TY  - JOUR
AU  - He, Chunlei
AU  - Wang, Shuqi
AU  - Xia, Siyu
AU  - Ren, Chengzu
PY  - 2025
TI  - Theoretical and experimental study of amorphization and lattice transformation of pure magnesium by ultra-precision cutting method
JO  - Journal of Magnesium and Alloys
SN  - 2213-9567
SP  - 5047
EP  - 5058
VL  - 13
IS  - 10
AB  - Pure magnesium is a very promising material in the fields of biomedical and engineering. Obtaining pure magnesium with superior mechanical properties has consistently been a significant challenge in the area of materials science. This study focuses on investigating the processing method and strengthening mechanism of pure magnesium by ultra-precision cutting. The research results show that the pure magnesium grains were significantly refined after ultra-precision cutting. The average grain size reduced from ~24 µm to nanometers, and the average nano-hardness increased from 1.02 GPa to 2.82 GPa. Amorphous pure magnesium structure and body-centered cubic (BCC) lattice pure magnesium were reported. Molecular dynamics (MD) simulation confirmed that the high shear strain and hydrostatic pressure during ultra-precision cutting was the origin of amorphization and lattice transformation. The amorphous phase and a significant number of long-period stacking-ordered (LPSO) phases inside the pure magnesium were responsible for the high hardness after ultra-precision cutting.
UR  - https://doi.org/10.1016/j.jma.2025.03.023
DO  - 10.1016/j.jma.2025.03.023