Measurements of electrical and thermal properties with growth rate, alloying elements and temperature in the Al–Si–X alloys

Aker, Aynur; Kaya, Hasan

doi:10.1080/13640461.2017.1307623

Cited by 4 publications

(8 citation statements)

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“…After stabilizing the thermal conditions, the samples were grown at a constant G (8.50 K mm −1 ) with different V from 8.28 µm s −1 to 167.08 µm s −1 (for each alloy) by using different speed synchronous motors (1, 2, 5, 10, and 20 rpm). The details of the experimental procedure are given in the previous works [26,27].…”

Section: Materials Preparationmentioning

confidence: 99%

“…The lamellar spacings (λ) were measured from the SEM photos of solidification structures taken from both longitudinal and transverse sections of the specimens with the intersection method [26] and obtained the average λ values for each sample (Fig. 2).…”

Section: Materials Preparationmentioning

confidence: 99%

“…Thus, the microstructures play a crucial role in the physical properties (mechanical and electrical) of metallic alloys. The effects of applied solidification parameters on physical properties have been studied intensively [8,10,12,15,[26][27][28][29][30][31][32][33][34][35][36]. Experimental researches show that the solidification condition and AE strengthen the alloy through refined grains and improve the mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

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Influence of solidification rate and alloying elements on structure, mechanical and electrical properties of Al-Cu-X alloys

Kalkanoglu¹,

Kaya²,

Büyük³

et al. 2021

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Section: Materials Preparationmentioning

confidence: 99%

Section: Materials Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of solidification rate and alloying elements on structure, mechanical and electrical properties of Al-Cu-X alloys

Kalkanoglu¹,

Kaya²,

Büyük³

et al. 2021

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“…Al-Cu-x alaşımlarının sıcaklığa bağlı değişimi Yapılan benzer çalışmalarda, Al-Si ötektiğine aynı oranlarda katıkılanarak elde edilen Al-Si-x (x=Cu, Co, Ni, Bi, Sb) (ağ.) alaşımlarının elektriksel özdirenç değerlerinin sıcaklığın artışı ile arttığı görülmüştür [10,49]. Al alaşımı farklı oranlarda (%3, 6, 15, 24, 33(ağ.))…”

Section: Katkılama Elementlerinin çEkme-dayanımına Etkisiunclassified

Al-Cu ÖTEKTİK ALAŞIMINA Ag, Zn VE Sn KATKILANMASININ MEKANİK VE ELEKTRİKSEL ÖZELLİKLERE ETKİSİNİN ARAŞTIRILMASI

Aker

Nair²,

Yildirim³

et al. 2019

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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ÖZBu çalışmada, Al-Cu ötektik alaşımına %2 (ağ.) oranında Ag, Sn ve Zn metalleri katkılanarak elde edilen Al-%33Cu-%2x [x=Ag, x=Sn, x=Zn] (ağ.) alaşım sistemlerinin mikroyapı, mekanik ve elektriksel özellikleri araştırılmıştır. Bu amaçla üçlü alaşımlar, belirlenen oranlardaki metallerin vakum ortamında eritilmesinden sonra, eriyik haldeki sıvı alaşımların döküm fırınındaki grafit potalara doldurularak hazırlanmıştır. Döküm halindeki alaşımların, mikroyapı fotoğrafları taramalı elektron mikroskobu (SEM) yardımıyla çekilmiştir. Çekilen bu fotoğraflardan, katkı elementlerinin mikroyapılara olan etkileri araştırılmıştır. Al-%33Cu-%2x alaşımlarının kimyasal bileşim analizi EDX ile yapılmıştır. Döküm halindeki Al-%33Cu-%2x [x=Ag, x=Sn, x=Zn] (ağ.) alaşımları için mikrosertlik (HV) değerleri sırasıyla 184,6 kg/mm 2 , 144,2 kg/mm 2 ve 136 kg/mm 2 , çekme dayanımı () değerleri 92 MPa, 72,7 MPa ve 53,7 MPa, elektriksel özdirenç () değerleri ise 2,13x10 -8 Ω, x10 -8 Ω vex10 -8 Ω olarak ölçülmüştür. Katkılama elementlerinin Al-Cu ötektiğinin mekanik ve elektriksel özelliklerini etkilediği görülmüştür. Bu çalışmada bulunan deneysel sonuçlar, literatürdeki benzer çalışmaların sonuçları ile karşılaştırılmıştır. ABSTRACTIn this research, effect of alloying elements in ratio of wt.%2 Ag, Sn and Zn on microstructure, microhardness, tensile strength and electrical resistivity of the Al-Cu eutectic alloy have been investigated. For this purpose, after ternary alloys of metals at specified ratio melted in vacuum atmosphere, liquid molten alloy was filled in prepared graphite crucible in the casting furnace. Microstructures of the casting samples were photographed by using an optical light microscopy and scanning electron microcopy (SEM). From taken photographs, the effects of the alloying elements on microstructures were investigated. The chemical composition analysis of the Al-%33Cu-%2x alloys were characterized by SEM equipped with an energy dispersive X-ray (EDX) spectrometer. The experimental values of Al-%33Cu-%2x [x=Ag, Sn, ve Zn] alloys were measured as 184.6, 144.2 and 136 kg/mm 2

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“…X in Al-Si-X formation represents one or more alloying elements, such as copper (Cu), magnesium (Mg), nickel (Ni), iron (Fe), etc. Large quantities of aluminium (Al) alloys (Al-Si-X) are required in engineering applications, especially in automotive and airspace industries [1][2][3][4]. The mean aluminium consumption in automobiles in Europe is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Intermetallics Formation and Their Effect on Mechanical Properties of Al-Si-X Alloys

Ebhota¹,

Jen²

2018

Intermetallic Compounds - Formation and Applications

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This study focuses on primary impurities, called intermetallics, in the microstructure of Al-SiX alloys, their formation, effects and treatments to eliminate or ameliorate their deleterious effects. Intermetallic compounds are usually formed when alloying elements, such as Fe, Cu, Mn, Mg and Sr. are added to Al-Si based alloys. These elements are depicted by X in the alloys formation expression. The chapter noted that the most common intermetallics are iron (Fe) based, and several of these Fe-phases, including the most harmful Fe-phase, β-Al 5 SiFe, are listed and discussed. Fe-phase intermetallics are deleterious to the mechanical properties of Al-alloys; however, addition of <0.7% Fe helps prevent soldering in die casting mould. The effects of Fe-phase and other intermetallics formed by Cu, Mg and Mn were examined. Further, some techniques of eliminating or mitigating the negative influences of intermetallics were discussed.

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Measurements of electrical and thermal properties with growth rate, alloying elements and temperature in the Al–Si–X alloys

Cited by 4 publications

References 20 publications

Influence of solidification rate and alloying elements on structure, mechanical and electrical properties of Al-Cu-X alloys

Influence of solidification rate and alloying elements on structure, mechanical and electrical properties of Al-Cu-X alloys

Al-Cu ÖTEKTİK ALAŞIMINA Ag, Zn VE Sn KATKILANMASININ MEKANİK VE ELEKTRİKSEL ÖZELLİKLERE ETKİSİNİN ARAŞTIRILMASI

Intermetallics Formation and Their Effect on Mechanical Properties of Al-Si-X Alloys

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