids …