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Line Shape Analysis of Deformed Cu-Ge Alloys

Published online by Cambridge University Press:  06 March 2019

M. Ahlers  and
L. F. Vassamillet
M. Ahlers
Affiliation:
Mellon Institute Pittsburgh, Pennsylvania
L. F. Vassamillet
Affiliation:
Mellon Institute Pittsburgh, Pennsylvania
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Abstract

The asymmetry of diffraction peaks of deformed α-Cu-Ge alloy filings is determined by the center of gravity and Fourier coefficient method with computer calculations. It is shown that it is not possible to describe the asymmetry by a simple value that is a characteristic of the extent of the deformation and the Miller indices of the peak. Instead the asymmetry is highly dependent upon the initial arbitrary conditions for evaluation, which throws some doubt on the reliability of published twin fault and stacking fault probabilities.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 10: Fifteenth Annual Conference on Applications of X-ray Analysis, August 10-12, 1966 , 1966 , pp. 265 - 272
Copyright
Copyright © International Centre for Diffraction Data 1966

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References

1. Paterson, M. S., “X-Ray Diffraction by Face-Centered Cubic Crystals with Deformation Faults,” J. Appl. Phys. 23: 805, 1952.Google Scholar
2. Warren, B. E. and Warekois, E. P., “Stacking Faults in Cold Worked Alpha-Brass,” Acta Met. 3: 473, 1955.Google Scholar
3. Warren, B. E., “X-Ray Measurement of Twin Faulting in Face-Centered Cubic Crystals,” Australian J. Phys. 13: 384, 1960.Google Scholar
4. Wagner, C. N. J., “Stacking Faults by Low Temperature Cold Work in Copper and Alpha-Brass”. Acta Met. 5: 427, 1957.Google Scholar
5. Otte, H. M., “Lattice Parameter Studies of Annealed, of Aged, and of Cold-Worked Alpha Brass,” J. Appl. Phys. 33: 1436, 1962.Google Scholar
6. Davies, R. G. and Cahn, R. W., “Stacking Fault Densities in Film ings of Some Copper- and Silver-Base Solid Solutions,” Acta Met. 10: 621, 1962.Google Scholar
7. Vassamillet, L. F., “Stacking Fault Probability of Noble Metal-Zinc Alloys,” J. Appl. Phys. 32: 778, 1961.Google Scholar
8. Cohen, J. B. and Wagner, C. N. J., “Determination of Twin Fault Probabilities from the Diffraction Patterns of fee Metals and Alloys,” J. Appl. Phys. 33: 2073, 1962.Google Scholar
9. Mikkoia, D. E. and Cohen, J. B., “Effects of Thermal-Mechanical Treatments on Faulting in Some fcc Alloys,” J. Appl. Phys. 33: 892, 1962.Google Scholar
10. Vassamillet, L. F. and Massalski, T. B., “X-Ray Measurements of Faulting in a-Cu-Ge Alloys,” J. Appl. Phys. 35: 2629, 1964.Google Scholar
11. Otte, H. M., “Lattice Parameter Determinations with an X-Ray Spectrogoniometer by the Debye-Scherrer Method and the Effect of Specimen Condition,’ ‘ J. Appl. Phys. 32: 1536, 1961.Google Scholar
12. Wagner, C. N. J. and Helion, J. C., “X-Ray Measurements of Stacking Faults and Internal Strains in a-Cu-Zn and a-Cu-Sn,” J. Appl. Phys. 36: 2830, 1965.Google Scholar
13. Pike, E. R. and Wilson, A. J. C., “Counter Diffractometer—The Theory of the Use of Centroids of Diffraction Profiles for High Accuracy in the Measurement of Diffraction Angles,” Brit. J. Appl. Phys. 10: 57, 1959.Google Scholar
14. Stokes, A. R., “A Numerical Fourier Analysis Method for the Correction of Widths and Shapes of Lines and X-Ray Powder Photographs,” Proc. Phys. Soc. London 61: 382, 1948.Google Scholar