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μ-EXAFS and μ-XRD study of selected regions of a Al–Fe–Cr–Ti complex alloy

Published online by Cambridge University Press:  21 January 2011

E. Liotti ,
S. C. Hogg ,
C.A. Kirk ,
P. Quinn  and
P. S. Grant
E. Liotti*
Affiliation:
Department of Materials, Loughborough University, Loughboroungh, LE11 3TU, UK
S. C. Hogg
Affiliation:
Department of Materials, Loughborough University, Loughboroungh, LE11 3TU, UK
C.A. Kirk
Affiliation:
Department of Chemistry, Loughborough University, Loughboroungh, LE11 3TU, UK
P. Quinn
Affiliation:
Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
P. S. Grant
Affiliation:
Department of Materials, Oxford University, Parks Road, Oxford, OX1 3PH, UK
*
†Email address for correspondence: [email protected]
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Abstract

Al3Ti, Al13Cr2 and Al13Fe4 are important intermetallics in a number of Al alloy systems including complex ultra-high-strength systems with excellent elevated-temperature performance. A full knowledge of their properties and crystallographic structures is a key factor for the understanding of these complex alloys. In the present study samples of the three pure intermetallics were prepared and regions of interest identified in a billet of Al93Fe3Cr2Ti2 alloys and 20 × 10 × 2 µm samples extracted utilizing a Focussed Ion Beam Transmission Electron Microscopy (FIB TEM) sample preparation technique. Using the microfocus spectroscopy beamline I18 at Diamond Light Source we were able to examine 5 µm sections of the samples using X-ray Diffraction (μ-XRD) and Extended X-ray Absorption Fine Structure (μ-EXAFS) in an attempt to describe the local structure of the second-phase particles and characterized the microstructure of the FIBed samples to selectively illuminate the different phases.

Type
Poster paper
Information
Diamond Light Source Proceedings , Volume 1 , Issue SRMS-7 , October 2010 , e132
Copyright
Copyright © Diamond Light Source Ltd 2011

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References

REFERENCES

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