ETIAL 180 ALÜMİNYUM ALAŞIMINA İLAVE EDİLEN Mg ve Sn ELEMENTLERİNİN İNTERMETALİK FAZLARA ETKİSİ - THE INFLUENCE OF Sn AND Mg CONTENTS ON THE INTERMETALLIC PHASES OF ETIAL 180 ALLOY

Year 2013, Volume: 9 Issue: 2, 17 - 24, 06.01.2015

Mustafa Başaranel Nurşen Saklakoğlu Simge Gençalp İrizalp

Abstract

ETIAL 180 ALÜMİNYUM ALAŞIMINA İLAVE EDİLEN Mg ve Sn ELEMENTLERİNİN İNTERMETALİK FAZLARA ETKİSİ

Al-Si-Cu döküm alaşımlarının yapısal özellikleri α-Al fazı ve intermetaliklere bağlıdır. Bu çalışmada, özellikle otomotiv endüstrisinde yaygın olarak kullanılan ETIAL 180 alüminyum alaşımı kullanılmıştır. ETIAL 180 alüminyum alaşımına ağırlıkça % 0.2-0.4-0.6 Sn ve ağırlıkça % 0.4-0.6-0.7 Mg ilavesinin etkileri araştırılmıştır. Oluşan intermetalik yapıları incelemek üzere SEM kullanılarak EDS analizi yapılmış ve bölgesel haritalama yapılarak ilave edilen elementlerin etkileri detaylı olarak incelenmiştir. İntermetalik bileşiklerin Sn ilavesi ile kabalaştığı ve intermetalik fazda merkez ve kenar bölgesindeki değişimlerin segregasyondan dolayı oluştuğu gözlemlenmiştir. Mg ilavesinin artmasıyla ile mikro yapıdaki Mg₂Sifazı artmaktadır.

THE INFLUENCE OF Sn AND Mg CONTENTS ON THE INTERMETALLIC PHASES OF ETIAL 180 ALLOY

: Structural properties of Al-Si-Cu cast alloys depend on α-Al phase and intermetallics. Commercial ETIAL 180 aluminum alloy was used in this study. ETIAL 180 alloy with addition of 0.2-0.4- 0.6% Sn and 0.4-0.6-0.7% Mg was investigated. Primary phase and intermetallics was examined in detail by analyzing SEM and mapping. It was observed that the intermetallic compounds were coarse with Sn and the variations in region of centre and edge of intermetallic phase formed due to segregation. Mg addition increased the Mg2Si phase in microstructure.

 

 

Keywords

ETİAL 180 alaşımı, Al-Si-Cu alaşımları, SEM

References

• Metals Handbook (1988). Casting, ASM, Ninth Edition, Volume 15.
• Terjesen, G., (2003). Effect of elevated temperature on tensile properties and fracture toughness of an AlSi10Mg alloy, Aluminium, 79, 9, 748-754.
• Shah, B.K., Kumar S.D. ve Dwivedi D.K., (2003). Aging temperature and abrasive wear behaviour of cast Al–(4%, 12%, 20%)Si–0.3% Mg alloys, Materials and Design, 28, 6, 1968-1974.
• Esmaeili S., Lloyd D.J. ve Poole W.J., (2003). Modeling of precipitation hardening for the naturally aged Al-Mg-Si-Cu alloy AA6111, Acta Materialia, 51, 12, 3467-3481.
• Esmaeili S. ve Lloyd D.J., (2005). Modeling of precipitation hardening in pre-aged AlMgSi(Cu) alloys, Acta Materialia, 53, 20, 5257-5271.
• Wang Q.G. ve Davidson C.J., (2001). Solidification and precipitation behaviour of Al-Si-Mg casting alloys, Journal of Materials Science, 36, 3, 739-750.
• Tavitas-Medrano F.J., Gruzleski J.E., Samuel F.H., Valtierra S. ve Doty H.W., (2008). Effect of Mg and Sr-modification on the mechanical properties of 319-type aluminum cast alloys subjected to artificial aging, Materials Science and Engineering A, 480, 1-2, 356-364.
• Hwang J.Y., Doty H.W. ve Kaufman M.J., (2008). The effects of Mn additions on the microstructure and mechanical properties of Al–Si–Cu casting alloys, Materials Science and Engineering A, 488, 1-2, 496-504.
• Mirković D., Gröbner J. ve Schmid-Fetzer R., “Liquid demixing and microstructure formation in ternary Al–Sn–Cu alloys” ScienceDirect, http://www.sciencedirect.com/science/article/pii/S0921509307017728 (20.10.2012).
• Grażyna Mrówka-Nowotnik G., “ntermetallic Phases Examination in Cast AlSi5Cu1Mg and AlCu4Ni2Mg2 Aluminium Alloys in As-Cast and T6 Condition ” Intech, http://cdn.intechopen.com/pdfs/24032/InTech-Intermetallic_phases_examination_in_cast_alsi5cu1mg_and_alcu4ni2mg2_aluminium_alloys_in_as_cast_and_t6_condition.pdf (22.10.2012)
• Kotadia H.R., Das A., Doernberg E. ve Schmid-Fetzer R., “A comparative study of ternary Al–Sn–Cu immiscible alloys prepared by conventional casting and casting under high-intensity ultrasonic irradiation” ScienceDirect, http://www.sciencedirect.com/science/article/pii/S0254058411007802 (11.10.2013).
• Taghaddos E, Hejazi MM, Taghiabadi R, Shabestari SG. Effect of iron-intermetallics on the fluidity of 413 Aluminum alloy. J Alloys and Compounds;468(1-2);539-5 (2009).
• Warmuzek M, Sieniawski J, Wicher K, Mrówka-Nowotnik G. The study of distribution of the transition metals and Si during primary precipitation of the intermetallic phases in Al-Mn-Si alloys. J Mater Process Technol;175(1-3):421-6 (2006).
• Liu YL, Kang SB, Kim HW. The complex microstructures in as-cast Al-Mg-Si alloy. Mater Lett;41:267-72 (1999).
• Mrówka - Nowotnik G, Sieniawski J, Wierzbińska M. Analysis of intermetallic particles in AlSi1MgMn aluminium alloy. J Ach Mater and Manufac Eng:20(1-2);155-8 (2007).
• Seifeddine S, Johansson S, Svensson I. The influence of cooling rate and manganese content on the β-Al5FeSi phase formation and mechanical properties of Al–Si-based alloys. Mater Sci Eng:A 490(1-2):385-90 (2008).
• Warmuzek M, Rabczak K, Sieniawski J. The course of the peritectic transformation in the Al-rich Al–Fe–Mn–Si alloys. J Mater Process Technol;162-163:422-8 (2005).
• Ashtari P., Tezuka H. ve Sato T., “Influence of Sr and Mn Additions on Intermetallic Compound Morphologiesin Al-Si-Cu-Fe Cast Alloys” The Japan Institute of Light Metal, http://www.jim.or.jp/journal/e/pdf3/44/12/2611.pdf(08.09.2011)
• Mehdı Hosseınıfar M. ve Malakhov D.V., “The Sequence of Intermetallics Formation during the Solidification of an Al-Mg-Si Alloy Containing La” The Minerals, Metals & Materials Society and ASM International http://materials.mcmaster.ca/faculty/malakhov/Publications/2011%20Hosseinifar%20Malakhov.pdf (29.06.2012)
• Liu SF, Li B, Wang XH, Su W, Han H. Refinement effect of cerium, calcium and strontium in AZ91 magnesium alloy. J Mater Process Technol:209(8):3999-4004 (2009).
• Cizek L, Hanus A, Sozanska M, Tanski T, Pawlica L. Structure characteristics of magnesium alloys with admixture of Aluminium, Silicon and Zirconium. Acta Metallurgica Slovaca:13:531-8 (2007).
• Açıkgöz Ş, Şevik H, Kurnaz, SC. Influence of silver addition on the microstructure and mechanical properties of squeeze cast Mg–6Al–1Sn–0.3Mn–0.3Ti. J Alloys Compd:509 (27):7368-72 (2011).
• Sun Y. ve Ahlatci H., Mechanical and wear behaviors of Al-12Si-XMg composites reinforced with in situ Mg2Si particles, Materals and Design, 32, 5, 2983-2987 (2011).