Paper Titles
Simulation of X-Ray Powder Diffraction Patterns for One-Dimensionally Disordered Crystals
p.87
Reconstruction of Stress and Composition Profiles from X-Ray Diffraction Experiments — How to Avoid Ghost Stresses?
p.91
Contrast Factors and Character of Dislocations in Cubic and Hexagonal Crystals
p.95
Computer Simulation for X-Ray Analysis of Nanostructured Cu Processed by Severe Plastic Deformation
p.99
The Microstructure of Mechanically Alloyed Nanocrystalline Aluminium-Magnesium
p.103
Approximate Estimation of Contributions to Pure X-Ray Diffraction Line Profiles from Crystallite Shapes, Sizes and Strains by Analysing Peak Widths
p.107
Study of Submicrocrystalline Materials by Conventional Powder Diffraction and Diffuse Scattering in Transmitted Wave
p.111
Thickness Determination of Thin Polycrystalline Films by Grazing Incidence X-Ray Diffraction
p.115
XRD Line Broadening Analysis with Ball Milled Palladium
p.119

The Microstructure of Mechanically Alloyed Nanocrystalline Aluminium-Magnesium

Article Preview

Abstract:

The effect of the nominal Mg content and the milling time on the microstructure of mechanically alloyed Al(Mg) solid solutions is studied. The crystallite size distribution and the dislocation structure are determined by X-ray diffraction peak profile analysis. Magnesium gradually goes into solid solution during ball milling and after 3 h almost all of the Mg atoms are soluted into the Al matrix. With increasing milling time the Mg content in solid solution, the dislocation density as well as the hardness are increasing, whereas the crystallite size is decreasing. A similar tendency of these parameters is observed at a particular duration of ball milling with increasing of the nominal Mg content. At the same time for a long milling period the dislocation density slightly decreases together with a slight reduction of the hardness.

You might also be interested in these eBooks
European Powder Diffraction EPDIC 8 View Preview

Info:

Periodical:

Materials Science Forum (Volumes 443-444)

Pages:

103-106

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.443-444.103

Citation:

Cite this paper

Online since:

January 2004

Authors:

Jenő Gubicza, Magdy Kassem, Tamás Ungár

Keywords:

Crystallite Size, Dislocation Structure, Mechanical Alloying (MA), Nanocrystalline Al-Mg Alloys, X-Ray Peak Profile Analysis

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2004 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] L. Lu and Y. F. Zhang: J. Alloys and Compounds Vol. 290 (1999) p.279.

Google Scholar

[2] J. -H. Ahn and Y. -K. Paek: J. Mater. Sci. Letters Vol. 18 (1999) p.17.

Google Scholar

[3] J. I. Langford, D. Louer and P. Scardi: J. Appl. Cryst. Vol. 33 (2000) p.964.

Google Scholar

[4] C. E. Krill and R. Birringer: Phil. Mag. A Vol. 77 (1998) p.621.

Google Scholar

[5] M. Rand, J. I. Langford and J. S. Abell: Phil. Mag. B Vol. 68 (1993) p.17.

Google Scholar

[6] A. J. C. Wilson: X-ray Optics (Methuen, London 1962).

Google Scholar

[7] J. Gubicza, J. Szépvölgyi, I. Mohai, L. Zsoldos and T. Ungár: Mat. Sci. Eng. A Vol. 280 (2000) p.263.

Google Scholar

[8] M. A. Krivoglaz: Theory of X-ray and Thermal Neutron Scattering by Real Crystals (Plenum Press, New York 1996).

Google Scholar

[9] M. Wilkens: Phys. Stat. Sol. (a) Vol. 2 (1970) p.359.

Google Scholar

[10] M. Wilkens: Fundamental Aspects of Dislocation Theory ed. J. A. Simmons, R. de Wit, R. Bullough, Vol. II. Nat. Bur. Stand. (US) Spec. Publ. No. 317, Washington, DC. USA (1970) p.1195.

DOI: 10.6028/nbs.sp.317v1

Google Scholar

[11] P. Klimanek and Jr R. Kuzel: J. Appl. Cryst. Vol. 21 (1988) p.59.

Google Scholar

[12] T. Ungár and A. Borbély: Appl. Phys. Lett. Vol. 69 (1996) p.3173.

Google Scholar

[13] P. Scardi and M. Leoni: J. Appl. Cryst. Vol. 32 (1999) p.671.

Google Scholar

[14] T. Ungár, J. Gubicza, G. Ribárik and A. Borbély: J. Appl. Cryst. Vol. 34 (2001) p.298.

Google Scholar

[15] G. Ribárik, T. Ungár and J. Gubicza: J. Appl. Cryst. Vol. 34 (2001) p.669.

Google Scholar

[16] A. R. Stokes: Proc. Phys. Soc. London Vol. 61 (1948) p.382.

Google Scholar

[17] D. M. Pool & H. J. Axon: J. Inst. Met. Vol. 80 (1952) p.599.

Google Scholar

[18] I. Kovács, J. Lendvai and E. Nagy: Acta Met. Vol. 20 (1972) p.975.

Google Scholar

[19] T. Ungár, I. Dragomir, Á. Révész and A. Borbély: J. Appl. Cryst. Vol. 32 (1999) p.992.

Google Scholar