Transmission EBSD - Bridging the Gap between SEM and TEM

Avishai, Amir; Carter, J.; Azar, Maryam Zahiri; Narayanan, Badri; Heuer, A. H.

doi:10.1017/s1431927613005461

Cited by 9 publications

(8 citation statements)

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“…Overtime, various studies have also been reported which shed light on different aspects of their manufacturing [23,69,70] and microstructural development [8,[71][72][73]. These include observations under transmission electron microscopy [74], synchrotron light [75][76][77][78] and in-situ studies [14,74,79,80] but none have been made on the detailed use of more recent and advanced electron back scattered diffraction [81][82][83][84][85][86][87][88]. Few efforts have been made in this regard [32,44,65,[89][90][91][92][93], but none exist on its application on inoculated composites [22].…”

Section: Introductionmentioning

confidence: 99%

Diffraction patterning using back scattering of electrons in Zr47.5Cu45.5Al5Co2 Bulk Metallic Glass Matrix Composites

Rafique

2023

Preprint

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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 is checked by detailed diffraction patterning using back scattering of electrons in scanning microscopy using a detector. 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 pattern and map quality. This shows and bears direct relation with effect of inoculation. Results from two independent laboratories are reported. Diffraction is observed and indicates towards presence of crystalline phases. Inoculation treatment is shown to be advantageous.

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Section: Introductionmentioning

confidence: 99%

Diffraction patterning using back scattering of electrons in Zr47.5Cu45.5Al5Co2 Bulk Metallic Glass Matrix Composites

Rafique

2023

Preprint

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“…Only three notable studies have been recently reported [40] [41] [42] but they are only qualitative and are limited by mere generalised phase identification. This is a new and unique technique which has been reported as complimentary to transmission electron microscopy [43] [44]. It has unique ability to identify [45] and map crystallinity in materials [46] [47] [48] [49].…”

Section: Introductionmentioning

confidence: 99%

Effect of Inoculation on Phase Formation and Indentation Hardness Behaviour of Zr47.5Cu45.5Al5Co2 and Zr65Cu15Al10Ni10 Bulk Metallic Glass Matrix Composites

Rafique¹

2018

ENG

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Bulk metallic glass matrix composites have emerged as a new potential material for structural engineering applications owing to their superior strength, hardness and high elastic strain limit. However, their behaviour is dubious. They manifest brittleness and inferior ductility which limit their applications. Various methods have been proposed to overcome this problem. Out of these, introduction of foreign particles (inoculants) during solidification has been proposed as the most effective. In this study, an effort has been made to delimit this drawback. A systematic tale has been presented which explains the evolution of microstructure in Zr 47.5 Cu 45.5 Al 5 Co 2 and Zr 65 Cu 15 Al 10 Ni 10 bulk metallic glass matrix composites with varying percentage of ZrC inoculant as analysed by secondary electron, back scatter electron imaging of "as cast" unetched samples and indentation microhardness testing. Secondary electron imaging of indents was also performed which shows development of shear transformation zones at edges of square of indents. Mostly, no cracking was observed, few cracks bearing Palmqvist morphology were witnessed in samples containing lower percentage of inoculant. A support is provided to hypothesis that inoculations remain successful in promoting phase formation and crystallinity and improving toughness.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Few efforts have been made in this regard [32,44,65,[89][90][91][92][93], but none exist on its application on inoculated composites [22]. This is a new and unique technique which has been reported as complimentary to transmission electron microscopy [86,94]. It has unique ability to identify [81] and map crystallinity in materials [83,84,87,95].…”

Section: Introductionmentioning

confidence: 99%

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

Rafique¹,

Brandt²,

Easton³

2018

Preprint

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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.

show abstract

Transmission EBSD - Bridging the Gap between SEM and TEM

Abstract: Extended abstract of a paper presented at Microscopy and Microanalysis 2013 in Indianapolis, Indiana, USA, August 4 – August 8, 2013.

Cited by 9 publications

References 0 publications

Diffraction patterning using back scattering of electrons in Zr47.5Cu45.5Al5Co2 Bulk Metallic Glass Matrix Composites

Diffraction patterning using back scattering of electrons in Zr47.5Cu45.5Al5Co2 Bulk Metallic Glass Matrix Composites

Effect of Inoculation on Phase Formation and Indentation Hardness Behaviour of Zr<SUB>47.5</SUB>Cu<SUB>45.5</SUB>Al<SUB>5</SUB>Co<SUB>2</SUB> and Zr<SUB>65</SUB>Cu<SUB>15</SUB>Al<SUB>10</SUB>Ni<SUB>10</SUB> Bulk Metallic Glass Matrix Composites

EBSD Microstructure Mapping of Zr<sub>47.5</sub>Cu<sub>45.5</sub>Al<sub>5</sub>Co<sub>2</sub> Bulk Metallic Glass Matrix Composite to Ascertain the Effect of Inoculation in Promoting Crystallinity

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