Effect of mechanical alloying and preheating treatment on the phase transformation of the Al–Cu–Fe compacts annealed by microwave radiation

Journal of Materials Research and Technology

Touradj Ebadzadeh¹  Asghar Kazemzadeh¹  Zahra Karimi²  Ehsan Marzbanrad²  Vahid Aghaali³ 

[1]Corresponding author.

[2]Materials and Energy Research Center, Imam Khomeini Blv., Meshkindasht, P.O.Box 31787-316, Karaj, Iran

[3]School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Narmak, 16844, Tehran, Iran

关键词: Mechanical alloying;    Microwave radiation;    Quasi-crystal;    X-ray diffraction;    Annealing process;   

DOI  :  

来源: DOAJ

【 摘 要 】

The present study investigated the effect of mechanical alloying (MA) time, preheating and annealing process on phase and microstructural transformations in Al65Cu23Fe12 (at%) alloys. To release stresses, a part of milled powder was heated at 150 °C for 20 min and then raw compacts of the as-synthesized powders and preheated ones were prepared and heated at selected temperatures from 200 to 800 °C using microwave radiation. The results showed that with increasing the time of mechanical alloying process, the morphology of the particles changed and nanometer spherical particles were formed. Also, β-Al(Cu,Fe) solid solution phase was formed after 16 h of mechanical alloying. After 30 h of mechanical alloying, the quasi-crystalline phase did not form directly under the conditions employed in this work. Comparison of preheated samples with samples without preheating process showed that the quasi-crystal phase was formed at 300 °C for preheated samples, while the β phase was formed for samples without preheating process. The results of phase analysis also showed that β-Al(Cu,Fe) and θ-Al2Cu phases along with the quasi-crystalline phase are the main phases in the samples. The annealing process of the samples using microwave radiation leads to the formation of a quasi-crystal phase at temperatures and times much lower than other annealing methods.

【 授权许可】

Unknown