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Shape Casting pp 321-328 | Cite as

The Effect of Friction Stir Processing on Bifilms and Structural Quality in A356 Alloy Castings

  • Nelson Netto
  • Murat TiryakioğluEmail author
  • Paul D. Eason
  • Boğaçhan Őndeş
  • Eray Erzi
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

The effect of friction stir processing (FSP) on the structural quality was tested in two A356 alloy ingots: conventional and continuously cast. Reduced pressure tests and microstructural analysis showed that the initial quality and microstructure in the two ingots were significantly different. The structural quality, as measured by the quality index QT, of the conventional ingot improved with each FSP pass, whereas that of the continuously cast ingot went up after the first pass and remained essentially constant with additional passes. The contribution of microstructural refinement as a result of FSP on the improvement of structural quality remains unknown. However, the largest contribution comes from bifilms breaking up during the friction stir process.

Keywords

Bifilms Microstructural refinement Quality index 

References

  1. 1.
    John Baruch L, Raju R, Balasubramanian V, Rao AG, Dinaharan I (2016) Acta Metal Sin (English Letters) 29:431–440Google Scholar
  2. 2.
    Staley JT Jr, Tiryakioğlu M, Campbell J (2007) Mater Sci Eng A 465:136–145CrossRefGoogle Scholar
  3. 3.
    Staley JT Jr, Tiryakioğlu M, Campbell J (2007) Mater Sci Eng A 460–461:324–334CrossRefGoogle Scholar
  4. 4.
    Katgerman DGEL (2008) In search of prediction of hot cracking in aluminium alloys. In: Thomas Bollinghaus HH, Cross CE, Lippold JC (eds) Hot cracking phenomena in welds II. Springer, Berlin, pp 3–18Google Scholar
  5. 5.
    Nazarboland A, Elliott R (1997) Int J Cast Met Res 10:87–97CrossRefGoogle Scholar
  6. 6.
    Yousefian P, Tiryakioğlu M (2018) Metall Mater Trans A 49:563–575CrossRefGoogle Scholar
  7. 7.
    Tiryakioğlu M, Yousefian P, Eason PD (2018) Metall Mater Trans A 49:5815–5822CrossRefGoogle Scholar
  8. 8.
    Mishra RS, Mahoney M, McFadden S, Mara N, Mukherjee A (1999) Scripta Mater 42:163–168CrossRefGoogle Scholar
  9. 9.
    Mishra RS, Mahoney MW (2001) Mater Sci Forum. Trans Tech Publ, 507–514Google Scholar
  10. 10.
    Mishra RS, Ma ZY (2005) Mater Sci Eng R Rep 50:1–78CrossRefGoogle Scholar
  11. 11.
    Jana S, Mishra RS, Grant G (2015) Friction stir casting modification for enhanced structural efficiency: a volume in the friction stir welding and processing book series. Butterworth-HeinemannGoogle Scholar
  12. 12.
    Alidokht SA, Abdollah-zadeh A, Soleymani S, Saeid T, Assadi H (2012) Mater Charact 63:90–97CrossRefGoogle Scholar
  13. 13.
    Ma ZY, Sharma SR, Mishra RS (2006) Mater Sci Eng A 433:269–278CrossRefGoogle Scholar
  14. 14.
    Ma ZY, Sharma SR, Mishra RS (2006) Metall Mater Trans A 37:3323–3336CrossRefGoogle Scholar
  15. 15.
    Sun N, Apelian D (2012) TMS 2012 141st Annual meeting and exhibition, materials properties, characterization, and modeling Wiley, p 411Google Scholar
  16. 16.
    Sharma SR, Ma ZY, Mishra RS (2004) Scripta Mater 51:237–241CrossRefGoogle Scholar
  17. 17.
    Netto N, Tiryakioğlu M, Eason PD (2018) Light metals. Springer, pp 417–422Google Scholar
  18. 18.
    Tiryakioğlu M, Campbell J (2014) Int J Metalcast 8:39–42CrossRefGoogle Scholar
  19. 19.
    Tiryakioğlu M, Campbell J, Alexopoulos ND (2009) Mater Sci Eng A 506:23–26CrossRefGoogle Scholar
  20. 20.
    Tiryakioğlu M, Campbell J, Alexopoulos ND (2009) Metall Mater Trans A 40:1000–1007CrossRefGoogle Scholar
  21. 21.
    Tiryakioğlu M, Campbell J, Alexopoulos ND (2009) Metall Mater Trans B 40:802–811CrossRefGoogle Scholar
  22. 22.
    Tiryakioğlu M, Campbell J (2009) Mater Sci Technol 25:784–789CrossRefGoogle Scholar
  23. 23.
    Tiryakioğlu M, Staley JT, Campbell J (2008) Mater Sci Eng A 487:383–387CrossRefGoogle Scholar
  24. 24.
    Tiryakioǧlu M, Campbell J, Staley JT (2003) Scripta Mater 49:873–878CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Nelson Netto
    • 1
  • Murat Tiryakioğlu
    • 3
    Email author
  • Paul D. Eason
    • 1
  • Boğaçhan Őndeş
    • 1
  • Eray Erzi
    • 2
  1. 1.School of EngineeringUniversity of North FloridaJacksonvilleUSA
  2. 2.Metallurgical and Materials Engineering DepartmentIstanbul University-CerrahpaşaIstanbulTurkey
  3. 3.University of North FloridaJacksonvilleUSA

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