3D X-ray microtomography and mechanical characterization of corrosion-induced damage in 7075 aluminium (Al) alloys

Renuka Vallabhaneni; Tyler J. Stannard; C. Shashank Kaira; Nikhilesh Chawla

doi:10.1016/j.corsci.2018.04.046

3D X-ray microtomography and mechanical characterization of corrosion-induced damage in 7075 aluminium (Al) alloys

Renuka Vallabhaneni, Tyler J. Stannard, C. Shashank Kaira, Nikhilesh Chawla

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

20 Scopus citations

Abstract

We report on the 3D microstructure, composition and mechanical properties in the corroded region of Al (7075-T651) alloy corroded in 3.5 wt.% NaCl. Visualization and quantification of the microstructure was conducted using X-ray tomography with a focus on change in dimensions of pits with increasing corrosion. The variation of tensile strength with corrosion and its relationship with microstructure was also studied. Compositional analysis using EDS, coupled with nanoindentation, showed a partially corroded region adjacent to the corrosion product layer.

Original language	English (US)
Pages (from-to)	97-113
Number of pages	17
Journal	Corrosion Science
Volume	139
DOIs	https://doi.org/10.1016/j.corsci.2018.04.046
State	Published - Jul 15 2018

Keywords

3.5 wt.% NaCl
7075 aluminium
Corrosion
Nanoindentation
Pits
X-ray tomography

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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10.1016/j.corsci.2018.04.046

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title = "3D X-ray microtomography and mechanical characterization of corrosion-induced damage in 7075 aluminium (Al) alloys",

abstract = "We report on the 3D microstructure, composition and mechanical properties in the corroded region of Al (7075-T651) alloy corroded in 3.5 wt.% NaCl. Visualization and quantification of the microstructure was conducted using X-ray tomography with a focus on change in dimensions of pits with increasing corrosion. The variation of tensile strength with corrosion and its relationship with microstructure was also studied. Compositional analysis using EDS, coupled with nanoindentation, showed a partially corroded region adjacent to the corrosion product layer.",

keywords = "3.5 wt.% NaCl, 7075 aluminium, Corrosion, Nanoindentation, Pits, X-ray tomography",

author = "Renuka Vallabhaneni and Stannard, {Tyler J.} and Kaira, {C. Shashank} and Nikhilesh Chawla",

note = "Funding Information: The authors are grateful for financial support from the Air Force Office of Scientific Research through the multi-university research initiative (MURI) on Peridynamics (Dr. Ali Sayir, program manager). We would also like to thank our collaborators Z. Chen, S. Li and F. Bobaru at university of Nebraska-Lincoln for their inputs in this work. The authors also acknowledge the use of facilities at the Center for 4D Materials Science (4DMS) at Arizona State University. Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

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doi = "10.1016/j.corsci.2018.04.046",

language = "English (US)",

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AU - Vallabhaneni, Renuka

AU - Stannard, Tyler J.

AU - Kaira, C. Shashank

AU - Chawla, Nikhilesh

N1 - Funding Information: The authors are grateful for financial support from the Air Force Office of Scientific Research through the multi-university research initiative (MURI) on Peridynamics (Dr. Ali Sayir, program manager). We would also like to thank our collaborators Z. Chen, S. Li and F. Bobaru at university of Nebraska-Lincoln for their inputs in this work. The authors also acknowledge the use of facilities at the Center for 4D Materials Science (4DMS) at Arizona State University. Publisher Copyright: © 2018 Elsevier Ltd

PY - 2018/7/15

Y1 - 2018/7/15

N2 - We report on the 3D microstructure, composition and mechanical properties in the corroded region of Al (7075-T651) alloy corroded in 3.5 wt.% NaCl. Visualization and quantification of the microstructure was conducted using X-ray tomography with a focus on change in dimensions of pits with increasing corrosion. The variation of tensile strength with corrosion and its relationship with microstructure was also studied. Compositional analysis using EDS, coupled with nanoindentation, showed a partially corroded region adjacent to the corrosion product layer.

AB - We report on the 3D microstructure, composition and mechanical properties in the corroded region of Al (7075-T651) alloy corroded in 3.5 wt.% NaCl. Visualization and quantification of the microstructure was conducted using X-ray tomography with a focus on change in dimensions of pits with increasing corrosion. The variation of tensile strength with corrosion and its relationship with microstructure was also studied. Compositional analysis using EDS, coupled with nanoindentation, showed a partially corroded region adjacent to the corrosion product layer.

KW - 3.5 wt.% NaCl

KW - 7075 aluminium

KW - Corrosion

KW - Nanoindentation

KW - Pits

KW - X-ray tomography

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DO - 10.1016/j.corsci.2018.04.046

M3 - Article

AN - SCOPUS:85046622533

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VL - 139

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JO - Corrosion Science

JF - Corrosion Science

ER -

3D X-ray microtomography and mechanical characterization of corrosion-induced damage in 7075 aluminium (Al) alloys

Abstract

Keywords

ASJC Scopus subject areas

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