Evolution of microstructure and non-equilibrium phases in electron beam treated Zr55Cu30Al10Ni5 bulk amorphous alloy |
| |
| Authors: | N.H. Tariq M. Iqbal M.A. Shaikh J.I. Akhter M. Ahmad G. Ali Z.Q. Hu |
| |
| Affiliation: | aDCME, Pakistan Institute of Engineering and Applied Sciences, P.O. Nilore, Islamabad, Pakistan;bPhysics Division, Pakistan Institute of Nuclear Science & Technology, P.O. Nilore, Islamabad, Pakistan;cInstitute of Metal Research, Chinese Academy of Sciences, Wenhua Road, 110016 Shenyang, PR China |
| |
| Abstract: | Electron beam (EB) is becoming very popular for the modification of the surfaces as it involves localized melting and fast cooling which helps in achieving the non-equilibrium phases as well as fine microstructure. Surface modification of Zr-based amorphous alloy Zr55Cu30Al10Ni5 has been carried out by EB melting. Differential scanning calorimetry (DSC) was employed to determine the supercooled liquid region and activation energy of crystallization. The as-cast and modified surfaces of amorphous alloy at different beam conditions were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) techniques. Various phases like NiZr2, CuZr2 and Cu10Zr7 were identified which resulted in the enhancement of hardness of the modified alloy surface. |
| |
| Keywords: | Bulk metallic glasses Surface hardening Electron beam Glass-forming ability |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
