The Physical Properties Of Aluminium-7xxx Series Alloys Produced By Powder Metallurgy Method


ACAR A. N. , EKŞİ A. K. , EKİCİBİL A.

JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI, cilt.21, ss.341-350, 2018 (ESCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 21 Konu: 2
  • Basım Tarihi: 2018
  • Doi Numarası: 10.2339/politeknik.389588
  • Dergi Adı: JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI
  • Sayfa Sayısı: ss.341-350

Özet

Alumix-431 materials were prepared by cold and warm compaction method applying 350-400 MPa pressures at RT (room temperature) 50 and 80 degrees C temperatures. The density measurements of materials were performed; the thermoelectric properties of materials were investigated at 5-300K under the He atmosphere, and the relationship between the measurements and sample properties was examined. The measurements of thermoelectric properties showed that maximum resistivity [Alumix -431-1] and thermal conductivity [Alumix -431-6] values were obtained 0.161 Omega m and 24.31W/ Km, respectively at 285-295K temperature ranges and minimum electrical resistivity and thermal conductivity values were obtained on Alumix-431-6 and Alumix-431-1 samples, respectively. It was observed that Seebeck coefficient values varied mostly from negative sign to positive sign indicated dominate from carriers. The maximum Figure of merit value was determined as 18.71x10(-2); on the Alumix-431-5 alloy at 96.904K