Intermetallic particle explained

Intermetallic particles form during solidification of metallic alloys.

Aluminium alloys

Al-Si-Cu-Mg alloys

Al-Si-Cu-Mg alloys form Al5FeSi- plate like intermetallic phases like -Al8Fe2Si, Al2Cu, etc. The size and morphology of these intermetallic phases in these alloys control the mechanical properties of these alloys, especially strength and ductility.[1] The size of these phases depends on the secondary dendrite arm spacing,[2] as well as the Si content of the alloy,[3] [4] [5] [6] of the primary phase in the micro structure.

Phases and crystal structures

Phase Structure Space Group a b c α β γ ..
α-Al8Fe2Si[7] hexagonal p63/mmc(194) 12.404 12.404 26.23490 90 120 ..
β-Al5FeSi[8] monoclinic 2/m 6.167606.1661 20.8093 .. .. 91 ..
Al2Cu .. .. .. .. .. .. .. .. ..

Magnesium alloys

WE 43

In-situ synchrotron diffraction experiment[9] on Electron alloy-WE 43 (Mg4Y3Nd) shows that this alloy form the following intermetallic phases ;Mg12Nd, Mg14Y4Nd, and Mg24Y5.

Phases and crystal structures

Phase Structure Space Group a b c α β γ ..
Mg41Nd5 .. .. .. .. .... .. .. ..
β-Mg14Nd2Y[10] face centered cubic 2.2 nm.. .. ..
Mg24Y5 body centered cubic .. 1.12 nm .. .. .. .. .. ..

AZ 91

References

  1. Caceres, C. H. Svensson, I. L. Taylor, J. A.. Strength-ductility behaviour of Al-Si-Cu-Mg casting alloys in T6 temper. 5 . 10.1080/13640461.2003.11819539 . International Journal of Cast Metals Research . 2003 . 15 . 531–543.
  2. Sivarupan. Tharmalingam. Caceres. Carlos H.. Taylor. John A.. Alloy Composition and Dendrite Arm Spacing in Al-Si-Cu-Mg-Fe Alloys. Metallurgical and Materials Transactions A. 9 May 2013. 44. 9. 4071–4080. 10.1007/s11661-013-1768-x. 2013MMTA...44.4071S . 135926219.
  3. Sivarupan. Tharmalingam. Caceres. Carlos H.. Taylor. John A.. Effect of Si Content on the Size of Fe-Rich Intermetallic Particles in Al-xSi-0.8Fe Alloys. Materials Science Forum. July 2013. 765. 107–111. 10.4028/www.scientific.net/MSF.765.107. 10.1.1.1001.8916. 136622162.
  4. Book: 10.1002/9781118888100.ch17 . Effect of Si and Cu Content on the Size of Intermetallic Phase Particles in Al-Si-Cu-Mg-Fe Alloys . Shape/Tiryakioǧlu . 137–143. 2014. Sivarupan. T.. Taylor . J. A. . Cáceres . C. H. . 9781118888100 .
  5. 10.14264/uql.2015.91 . Ductility and solidification issues in Al-Si-Cu-Mg alloys. 2014. Sivarupan. Tharmalingam. PhD. School of Mechanical and Mining Engineering, The University of Queensland.
  6. Sivarupan. Tharmalingam. Taylor. John Andrew. Cáceres. Carlos Horacio. SDAS, Si and Cu Content, and the Size of Intermetallics in Al-Si-Cu-Mg-Fe Alloys. Metallurgical and Materials Transactions A. 25 February 2015. 46. 5. 2082–2107. 10.1007/s11661-015-2808-5. 2015MMTA...46.2082S . 136803392.
  7. R.N. Corby and P.J. Black: Acta Crystallogr. Sect. B, 1977, vol. 33, pp. 3468–75.
  8. V. Hansen, B. Hauback, M. Sundberg, C. Romming, and J. Gjonnes: Acta Crystallogr. Sect. B, 1998, vol. 54, pp. 351–57.
  9. Tolnai. D.. Mendis. C.L.. Stark. A.. Szakács. G.. Wiese. B.. Kainer. K.U.. Hort. N.. In situ synchrotron diffraction of the solidification of Mg4Y3Nd. Materials Letters. July 2013. 102-103. 62–64. 10.1016/j.matlet.2013.03.110. 2013MatL..102...62T .
  10. Web site: Archived copy . 2015-04-27 . https://web.archive.org/web/20140715205628/http://journalamme.org/papers_vol21_1/1385S.pdf . 2014-07-15 . dead .

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Intermetallic particle".

Except where otherwise indicated, Everything.Explained.Today is © Copyright 2009-2025, A B Cryer, All Rights Reserved. Cookie policy.