Plastic Deformation Behavior and Fracture Characteristic of Mg-RE-Zr Alloy
The plastic deformation behavior and fracture characteristic of Mg-RE-Zr alloy at different temperatures were studied by compression test. The results show that Mg-RE-Zr alloy has a large uniform plastic deformation and a significant deformation strengthening effect at 400 ℃. The room temperature fracture is mainly shear fracture,which is relative flat and has some visible quadratic cracks. At compression deformation,the fracture is the mixture of cleavage fracture and quasi-cleavage crack,while the tensile fracture mode is quasi-cleavage crack. Subsequently,the Mg-RE-Zr alloy can meet the requirements of plastic deformation as biomaterials.