AZ Serisi Döküm Magnezyum Alaşımlarının Termal Özellikleri

Öz

Bu çalışmada, AZ serisi döküm magnezyum alaşımlarının ısıl davranışları (ısıl yayılma ve ısıl iletkenlik) üzerine deneysel bir araştırma sunmaktadır. Deneyde kullanılan alaşım bileşenlerinden Al’nin değişimi (ağırlıkça % 1-9 arasında) alaşımların ısıl yayılma ve ısıl iletkenliklerini nasıl etkilediğini, yoğunluk ve sertlik üzerindeki değişimler incelenmiştir. Alaşımların mikroyapı değişimlerinin ve mikroyapıda görülen intermetalik fazın (Mg17Al12) alaşımların ısıl yayınım, ısıl iletkenlik, yoğunluk ve sertlik üzerine etkisi olduğu görülmüştür. Alaşımın ısıl özellikleri, alaşımdaki Al içeriğine bağlı olarak değişmiştir. Alaşımların termal özellikleri sıcaklık artışına bağlı olarak (sıcaklık değişimi 25 °C- 400 °C arası) artmıştır. En yüksek termal yayılma AZ61 alaşımında gözlenmiştir.

Anahtar Kelimeler

• AZ Serisi Magnezyum Alaşımları
• Termal Yayılma
• Termal İletkenlik
• Yoğunluk
• Sertlik

Thermal properties of AZ series cast Magnesium alloys

Öz

In this study, an experimental research on the thermal behavior (thermal diffusion and thermal conductivity) of cast magnesium alloys of the AZ series is presented. How the variation of Al, one of the alloy components used in the experiment, affects the thermal expansion and thermal conductivity of the alloys (1-9 Al % weight), and the changes on density and hardness were investigated. It has been observed that the microstructure changes of the alloys and the intermetallic phase (Mg17Al12) seen in the microstructure have an effect on the thermal diffusivity, thermal conductivity, density, and hardness of the alloys. The thermal properties of the alloy changed depending on the Al content in the alloy. The thermal properties of the alloys increased depending on the temperature increase (temperature change between 25 °C and 400 °C). The highest thermal dissipation was observed in AZ61 alloy.

Anahtar Kelimeler

• AZ Series Magnesium Alloys
• Thermal Diffusivity
• Thermal Conductivity
• Density
• Hardness

Kaynakça

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