Mechanical milling of pure Ti and pure Zr

Abstract

Pure elemental Ti and Zr powders are respectively subjected to mechanical milling. It is discovered that after milling for 100 h, amorphization occurs in Zr while only nanocrystallization is achieved in Ti. Further thermal analysis and electron microscope observations verify amorphization in the 100 h-milled Zr sample. The crystallization peak temperature of the 100 h-milled Zr sample is determined to be 875 K by using a differential scanning calorimeter at a heating rate of 40 K/min. The above experimental results are discussed.