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Article Details

  • Article Code : FIRAT-AKADEMI-9221-5733
  • Article Type : Araştırma Makalesi
  • Publication Number : 2A0204
  • Page Number : 45-52
  • Doi : 10.12739/NWSA.2025.20.2.2A0204
  • Abstract Reading : 12
  • Download : 4
  • Atıf Sayısı : 0
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Issue Details

  • Year : 2025
  • Volume : 20
  • Issue : 2
  • Number of Articles Published : 4
  • Published Date : 1.04.2025

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Dergi Kapağı
Technological Applied Sciences

Serial Number : 2A
ISSN No. : 1308-7223
Release Interval (in a Year) : 4 Issues

TOZ METALURJİSİ YÖNTEMİ İLE YÜKSEK ENTROPİLİ ALAŞIMIN ÜRETİMİ VE KARAKTERİZASYONU

Hadi BİLİR1 , Mehmet Akkaş2 , Can Doğan VURDU3

Bu çalışmada, yüksek entropili alaşımlar (YEA) sınıfında yer alan CrMnFeCoNi (Cantor alaşımı) esaslı sistem, %5 Al ilavesiyle modifiye edilerek kompozit formda yeni bir alaşım geliştirilmiştir. YEA’lar, çok bileşenli yapıları sayesinde üstün mekanik ve yapısal özelliklere sahiptir. Al katkısının, yeni faz oluşumlarını tetikleyerek çökelme ve dispersiyon sertleşmesi gibi mekanizmaları devreye sokması beklenmiştir. Alaşım üretiminde, elemental tozlar yüksek enerjili bilyalı değirmen (HEBM) ile mekanik alaşımlama yoluyla homojen şekilde karıştırılmıştır. Elde edilen toz karışımları, 600 MPa basınç altında tek eksenli soğuk presleme ile kompakt hale getirilmiş, ardından 1000?°C’de atmosfer kontrollü sinterleme uygulanmıştır. Bu süreçle katı faz difüzyon mekanizmaları aktive edilerek, partiküller arası bağ oluşumu ve faz dönüşümleri sağlanmıştır. Mikroyapısal karakterizasyon SEM ile yapılmış; Al katkısının faz dağılımı, gözeneklilik ve partikül yapısı üzerinde belirgin etkiler yarattığı gözlemlenmiştir. Al ilavesi, bazı bölgelerde ikinci faz oluşumlarına, gözenek oranı değişimlerine ve heterojen partikül boyut dağılımına neden olmuştur. Sonuçlar, %5 Al katkısının CrMnFeCoNi matrisinde mikroyapısal kararlılığı ve mekanik performansı doğrudan etkilediğini göstermektedir.

Keywords
Yüksek Entropili Alaşım, Sinterleme, Mekanik Alaşımlama, Takviye Elementler, Elementler,

PRODUCTION AND CHARACTERIZATION OF HIGH ENTROPY ALLOY BY POWDER METALLURGY METHOD

Hadi BİLİR1 , Mehmet Akkaş2 , Can Doğan VURDU3

In this study, a novel composite alloy was developed by modifying the CrMnFeCoNi-based system—classified as a high-entropy alloy (HEA) and commonly referred to as the Cantor alloy—through the addition of 5 wt.% aluminum (Al). HEAs exhibit superior mechanical and structural properties due to their multi-component nature. The addition of Al is expected to promote the formation. For the alloy production, elemental powders were homogenized via mechanical alloying using a high-energy ball milling (HEBM) process. The resulting powder mixtures were then compacted through uniaxial cold pressing under a pressure of 600 MPa, followed by sintering at 1000°C in a controlled atmosphere. This process activated solid-state diffusion mechanisms, enabling interparticle bonding and phase transformations. Microstructural characterization was conducted using scanning electron microscopy (SEM). The analysis revealed that Al addition significantly influenced phase distribution, porosity, and particle morphology. Specifically, the presence of Al led to the formation of secondary phases in certain regions, variations in porosity, and heterogeneity in particle size distribution. Overall, the findings demonstrate that the incorporation of 5 wt.% Al has a direct effect on the microstructural stability and mechanical performance of the CrMnFeCoNi matrix.

Keywords
High Entropy Alloy, Sintering, Mechanical Alloying, Reinforcing Elements, Elements,

Details
   

Authors

Hadi BİLİR (1)

hadibilir@gmail.com | 0000-0002-6293-4138

Mehmet Akkaş (2) (Corresponding Author)
Kastamonu University
mehmetakkas45@gmail.com | 0000-0002-0359-4743

Can Doğan VURDU (3)

cvurdu@kastamonu.edu.tr | 0000-0002-5179-1266

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References
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