Microstructure and corrosion properties of the low-density single-phase compositionally complex alloy AlTiVCr

Y. Qiu; S. Thomas; M. A. Gibson; H. L. Fraser; K. Pohl; N. Birbilis

doi:10.1016/j.corsci.2018.01.035

Microstructure and corrosion properties of the low-density single-phase compositionally complex alloy AlTiVCr

Y. Qiu, S. Thomas^*, M. A. Gibson, H. L. Fraser, K. Pohl, N. Birbilis

^*Corresponding author for this work

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

98 Citations (Scopus)

Abstract

Compositionally complex alloys (CCAs) possess unique microstructures and passive films, which need to be studied to contribute to fundamental understanding of corrosion in such alloys. Herein, we report the corrosion characteristics of a single phase CCA, AlTiVCr, designed to have a low-density (5.06 g cm⁻³) relative to other CCAs. AlTiVCr was found to exhibit excellent corrosion resistance in 0.6 M NaCl (with E_pit > 1.27 V_SCE). A passive layer comprising of mixed metallic oxides interspersed with un-oxidised metal species was detected upon this CCA using X-ray photoelectron spectroscopy, which was hypothesised to contribute to excellent corrosion resistance.

Original language	English
Pages (from-to)	386-396
Number of pages	11
Journal	Corrosion Science
Volume	133
DOIs	https://doi.org/10.1016/j.corsci.2018.01.035
Publication status	Published - 1 Apr 2018
Externally published	Yes

Access to Document

10.1016/j.corsci.2018.01.035

Cite this

@article{f5c3882928954fae900440a1af1c4172,

title = "Microstructure and corrosion properties of the low-density single-phase compositionally complex alloy AlTiVCr",

abstract = "Compositionally complex alloys (CCAs) possess unique microstructures and passive films, which need to be studied to contribute to fundamental understanding of corrosion in such alloys. Herein, we report the corrosion characteristics of a single phase CCA, AlTiVCr, designed to have a low-density (5.06 g cm−3) relative to other CCAs. AlTiVCr was found to exhibit excellent corrosion resistance in 0.6 M NaCl (with Epit > 1.27 VSCE). A passive layer comprising of mixed metallic oxides interspersed with un-oxidised metal species was detected upon this CCA using X-ray photoelectron spectroscopy, which was hypothesised to contribute to excellent corrosion resistance.",

keywords = "Compositionally complex alloy, High entropy alloy, Polarisation, TEM, XPS",

author = "Y. Qiu and S. Thomas and Gibson, {M. A.} and Fraser, {H. L.} and K. Pohl and N. Birbilis",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = apr,

day = "1",

doi = "10.1016/j.corsci.2018.01.035",

language = "English",

volume = "133",

pages = "386--396",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - Microstructure and corrosion properties of the low-density single-phase compositionally complex alloy AlTiVCr

AU - Qiu, Y.

AU - Thomas, S.

AU - Gibson, M. A.

AU - Fraser, H. L.

AU - Pohl, K.

AU - Birbilis, N.

PY - 2018/4/1

Y1 - 2018/4/1

N2 - Compositionally complex alloys (CCAs) possess unique microstructures and passive films, which need to be studied to contribute to fundamental understanding of corrosion in such alloys. Herein, we report the corrosion characteristics of a single phase CCA, AlTiVCr, designed to have a low-density (5.06 g cm−3) relative to other CCAs. AlTiVCr was found to exhibit excellent corrosion resistance in 0.6 M NaCl (with Epit > 1.27 VSCE). A passive layer comprising of mixed metallic oxides interspersed with un-oxidised metal species was detected upon this CCA using X-ray photoelectron spectroscopy, which was hypothesised to contribute to excellent corrosion resistance.

AB - Compositionally complex alloys (CCAs) possess unique microstructures and passive films, which need to be studied to contribute to fundamental understanding of corrosion in such alloys. Herein, we report the corrosion characteristics of a single phase CCA, AlTiVCr, designed to have a low-density (5.06 g cm−3) relative to other CCAs. AlTiVCr was found to exhibit excellent corrosion resistance in 0.6 M NaCl (with Epit > 1.27 VSCE). A passive layer comprising of mixed metallic oxides interspersed with un-oxidised metal species was detected upon this CCA using X-ray photoelectron spectroscopy, which was hypothesised to contribute to excellent corrosion resistance.

KW - Compositionally complex alloy

KW - High entropy alloy

KW - Polarisation

KW - TEM

KW - XPS

UR - http://www.scopus.com/inward/record.url?scp=85041621520&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2018.01.035

DO - 10.1016/j.corsci.2018.01.035

M3 - Article

SN - 0010-938X

VL - 133

SP - 386

EP - 396

JO - Corrosion Science

JF - Corrosion Science

ER -

Microstructure and corrosion properties of the low-density single-phase compositionally complex alloy AlTiVCr

Abstract

Access to Document

Other files and links

Fingerprint

Cite this