Preprint Article Version 1 This version is not peer-reviewed

EBSD Microstructure Mapping of Zr47.5Cu45.5Al5Co2 Bulk Metallic Glass Matrix Composite to Ascertain the Effect of Inoculation in Promoting Crystallinity

Version 1 : Received: 12 December 2018 / Approved: 13 December 2018 / Online: 13 December 2018 (07:01:14 CET)

How to cite: Rafique, M.M.A.; Brandt, M.; Easton, M. EBSD Microstructure Mapping of Zr47.5Cu45.5Al5Co2 Bulk Metallic Glass Matrix Composite to Ascertain the Effect of Inoculation in Promoting Crystallinity. Preprints 2018, 2018120159 (doi: 10.20944/preprints201812.0159.v1). Rafique, M.M.A.; Brandt, M.; Easton, M. EBSD Microstructure Mapping of Zr47.5Cu45.5Al5Co2 Bulk Metallic Glass Matrix Composite to Ascertain the Effect of Inoculation in Promoting Crystallinity. Preprints 2018, 2018120159 (doi: 10.20944/preprints201812.0159.v1).

Abstract

Bulk metallic glass matrix composites have emerged as competent structural material of future bearing potential structural applications. However, the optimum percentage of crystallinity required to produce enough toughness that it can serve as structural component is still a matter of debate. In this study, an effort is made to address this problem by inoculation. A controlled amount of carefully selected inoculant is introduced in Zr47.5Cu45.5Al5Co2 bulk metallic glass matrix composite during melting and solidification. Its effect in promoting crystallinity is checked by detailed electron back scatter diffraction (EBSD) mapping. Proper pattern capture, background correction, binning, Hough space transformation, step size selection, indexing and matching with well-defined crystal structure files have shown to reflect upon map quality. This shows and bears direct relation with effect of inoculation. Results from two independent laboratories are reported. Inoculation treatment is shown to be advantageous.

Subject Areas

inoculation; composite; scattering; diffraction; crystallinity

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