Transactions of the Indian Institute of Metals

, Volume 71, Issue 11, pp 2671–2676 | Cite as

Effect of Cooling Rate and Neodymium Addition on Beta Intermetallic Phase of Al–Fe–Si Ternary System

  • D. Ferdian
  • K. Saputra Irawan
  • J. Lacaze
Technical Paper


Aluminium silicon alloys are widely used in automotive industry and other structural application. However, the presence of high content of iron element in Al–Si alloys lead to precipitation of beta intermetallic phase that has a detrimental effect on mechanical properties. Reducing the adverse effects of β-Al9Fe2Si2 precipitates can be achieved by altering their morphology by adding element modifier and increasing solidification cooling rate. In this present work, simultaneous thermal analysis was used to study the effect of cooling rate (5, 10 and 30 °C min−1) on beta phase formation in Al–7Si–1Fe alloy added with neodymium at 0.3, 0.6 and 1 wt%. The beta phase precipitates were then characterized using optical microscopy and scanning electron microscopy equipped with EDS. Image analysis results showed the reduction in size of beta intermetallic phase as a result of the rare earth addition. Further analysis also showed the refinement of eutectic silicon.


Neodymium Cooling rate Beta intermetallic phase Al–Si alloys 


  1. 1.
    Samuel A M, Samuel F H, and Doty H W, J Mater Sci 31 (1996) 5529.CrossRefGoogle Scholar
  2. 2.
    Khalifa W, Samuel F H, and Gruzleski J E, Metall Mater Trans. A 34 (2003) 807.CrossRefGoogle Scholar
  3. 3.
    Ferdian D., Suharno B., Duployer B, Duployer B, Tenailleau C, Salvo L, and Lacaze J, Trans Indian Inst Met 65 (2012) 821.CrossRefGoogle Scholar
  4. 4.
    Gorny. A, Manickaraj J, Cai Z, and Shankar B, J Alloys Compd, 577 (2013) 103.CrossRefGoogle Scholar
  5. 5.
    Munson D, J Inst Met, 95 (1967) 217.Google Scholar
  6. 6.
    Li Z, and Yan H, J Rare Earths 33 (2015) 995.CrossRefGoogle Scholar
  7. 7.
    Ghoncheh MH, Shabestari SG, and Abbasi MH, Therm Anal Calorim 117 (2014) 1253.CrossRefGoogle Scholar
  8. 8.
    Rao Y, Yan H, and Hu Z, J Rare Earths 33 (2013) 916.CrossRefGoogle Scholar
  9. 9.
    Schneider C A; Rasband W S, and Eliceiri K W, Nature methods 9 (2012) 671.CrossRefGoogle Scholar
  10. 10.
    Raghavan V, JPEDAV 33, 920120, 66.Google Scholar
  11. 11.
    Lu S Z, and Hellawell A. Metall Trans A 18 (1987) 1721.CrossRefGoogle Scholar
  12. 12.
    Timpel M, Wanderka N, Schlesiger N, Yamamoto T, Lazarev N, Isheim D, Schmitz G, Matsumura S, and Banhart J, Acta Mater 60 (2012) 3920.CrossRefGoogle Scholar
  13. 13.
    Barrirero J, Engstler M, Ghafoor N, de Jonge N, Odén M, and Mücklich F, J Alloys Compd 611 (2014) 410.CrossRefGoogle Scholar

Copyright information

© The Indian Institute of Metals - IIM 2018

Authors and Affiliations

  1. 1.Department of Metallurgy and Materials EngineeringUniversitas IndonesiaDepokIndonesia
  2. 2.CIRIMATUniversité de Toulouse, ENSIACETToulouse Cedex 4France

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