Microstructural and Mechanical Characterization of Al-0.80Mg-0.85Si-0.3Zr Alloy

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Kahrıman F., Zeren M.

ARCHIVES OF FOUNDRY ENGINEERING, cilt.17, sa.4, ss.73-78, 2017 (ESCI) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 17 Sayı: 4
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1515/afe-2017-0133
  • Dergi Adı: ARCHIVES OF FOUNDRY ENGINEERING
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
  • Sayfa Sayıları: ss.73-78
  • Anahtar Kelimeler: Solidification process, Heat treatment, Metallography, Microstructure, Mechanical properties, MG-SI ALLOY, SEVERE PLASTIC-DEFORMATION, PRECIPITATION SEQUENCE, ALUMINUM-ALLOYS, ZR, BEHAVIOR, KINETICS, TEM, SC
  • Kocaeli Üniversitesi Adresli: Evet

Özet

In this study, Al-0.80Mg-0.85Si alloy was modified with the addition of 0.3 wt-% zirconium and the variation of microstructural features and mechanical properties were investigated. In order to produce the billets, vertical direct chill casting method was used and billets were homogenized at 580 degrees C for 6 h. Homogenized billets were subjected to aging practice following three stages: (i) solution annealing at 550 degrees C for 3 h, (ii) quenching in water, (iii) aging at 180 degrees C between 0 and 20 h. The hardness measurements were performed for the alloys following the aging process. It was observed that peak hardness value of Al-0.80Mg-0.85Si alloy increased with the addition of zirconium. This finding was very useful to obtain aging parameters for the extruded hollow profiles which are commonly used in automotive industry. Standard tensile tests were applied to aged profiles at room temperature and the results showed that modified alloy had higher mechanical properties compared to the non-modified alloy.