Microstructure development and mechanical performance of Al2CrFeMnTi light-weight high entropy alloy
| Autor: | Rifat Yilmaz, Amir Motallebzadeh, Hassan Ghadbeigi, Feng Yu, Armin Asghari Alamdari, Hadi Jahangiri, Samira Mohagheghi, Kübra Gürcan Bayrak, Erhan Ayas |
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| Přispěvatelé: | İstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Makine Mühendisliği Bölümü, Mohagheghi, Samira |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Mechanical Engineering High entropy alloys Alloy Metals and Alloys Intermetallic General Chemistry Strain hardening exponent Nanoindentation engineering.material Laves phase Microstructure High Entropy Alloys Mechanics of Materials Materials Chemistry engineering Mechanical Properties Composite material Solid solution |
| ISSN: | 0966-9795 |
| Popis: | 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. 2-s2.0-85116405455 WOS:000706172400003 Q1 |
| Databáze: | OpenAIRE |
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