Journal article
A lightweight single-phase AITiVCr compositionally complex alloy
Acta materialia, v 123, pp 115-124
15 Jan 2017
Abstract
A lightweight (5.06 g cm(-3)) AlTiVCr compositionally complex alloy consisting of four elements is presented. Interest in the system is due to its microstructural uniformity and the use of commodity elements. The focus of the present work was to highlight the systematic microstructural and chemical characterization - and the information gained by application of various physical and modeling techniques in concert - in the context of complete characterization of compositionally complex alloys. Herein, analysis of as-cast AITiVCr was investigated via conventional and scanning transmission electron microscopy, revealing a simple, single-phase microstructure. Characterization was supported by atom probe tomography and X-ray diffraction, whilst first-principles calculations based on density functional theory (DFT) were employed to calculate the thermodynamic and structural properties of the AITiVCr alloy. The study was able to reveal the unique atomic locations in the alloy, whilst revealing that the B2 phase has a lower formation enthalpy (-9.30 kJ/mol atom) and is more stable than the disordered BCC phase (-1.25 kJ/mol atom) at low temperatures. The study herein provides insight into the combined analysis methods as relevant to the study of compositionally complex and high entropy alloys, indicating means of unambiguous characterization employing generalized multicomponent short range order analysis. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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Details
- Title
- A lightweight single-phase AITiVCr compositionally complex alloy
- Creators
- Y. Qiu - Monash UniversityY. J. Hu - Pennsylvania State UniversityA. Taylor - Deakin UniversityM. J. Styles - CSIRO ManufacturingR. K. W. Marceau - Deakin UniversityA. V. Ceguerra - University of SydneyM. A. Gibson - Monash UniversityZ. K. Liu - Pennsylvania State UniversityH. L. Fraser - Monash UniversityN. Birbilis - Monash University
- Publication Details
- Acta materialia, v 123, pp 115-124
- Publisher
- Elsevier
- Number of pages
- 10
- Grant note
- Deakin Advanced Characterization Facility ACI-1053575 / National Science Foundation; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000389556500011
- Scopus ID
- 2-s2.0-84992593379
- Other Identifier
- 991021931902604721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Metallurgy & Metallurgical Engineering