Order-disorder transition and its mechanical effects in lightweight AlCrTiV high entropy alloys. (15th March 2022)

• Record Type: Journal Article
• Authors: Huang, Xuejun; Miao, Jiashi; Luo, Alan A.
• Is Part Of: Scripta materialia. Number 210(2022)
• Publication Date: 2022-03-15
• Subjects: Order-disorder phenomena -- CALPHAD -- Ductility -- Differential scanning calorimetry (DSC) -- High entropy alloys; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2021.114462
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: This paper investigated an important order-disorder transition in lightweight AlCrTiV high entropy alloy system using CALculation of Phase Diagram (CALPHAD) modeling, differential scanning calorimetry (DSC) measurement, transmission electron microscopy (TEM) characterization and mechanical testing. It is found that increasing Ti content in AlCrTiV alloys can lower the order-disorder transition temperature, reduce ordering and introduces ductility to the alloys. The new Al10 Cr10 Ti70 V10 alloy shows a measurable tensile elongation (1.1%) and excellent strengths (877 MPa yield strength and 889 MPa ultimate tensile strength), promising lightweight applications. Graphical abstract: Image, graphical abstract