Intermetallic particle

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. The size of these phases depends on the secondary dendrite arm spacing, as well as the Si content of the alloy, of the primary phase in the micro structure.

Phases and crystal structures

Phase	Structure	Space Group	a	b	c	α	β	γ	..
α-Al₈Fe₂Si	hexagonal	p63/mmc(194)	12.404	12.404	26.234	90	90	120	..
β-Al₅FeSi	monoclinic	2/m	6.16760	6.1661	20.8093	..	..	91	..
Al₂Cu	..	..	..	..	..	..	..	..	..

Magnesium alloys

WE 43

In-situ synchrotron diffraction experiment 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	face centered cubic		2.2 nm			..	..		..
Mg₂₄Y₅	body centered cubic	..	1.12 nm	..	..	..	..	..	..

AZ 91

References

↑ Caceres, C. H. Svensson, I. L. Taylor, J. A. (2003). "Strength-ductility behaviour of Al-Si-Cu-Mg casting alloys in T6 temper". International Journal of Cast Metals Research. 15 (5): 531–543. doi:10.1080/13640461.2003.11819539.{{cite journal}}: CS1 maint: multiple names: authors list (link)
↑ Sivarupan, Tharmalingam; Caceres, Carlos H.; Taylor, John A. (9 May 2013). "Alloy Composition and Dendrite Arm Spacing in Al-Si-Cu-Mg-Fe Alloys". Metallurgical and Materials Transactions A. 44 (9): 4071–4080. Bibcode:2013MMTA...44.4071S. doi:10.1007/s11661-013-1768-x. S2CID 135926219.
↑ Sivarupan, Tharmalingam; Caceres, Carlos H.; Taylor, John A. (July 2013). "Effect of Si Content on the Size of Fe-Rich Intermetallic Particles in Al-xSi-0.8Fe Alloys". Materials Science Forum. 765: 107–111. doi:10.4028/www.scientific.net/MSF.765.107. S2CID 136622162.
↑ Sivarupan, T.; Taylor, J. A.; Cáceres, C. H. (2014). "Effect of Si and Cu Content on the Size of Intermetallic Phase Particles in Al-Si-Cu-Mg-Fe Alloys". Shape/Tiryakioǧlu. pp. 137–143. doi:10.1002/9781118888100.ch17. ISBN 978-1-118-88810-0.
↑ Sivarupan, Tharmalingam (2014). Ductility and solidification issues in Al-Si-Cu-Mg alloys (PDF) (PhD thesis). School of Mechanical and Mining Engineering, The University of Queensland. doi:10.14264/uql.2015.91.
↑ Sivarupan, Tharmalingam; Taylor, John Andrew; Cáceres, Carlos Horacio (25 February 2015). "SDAS, Si and Cu Content, and the Size of Intermetallics in Al-Si-Cu-Mg-Fe Alloys". Metallurgical and Materials Transactions A. 46 (5): 2082–2107. Bibcode:2015MMTA...46.2082S. doi:10.1007/s11661-015-2808-5. S2CID 136803392.
↑ R.N. Corby and P.J. Black: Acta Crystallogr. Sect. B, 1977, vol. 33, pp. 3468–75.
↑ V. Hansen, B. Hauback, M. Sundberg, C. Romming, and J. Gjonnes: Acta Crystallogr. Sect. B, 1998, vol. 54, pp. 351–57.
↑ Tolnai, D.; Mendis, C.L.; Stark, A.; Szakács, G.; Wiese, B.; Kainer, K.U.; Hort, N. (July 2013). "In situ synchrotron diffraction of the solidification of Mg4Y3Nd" (PDF). Materials Letters. 102–103: 62–64. Bibcode:2013MatL..102...62T. doi:10.1016/j.matlet.2013.03.110.
1 2 "Archived copy" (PDF). Archived from the original (PDF) on 2014-07-15. Retrieved 2015-04-27.{{cite web}}: CS1 maint: archived copy as title (link)

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[International_Journal_of_Cast_Metals_Research-1] Caceres, C. H. Svensson, I. L. Taylor, J. A. (2003). "Strength-ductility behaviour of Al-Si-Cu-Mg casting alloys in T6 temper". International Journal of Cast Metals Research. 15 (5): 531–543. doi:10.1080/13640461.2003.11819539.{{cite journal}}: CS1 maint: multiple names: authors list (link)

[Metallurgical_and_Materials_Transactions_A-2] Sivarupan, Tharmalingam; Caceres, Carlos H.; Taylor, John A. (9 May 2013). "Alloy Composition and Dendrite Arm Spacing in Al-Si-Cu-Mg-Fe Alloys". Metallurgical and Materials Transactions A. 44 (9): 4071–4080. Bibcode:2013MMTA...44.4071S. doi:10.1007/s11661-013-1768-x. S2CID 135926219.

[3] Sivarupan, Tharmalingam; Caceres, Carlos H.; Taylor, John A. (July 2013). "Effect of Si Content on the Size of Fe-Rich Intermetallic Particles in Al-xSi-0.8Fe Alloys". Materials Science Forum. 765: 107–111. doi:10.4028/www.scientific.net/MSF.765.107. S2CID 136622162.

[4] Sivarupan, T.; Taylor, J. A.; Cáceres, C. H. (2014). "Effect of Si and Cu Content on the Size of Intermetallic Phase Particles in Al-Si-Cu-Mg-Fe Alloys". Shape/Tiryakioǧlu. pp. 137–143. doi:10.1002/9781118888100.ch17. ISBN 978-1-118-88810-0.

[5] Sivarupan, Tharmalingam (2014). Ductility and solidification issues in Al-Si-Cu-Mg alloys (PDF) (PhD thesis). School of Mechanical and Mining Engineering, The University of Queensland. doi:10.14264/uql.2015.91.

[6] Sivarupan, Tharmalingam; Taylor, John Andrew; Cáceres, Carlos Horacio (25 February 2015). "SDAS, Si and Cu Content, and the Size of Intermetallics in Al-Si-Cu-Mg-Fe Alloys". Metallurgical and Materials Transactions A. 46 (5): 2082–2107. Bibcode:2015MMTA...46.2082S. doi:10.1007/s11661-015-2808-5. S2CID 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. (July 2013). "In situ synchrotron diffraction of the solidification of Mg4Y3Nd" (PDF). Materials Letters. 102–103: 62–64. Bibcode:2013MatL..102...62T. doi:10.1016/j.matlet.2013.03.110.

[journalamme.org-10] 1 2 "Archived copy" (PDF). Archived from the original (PDF) on 2014-07-15. Retrieved 2015-04-27.{{cite web}}: CS1 maint: archived copy as title (link)