Microstructural Evolution of γ'-Ni3Al Precipitates Affecting Mechanical Properties of Nickel- based Superalloys

---

Atıf İçin Kopyala

Eriş R., Akdeniz M. V., Mekhrabov A.

TMS 2020 Annual Meeting & Exhibition, California, Amerika Birleşik Devletleri, 23 - 27 Şubat 2020, ss.324

• Yayın Türü: Bildiri / Özet Bildiri
• Basıldığı Şehir: California
• Basıldığı Ülke: Amerika Birleşik Devletleri
• Sayfa Sayıları: ss.324
• Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Nickel-based superalloys are exceptional materials due to their novel two phase (γ-γ^') microstructures. In this study, the effects of ternary alloying X element additions and heat treatment procedures on the microstructural evolution of γ^'-Ni₃Al precipitates and mechanical properties of Ni₈₀Al₁₅X₅ alloy systems (i.e. X = Cr, Co, Nb or Ti) will be presented. Furthermore, the results of the experimental studies will be supported by modelling and theoretical first-principles calculations via charge density difference (CDD), electron localization function (ELF) and density of states (DOS) simulations which demonstrate site preferences and bonding characteristics of alloying X element atoms with their next neighbour atoms.