Home Technology Dilatometry revealing Si precipitation in Al–Si-alloys
Article
Licensed
Unlicensed Requires Authentication

Dilatometry revealing Si precipitation in Al–Si-alloys

  • Fernando Lasagni , Myriam Dumont , Côme Salamida , Jorge Antonio Acuña and H. Peter Degischer
Published/Copyright: June 11, 2013
Become an author with De Gruyter Brill
Submit Manuscript Author Information
International Journal of Materials Research
From the journal International Journal of Materials Research Volume 100 Issue 7

Abstract

The precipitation kinetics of Si after different thermal treatments in AlSi-alloys have been studied by means of isothermal calorimetry, differential scanning calorimetry and dilatometry tests. The measured exothermic and endothermic effects produced by the precipitation and dissolution of Si are correlated with the increase and reduction in the coefficient of thermal expansion CTE(T), respectively. The deviation of the CTE(T) of the studied AlSi1.1 – 1.7 alloys with respect to pure Al correspond to the volume fraction of precipitating Si according to thermodynamic solubility limits. Two different kinetics in the growth of Si precipitates are distinguished: while Si precipitates in the range of 200 – 300 °C during heating of solution quenched samples supersaturated with vacancies, retardation into the temperature range of 300 – 420 °C is observed in samples slowly cooled after solution treatment. The presence of the eutectic Si increases the quench sensitivity of the precipitation kinetics of Si as observed in CTE(T) curves. The ripening of the eutectic Si during prolonged solution treatment retards the Si precipitation slightly.

Keywords: Si precipitation; Thermal expansion; Differential scanning calorimetry (DSC); Dilatometry
* Correspondence address, Prof. Dr. H. Peter Degischer, TU-Wien, Karlsplatz 13/E308, A-1040 Vienna, Austria, Tel.: +43 1 58801 30811, Fax: +43 1 58801 30899, E-mail:

References

[1] I.J.Polmear: Light alloys: Metallurgy of Light Metals, Edward Arnold, London (1996).Search in Google Scholar

[2] Metals Handbook, Vol. 2: Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM International10th (Ed.) (1990).Search in Google Scholar

[3] Metals Handbook, Vol. 1: Properties and Selection: Irons, Steels, and High-Performance Alloys, American Soc, for Metals, Materials Park OH (1985).Search in Google Scholar

[4] http://www.thermocalc.comSearch in Google Scholar

[5] C.J.Smithells: Metals Reference Book, 6th (Ed.), E.A. Brandes, Butterworths, London (1983).10.1063/1.3061853Search in Google Scholar

[6] R.Spear, G.Gardner, in: Metals Handbook, Vol. 15: Solidification of Eutectic Alloys: Aluminum-Silicon Alloys, Trans. AFS, Vol. 71, American Soc. for Metals, Materials Park OH (1963).Search in Google Scholar

[7] F.Lasagni, H.P.Degischer, M.Papakyriacou: Prakt. Metallogr.43–10 (2006) 505.Search in Google Scholar

[8] G.Neite, S.Mielke; Mat. Sci. Eng. A148–1 (1991) 85.10.1016/0921-5093(91)90868-NSearch in Google Scholar

[9] S.Q.Wu, Z.S.Wei, S.C.Tjong; Comp. Sci. Tech.60–15 (2000) 2873.10.1016/S0266-3538(00)00160-3Search in Google Scholar

[10] D.Segers, P.Van Mourik, M.H.Van Wijngaarden, B.M.Rao: Phys. Stat. Sol. (a)81 (1984) 209.Search in Google Scholar

[11] M.Van Rooyen, E.J.Mittmeijer: Mater. Trans. A20 (1989) 1207.Search in Google Scholar

[12] F.Lasagni, B.Mingler, M.Dumont, H.P.Degischer: Mater. Sci. Eng. A480 (2008) 383.Search in Google Scholar

[13] M.J.Starink: Int. Mat. Rev.49 (2004) 191.10.1017/S0020859004001464Search in Google Scholar

[14] A.Saulnier: Mém. Sci. Rev. Métall.58 (1961) 615.Search in Google Scholar

[15] P.Van Mourik, T.H.de Keijser, E.J.Mittemeijer: Scripta Mater.21 (1987) 318.Search in Google Scholar

[16] O.R.Myhr, Ø.Grong: Acta Mater.48–7 (2000) 1605.Search in Google Scholar

[17] M.Nicolas, A.Deschamps: Acta Mater.51–20 (2003) 6077.Search in Google Scholar

[18] R.Wagner, R.Kampmann: Materials Science and Technology; a Comprehensive Treatment. Vol. 5. Wiley-VCH, Weinheim (1991).Search in Google Scholar

[19] C.Zener: J. Appl. Phys.20 (1949) 950.10.1063/1.1698258Search in Google Scholar

[20] H.B.Aaron, G.R.Kotler: Met. Trans.2 (1971) 393.Search in Google Scholar

[21] F.Lasagni, A.Lasagni, C.Holzapfel, F.Mücklich. H.P.Degischer: Acta Mater.55 (2007) 3875.Search in Google Scholar

[22] F.Lasagni, H.R.M.Semmani, A.Falahati, H.P.Degischer, in: Proc. 15th IFHTSE and SMT 20 Conf., Vienna (2006) Paper-Nr. HT6.Search in Google Scholar

[23] M.A.Portevin, P.Chevenard: Étude dilatométrique des alliages d'aluminium avec le magnésium et le silicium, Seance de la Academie des Siences, Paris (1923) 296–298.Search in Google Scholar

Received: 2008-1-31
Accepted: 2009-4-15
Published Online: 2013-06-11
Published in Print: 2009-07-01

© 2009, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. Feature
  4. Intermolecular slip mechanism in tropocollagen nanofibrils
  5. Basic
  6. Identification of model parameters from elastic/elasto-plastic spherical indentation
  7. Penetration of a pyramid indenter into a multilayer coating
  8. Nanoindentation of pseudoelastic NiTi shape memory alloys: Thermomechanical and microstructural aspects
  9. Analysis of nanoindentation curves in the case of bulk amorphous polymers
  10. Effect of indenter shapes on inverse materials characterization based on the dual indenters method
  11. Applied
  12. Creep properties from indentation tests by analytical and numerical techniques
  13. Analysis of nanoindentation and nanoscratch experiments of thin amorphous carbon coatings and multilayers: friction, wear and elastic – plastic deformation
  14. Mutual consistency of hardness testing at micro- and nanometer scales
  15. Friction and adhesion of carbon nanotube brushes
  16. Mechanical testing of single yeast cells in liquid environment: Effect of the extracellular osmotic conditions on the failure behavior
  17. UFG and nanocrystalline microstructures produced by hydrostatic extrusion of multifilament wires
  18. In-situ high temperature microstructural analysis during tempering of 42CrMo4 using transmission electron microscopy
  19. Mixing enthalpies in Ag–Ca, Ag–Eu and Ag–Yb liquid alloys
  20. Dilatometry revealing Si precipitation in Al–Si-alloys
  21. Notifications
  22. DGM News
https://doi.org/10.3139/146.110145
Keywords for this article
Si precipitation; Thermal expansion; Differential scanning calorimetry (DSC); Dilatometry

Articles in the same Issue

  1. Contents
  2. Contents
  3. Feature
  4. Intermolecular slip mechanism in tropocollagen nanofibrils
  5. Basic
  6. Identification of model parameters from elastic/elasto-plastic spherical indentation
  7. Penetration of a pyramid indenter into a multilayer coating
  8. Nanoindentation of pseudoelastic NiTi shape memory alloys: Thermomechanical and microstructural aspects
  9. Analysis of nanoindentation curves in the case of bulk amorphous polymers
  10. Effect of indenter shapes on inverse materials characterization based on the dual indenters method
  11. Applied
  12. Creep properties from indentation tests by analytical and numerical techniques
  13. Analysis of nanoindentation and nanoscratch experiments of thin amorphous carbon coatings and multilayers: friction, wear and elastic – plastic deformation
  14. Mutual consistency of hardness testing at micro- and nanometer scales
  15. Friction and adhesion of carbon nanotube brushes
  16. Mechanical testing of single yeast cells in liquid environment: Effect of the extracellular osmotic conditions on the failure behavior
  17. UFG and nanocrystalline microstructures produced by hydrostatic extrusion of multifilament wires
  18. In-situ high temperature microstructural analysis during tempering of 42CrMo4 using transmission electron microscopy
  19. Mixing enthalpies in Ag–Ca, Ag–Eu and Ag–Yb liquid alloys
  20. Dilatometry revealing Si precipitation in Al–Si-alloys
  21. Notifications
  22. DGM News
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2026 De Gruyter Brill
Downloaded on 1.2.2026 from https://www.degruyterbrill.com/document/doi/10.3139/146.110145/html
Scroll to top button