Skip to main content Accessibility help
×
Home

Changes in the Bragg-Williams Parameter with Deformation in Ordered Au4V

  • B. G. LeFevre (a1) and E. A. Starke (a1)

Abstract

The intermetallic compound Au4V is known to be ferromagnetic at temperatures below 43°K. Its ferromagnetism, which has been attributed to long range order, can he destroyed by cold deformation. The present study was undertaken to determine how the Bragg and Williams long-range-order parameter of the fully-ordered alloy varied as a function of deformation by cold rolling. Because of complexities in the diffraction spectrum it was not possible to determine 5 by a simple ratio of integrated intensities as is frequently done in other ordered systems, A treatment was developed to handle these difficulties using a modification of a method developed by Giamei and Freise for determining volume fractions of mixed phases. These results are correlated with magnetic measurements made by Chin and coworkers at Bell Laboratories.

Copyright

References

Hide All
1. Creveling, L., Luo, L. H., and Knapp, G. S., “Ferromagnetism in Au4V,” Phys. Rev. Letter 18:851852, 1967.
2. Koster, W. and Nordakog, H., “The Binary Alloy System Gold- Vanadium,” Z. Metall. 51:501502, 1960.
3. Chin, G. Y., Wernick, J. H., Sherwood, R. C. and Mendorf, D. R., “Deformation Induced Magnetic Disorder in the Ferromagnet AU4V,” ,Solid State Communications 6:153157, 1968,
4. Giamei, A. F. and Freise, E. J., “Optimization of X-ray Diffraction Quantitative Analysis,” Trans. Met, Soc. AIME 239:16761685, 1967.
5. Sturcken, E. F., “An X-ray Method for Predicting the Stability of Natural Uranium at Low Burnups,” U.S. Atomic Energy Commission Report DP-251, 1957.
6. Sparks, C. J. and Borie, B., “Methods of Analysis for Diffuse X-ray Scattering modulated by Local Order and Atomic Displacements,” in J. B. Cohen and J. E. Hilliard, Editors, Local Atomic Arrangements Studied by X-ray Diffraction, Gordon and Breach, New York, 1966.
7. Harker, D., “The Crystal Structure of Ni4Mo,” J. Chem. Phys. 12:315317, 1944.
8. Brooks, C. R. and Spruiell, J. E., “Electron Microsopic Observations of Dislocations in Nickel and Ni-Mo Alloys,” Met. Res. Bull. 3:381388, 1968.

Changes in the Bragg-Williams Parameter with Deformation in Ordered Au4V

  • B. G. LeFevre (a1) and E. A. Starke (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed