Type: Article

Study on nanocrystallization and amorphization in Fe-Cr-Mo-B-P-Si-C system during mechanical alloying

Journal: Materials Science and Engineering: B (09215107)Year: 2010/08/15Volume: 172Issue: 1Pages: 50 - 54

Movahedi B.^a Enayati M.H.Wong C.C.

a :University of Isfahan - IRAN(IR) - Isfahan

DOI:10.1016/j.mseb.2010.04.016Language: English

Abstract

A new composition of Fe-Cr-Mo-B-P-Si-C amorphous powder was produced by mechanical alloying (MA) of elemental powder mixtures. The structure of powder particles was studied by X-ray diffractometry (XRD), scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM). Continued milling of Fe-Cr-Mo-B-P-Si-C powder mixture first led to the formation of a Fe-base solution which transformed to the amorphous structure on further milling. It was found that the amorphization starts at the edge of particles and progresses into the internal regions as MA proceeds. Increasing milling time to 80 h yielded a fully amorphous structure. Thermal stability and crystallization characteristics of amorphous alloy were determined by means of differential scanning calorimetry (DSC), XRD and HRTEM and discussed next. © 2010 Elsevier B.V. All rights reserved.

Author Keywords

Amorphous materialsCrystallizationMechanical alloyingNanostructureAmorphizationAmorphous alloysAmorphous siliconCrystallizationDifferential scanning calorimetryMechanical alloyingMilling (machining)MixturesScanning electron microscopySilicon alloysX ray diffraction analysis

Other Keywords

AmorphizationAmorphous alloysAmorphous siliconCrystallizationDifferential scanning calorimetryMechanical alloyingMilling (machining)MixturesScanning electron microscopySilicon alloysX ray diffraction analysisAmorphizationsAmorphous powdersAmorphous structuresBase solutionC-systemsElemental powder mixtureHigh-resolution transmission electron microscopyNanocrystallisationPowder mixturesPowder particlesHigh resolution transmission electron microscopy