Effect of Alloying Elements on the Electrical Resistivity of Aluminum Alloys

Robinson, A. T.; Dorn, J.E.

doi:10.1007/bf03397330

Cited by 11 publications

(5 citation statements)

References 7 publications

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“…For Al we used (w /> T)" 1 = y = 0.0035 and 0.0030, while for the alloy, y ranges from 0.0062 to 0.008, the former value being that expected from the dc conductivity. 19 It is clear that the main peak in Al seems structure free except for possible slope changes at 1.40 and 1.65 eV (better detected on plots with different scales). A recent set of measurements 8 by an ac technique 20 reports structure on the lowenergy side of the 1.6-eV peak, structure large enough to be discernible in our data, but which is not found.…”

mentioning

confidence: 93%

Low-Energy Optical Absorption Peak in Aluminum and Al-Mg Alloys

Bos

Lynch

1970

Phys. Rev. Lett.

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mentioning

confidence: 93%

Low-Energy Optical Absorption Peak in Aluminum and Al-Mg Alloys

Bos

Lynch

1970

Phys. Rev. Lett.

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“…Different intermetallic compounds are supposed to be formed, as the copper and the aluminium reacts each other during solidification and ageing, which results in AlCu, Al4Cu9, CuAl2, Cu4Al3, and Cu3Al2 precipitates. Among them Al4Cu9 and Cu3Al2 are the most important intermetallic phases that affect the alloy's hardness [8]. The hardness of alloys, on the other hand, diminishes when the temperature rises over 300 o C. Segregation to dislocations and precipitation coarsening were the causes of this hardening phenomenon.…”

Section: Ageing Behavior Of the Cold Rolled Alloys: 321 Isochronal Ag...mentioning

confidence: 99%

Effect of Sc and Zr on Precipitation Behaviour of Wrought Al- Bronze

Haque

Khan

Kaiser

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Aluminium bronze doped with Sc and Zr were prepared by casting followed by cold-rolling with varied degrees of deformation. Then, the cold-rolled samples were aged for one hour at various temperatures, isochronally up to 500°C and isothermally at 300°C and 350°C up to four hours respectively. To better understand the precipitation behavior of Al-bronze with Sc and Zr additions, microhardness and electrical resistivity of aged alloys were investigated. The formation of copper aluminates precipitate resulted in a significant hardening improvement in aged alloys particularly at 300 °C. The addition of both Sc and Zr improved the thermal stability of the aged alloys by forming Al3Sc and Al3Zr precipitates. Sc, on the other hand, had proven to be more effective at improving aging behaviour of Al-bronze alloy. Electrical resistivity was also observed to increase with increasing aging temperature, then decrease slowly due to the production of fine precipitates and coarsening of this precipitate by over ageing, respectively. The DSC investigation supported the precipitation response by demonstrating the varied peaks of the heating curve at various temperatures. The reflectance spectroscopy study revealed that the addition of Sc and Zr exhibited greater optical response owing to grain refinement. Optical microscopy of cold rolled samples exhibited multiple phases of elongated grain along the rolling direction, and Sc and Zr additions were capable of refining alloy grains by precipitation of primary Al3Sc and Al3Zr particles formed as heterogeneous nuclei during solidification. In the meantime, recrystallization and grain growth development were induced in Al-bronze by ageing at 500°C for an hour. During ageing treatment, the production of secondary Al3Sc and Al3Zr precipitates efficiently inhibited the mobility of dislocation and sub-grain boundaries, preventing the Sc and Zr doped alloys from recrystallization.

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“…Tablo 10'da 1050 -H0 alaşımlı 2,20 mm kalınlığındaki ayrı numunelerin farklı tavlama sıcaklıkları (4 saat) sıcaklıkları ve elektriksel iletkenlik (mS/m) sonuçları verilmiştir. Tablo 8 ve Tablo 9'daki gibi elektriksel iletkenliğin sıcaklık parametresinin yanında Tablo 3'deki spektrometre analiz sonucundaki alaşım değerlerininde etki edebileceği düşünülmektedir (Robinson and Dorn, 1951;Xu vd., 2018;Cengiz, 2018). Yapılan deneyler sonucu 1050-H0 alaşımlarının döküm içerisindeki mangan oranı % 0,10, Tibor (AlTi5B1) oranın ise % 0,13'den büyük olduğunda levhanın elektriksel iletkenliğini olumsuz yönde etkilediği gözlemlenmiştir (Cengiz, 2018).…”

Section: Alaşımlı Malzemelerin Mekanik öZellikleri (Mechanical Properties Of 1050 Alloy Materials)unclassified

The Influence of Process Parameters on Properties in 1xxx Series Aluminum Sheet Production by Twin Roller Method

Aydın¹,

Gören²,

Cengiz³

2020

Mühendislik Bilimleri Ve Tasarım Dergisi

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Bu çalışmada ikiz merdaneli sürekli döküm tekniği ile üretilen 1xxx alaşımlarının alüminyum levha üretimi gerçekleştirilmiştir. 1xxx alaşımları ile üretilen alüminyum levhaların günümüz teknolojisinde üretimdeki proses parametreleri ve söz konusu parametrelerin nihai ürünlerin mekanik özellikleri ve elektriksel iletkenliği üzerinde etkilerinin neler olduğu araştırılmıştır. Çalışmada 1050 alaşımlı levha üretimi için 1310 mm genişliğinde, 5.50 mm kalınlığında sürekli döküm yöntemi tekniği kullanılarak levha üretimi gerçekleştirilmiştir. Döküm denemeleri TS EN 573-3 standardına göre yapılmıştır. Mekanik özelliklerin tespiti Zwick Z050 markalı çekme test cihazı kullanılarak gerçekleştirilmiştir. Döküm içerisindeki alaşım elementlerinin (Si, Mn ve Ti) elektriksel iletkenliğe etkilerinin yanında soğuk haddeleme sonrasında, nihai tav denemeleri uygulanarak iletkenlikleri ölçülmüştür.

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Effect of Alloying Elements on the Electrical Resistivity of Aluminum Alloys

Cited by 11 publications

References 7 publications

Low-Energy Optical Absorption Peak in Aluminum and Al-Mg Alloys

Low-Energy Optical Absorption Peak in Aluminum and Al-Mg Alloys

Effect of Sc and Zr on Precipitation Behaviour of Wrought Al- Bronze

The Influence of Process Parameters on Properties in 1xxx Series Aluminum Sheet Production by Twin Roller Method

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