A combinatorial assessment of AlxCrCuFeNi2 (0 < x < 1.5) complex concentrated alloys: Microstructure, microhardness, and magnetic properties

T. Borkar; B. Gwalani; D. Choudhuri; C. V. Mikler; C. J. Yannetta; X. Chen; R. V. Ramanujan; M. J. Styles; M. A. Gibson; R. Banerjee

doi:10.1016/j.actamat.2016.06.025

A combinatorial assessment of Al_xCrCuFeNi₂ (0 < x < 1.5) complex concentrated alloys: Microstructure, microhardness, and magnetic properties

T. Borkar
, B. Gwalani
, D. Choudhuri
, C. V. Mikler
, C. J. Yannetta
, X. Chen
, R. V. Ramanujan
, M. J. Styles
, M. A. Gibson
, R. Banerjee

Research output: Contribution to journal › Article › peer-review

287 Scopus citations

Abstract

This article discusses a novel combinatorial approach for assessing composition-microstructure-microhardness-magnetic property relationships, using laser deposited compositionally graded Al_xCrCuFeNi₂ (0 < x < 1.5) complex concentrated alloys as a candidate system. The composition gradient has been achieved from CrCuFeNi₂ to Al_1.5CrCuFeNi₂ over a length of ∼25 mm, deposited using the laser engineered net shaping process from a blend of elemental powders. With increasing Al content, there was a gradual change from a fcc-based microstructure (including the ordered L1₂ phase) to a bcc-based microstructure (including the ordered B2 phase), accompanied with an increase in microhardness. Interestingly, with increasing paramagnetic Al content, saturation magnetization as well as coercivity increases and reaches a maximum value when x = 1.3, indicating the tunability of magnetic properties by a paramagnetic element in this alloy system. Such graded alloys are highly attractive candidates for investigating the influence of systematic compositional changes on microstructural evolution and concurrent physical and mechanical properties in complex concentrated alloys or high entropy alloys.

Original language	English
Pages (from-to)	63-76
Number of pages	14
Journal	Acta Materialia
Volume	116
DOIs	https://doi.org/10.1016/j.actamat.2016.06.025
State	Published - Sep 1 2016

Funding

The authors would like to acknowledge the Advanced Materials and Manufacturing Processes Institute (AMMPI) and the Center for Advanced Research and Technology (CART) at the UNT for partial support for a graduate student as well as for access to advanced characterization facilities. Furthermore, part of this research has been conducted by NTU-HUJ-BGU Nanomaterials for Energy and Water Management Programme under the Campus for Research Excellence and Technological Enterprise (CREATE), that is supported by the National Research Foundation, Prime Minister’s Office, Singapore.

Keywords

Alloy design
Functional properties
High entropy alloys (HEAs)
High-throughput
Laser engineered net shaping

Access to Document

10.1016/j.actamat.2016.06.025

Cite this

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title = "A combinatorial assessment of AlxCrCuFeNi2 (0 < x < 1.5) complex concentrated alloys: Microstructure, microhardness, and magnetic properties",

abstract = "This article discusses a novel combinatorial approach for assessing composition-microstructure-microhardness-magnetic property relationships, using laser deposited compositionally graded AlxCrCuFeNi2 (0 < x < 1.5) complex concentrated alloys as a candidate system. The composition gradient has been achieved from CrCuFeNi2 to Al1.5CrCuFeNi2 over a length of ∼25 mm, deposited using the laser engineered net shaping process from a blend of elemental powders. With increasing Al content, there was a gradual change from a fcc-based microstructure (including the ordered L12 phase) to a bcc-based microstructure (including the ordered B2 phase), accompanied with an increase in microhardness. Interestingly, with increasing paramagnetic Al content, saturation magnetization as well as coercivity increases and reaches a maximum value when x = 1.3, indicating the tunability of magnetic properties by a paramagnetic element in this alloy system. Such graded alloys are highly attractive candidates for investigating the influence of systematic compositional changes on microstructural evolution and concurrent physical and mechanical properties in complex concentrated alloys or high entropy alloys.",

keywords = "Alloy design, Functional properties, High entropy alloys (HEAs), High-throughput, Laser engineered net shaping",

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AU - Gwalani, B.

AU - Choudhuri, D.

AU - Mikler, C. V.

AU - Yannetta, C. J.

AU - Chen, X.

AU - Ramanujan, R. V.

AU - Styles, M. J.

AU - Gibson, M. A.

AU - Banerjee, R.

PY - 2016/9/1

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N2 - This article discusses a novel combinatorial approach for assessing composition-microstructure-microhardness-magnetic property relationships, using laser deposited compositionally graded AlxCrCuFeNi2 (0 < x < 1.5) complex concentrated alloys as a candidate system. The composition gradient has been achieved from CrCuFeNi2 to Al1.5CrCuFeNi2 over a length of ∼25 mm, deposited using the laser engineered net shaping process from a blend of elemental powders. With increasing Al content, there was a gradual change from a fcc-based microstructure (including the ordered L12 phase) to a bcc-based microstructure (including the ordered B2 phase), accompanied with an increase in microhardness. Interestingly, with increasing paramagnetic Al content, saturation magnetization as well as coercivity increases and reaches a maximum value when x = 1.3, indicating the tunability of magnetic properties by a paramagnetic element in this alloy system. Such graded alloys are highly attractive candidates for investigating the influence of systematic compositional changes on microstructural evolution and concurrent physical and mechanical properties in complex concentrated alloys or high entropy alloys.

AB - This article discusses a novel combinatorial approach for assessing composition-microstructure-microhardness-magnetic property relationships, using laser deposited compositionally graded AlxCrCuFeNi2 (0 < x < 1.5) complex concentrated alloys as a candidate system. The composition gradient has been achieved from CrCuFeNi2 to Al1.5CrCuFeNi2 over a length of ∼25 mm, deposited using the laser engineered net shaping process from a blend of elemental powders. With increasing Al content, there was a gradual change from a fcc-based microstructure (including the ordered L12 phase) to a bcc-based microstructure (including the ordered B2 phase), accompanied with an increase in microhardness. Interestingly, with increasing paramagnetic Al content, saturation magnetization as well as coercivity increases and reaches a maximum value when x = 1.3, indicating the tunability of magnetic properties by a paramagnetic element in this alloy system. Such graded alloys are highly attractive candidates for investigating the influence of systematic compositional changes on microstructural evolution and concurrent physical and mechanical properties in complex concentrated alloys or high entropy alloys.

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