Microstructural Evolution and Nanocrystalline Formation Kinetics in FeCo Based Alloys During Mechanical Alloying
Mechanical alloying (MA) is a widely used processing technique to prepare metastable or nanophase materials in a cost effective fashion. In this study, mechanically alloying FeCo based nanomagnetic alloys was included. Scanning electron microscope (SEM), X-ray diffractometer (XRD), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) were used to characterize the as milled powders. The effect of additional elements P and B on the powder size, microstructures and magnetic properties is discussed. It showed that the addition of P and B could reduce the powder size more effectively. The addition of elements P and B during MA of FeCo magnetic alloy also led to the formation of spherical nanocrystallines instead of banded microstructures in MA FeCo without these additions.
M. Gupta and Christina Y.H. Lim
H.F. Li and R.V. Ramanujan, "Microstructural Evolution and Nanocrystalline Formation Kinetics in FeCo Based Alloys During Mechanical Alloying", Journal of Metastable and Nanocrystalline Materials, Vol. 23, pp. 187-190, 2005