Microstructure development and mechanical performance of Al2CrFeMnTi light-weight high entropy alloy
Yükleniyor...
Dosyalar
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Light-weight high entropy alloys (LWHEAs) are considered equiatomic or near-equiatomic alloys consisting of at least five elements. Low-density elements, like Al and Ti, are the key constituents in designing these alloys so that features such as reduced overall density and improved mechanical properties are achieved. A new LWHEAs (Al2CrFeMnTi) is designed, where mechanical alloying followed by subsequent casting is carried out for a successful synthesis. As a result, chemically homogenous samples are fabricated that possess a multiphase microstructure of BCC solid solution, C14 Laves phase, and L21 precipitates in the as-cast state. Although the presence of intermetallic phases results in high hardness characterized by nanoindentation tests, the produced alloy demonstrates some level of ductility before failure. This behavior could be linked to the minimal strain hardening of the BCC phase. Additionally, the formation of ultra-fine L21 precipitates within the BCC phase is contributed to the high strength and the modified strain observed in the alloy.
Açıklama
Anahtar Kelimeler
High Entropy Alloys, Intermetallic, Mechanical Properties, Microstructure, Nanoindentation
Kaynak
Intermetallics
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
139
Sayı
Künye
Jahangiri, H., Mohagheghi, S., Alamdari, A. A., Yilmaz, R., Bayrak, K. G., Yu, F., ... & Motallebzadeh, A. (2021). Microstructure development and mechanical performance of Al2CrFeMnTi light-weight high entropy alloy. Intermetallics, 139, 107376.
