Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-13T02:18:50.240Z Has data issue: false hasContentIssue false
  • English
  • Français

Microstrcutural Evolution of SiC Fibre Embedded AA6061 Matrix Induced by Ultrasonic Consolidation

Published online by Cambridge University Press:  01 February 2011

Z. Zhu ,
B.P Wynne  and
Elaheh Ghassemieh
Z. Zhu
Affiliation:
Mechanical Eng., Nanchang University, Nanchang, 330031, China, People's Republic of
B.P Wynne
Affiliation:
B.Wynne@sheffield.ac.uk, University of Sheffied, Materials Eng., Mappin Street, Sheffield, S1 3JD, United Kingdom
Elaheh Ghassemieh
Affiliation:
E.Ghassemieh@sheffield.ac.uk, University of Sheffied, Mechanical Engineering, Mappin Street, Sheffield, S1 3JD, United Kingdom, 44(0)114-2227868
Get access

Abstract

Ultrasonic consolidation (UC) uses high frequency (20-40KHz) mechanical vibrations to produce a solid-state metallurgical bond (weld) between metal foils. UC as a novel layered manufacturing technique is used in this research to embed reinforcing members such as silicon carbide fibers into the aluminium alloy 6061's matrices. It is known that UC induce volume and surface effect in the material it is acting on. Both effects are employed in embedding active/passive elements in the metal matrix. Whilst the process and the two effects are used and identified at macro level, what is happening at micro level is unknown and hardly studied. In this research we are investigating the phenomena occurring in the microstructure of the parts during UC process to obtain better understanding about how and why the process works.

In this research, high-resolution electron backscatter diffraction is used to study the effects of the UC process on the evolution of microstructure in AA6061 with and without fibre elements.

The inverse pole figures (IPF), pole figures (PF) and the correlated misorientation angle distribution of the mentioned samples are obtained. The characteristics of the crystallographic orientation, the grain structure and the grain boundary are analysed to find the effect of ultrasonic vibration and embedding fibre on the microstructure and texture of the bond. The ultrasonic vibration will lead to exceptional refinement of grains to a micron level along the bond area and affect the crystallographic orientation. Additional plastic flow occurs around the fibre which leads to the fibre embedding.

Keywords

microstructureweldingscanning electron microscopy (SEM)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1075: Symposium J – Passive and Electromechanical Materials and Integration , 2008 , 1075-J05-03
Copyright
Copyright © Materials Research Society 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1] O'Brien, R.l., Welding Handbook, vol.2, eighth ed., Wedling Processes, American Welding Society, Miami, 1991, pp: 783–812 Google Scholar
[2] Daniels, H.P.C., Ultrasonic 3 (1965):190–196 Google Scholar
[3] White, D.R. Adv. Mater. Proc. 161 (2003): 64–65 Google Scholar
[4] Eaves, A.E., Smith, A.W., Waterhouse, W.J., Sansome, D.H., Ultrasonics, 13(4),1975: 162–170 Google Scholar
[5] Kearns, W.H., editor, Welding Handbook Seventh Edition, Volume 3- Resistance and Solid-state Welding and Other Joining Process, American Welding Society, Miami, 1980, ISBN 0871711885: 279–310 Google Scholar
[6] Kong, C.Y. Investigation of Ultrasonic Consolidation for Embedding Active/Passive Fibres in Aluminium Matrices. Ph.D thesis. Loughborugh University. 2005.5., p61–64 Google Scholar
[7] Pohlman, R. and Lehfeldt, E.. Ultrasonics, 4 (1966) 178–185 Google Scholar
[8] Clyne, T.W. Watson, M.C. Composites Sci. Technol. 42 (1991) 25.Google Scholar
[9] Metcalfe, A.G. Interfaces in Metal Composites, Academic Press, New York, 1974.Google Scholar
[10] Evans, A.G. Marshall, D.B. Acta Metall. 37 (1989) 2567.Google Scholar
[11] Fu, Y.C. Shia, N.L. Zhanga, D.Z. and Yang, R.. Materials Science and Engineering: A. Volume 426, Issues 1-2, 25 June 2006, Pages 278–282 Google Scholar
[12] Luo, X. Yang, Y.Q. Liu, Y.C. Ma, Z.J. Yuan, M.N. and Chen, Y.. Materials Science and Engineering: A. Volume 459, Issues 1-2, 25 June 2007, Pages 244–250 Google Scholar
[13] Guo, S. Q. Kagawa, Y. Saito, H. and Masuda, C.. Materials Science and Engineering A. Volume 246, Issues 1-2, 15 May 1998, Pages 25–35 Google Scholar
[14] Kong, C.Y., Soar, R.C. Materials Science and Engineering A 412 (2005) 12–18 Google Scholar
[15] Kuroda, Mitsutoshi, AIP Conference Proceedings, Aug 2005. p445–450 Google Scholar
[16] Randle, V., 1992, Microtexture determination and its application, Institute Materials, London Google Scholar
[17] NoguitaK, , DahleAK, . Mater. Charact. 2001;46(4):305–10.Google Scholar