The composition-dependent oxidation film formation in Mg-Li-Al alloys

Song Tang; Tongzheng Xin; Wanqiang Xu; David Miskovic; Chuanqiang Li; Nick Birbilis; Michael Ferry

doi:10.1016/j.corsci.2021.109508

The composition-dependent oxidation film formation in Mg-Li-Al alloys

Song Tang, Tongzheng Xin^*, Wanqiang Xu, David Miskovic, Chuanqiang Li, Nick Birbilis, Michael Ferry

^*Corresponding author for this work

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

15 Citations (Scopus)

Abstract

The composition-dependent oxidation film formation behaviour in Mg-Li-Al alloys was investigated via diffusion couple experiments. The concentration gradients of alloying elements across the bonded interface resulted in both microstructural and oxidation behaviour changes. The interdiffusion of alloying elements led to four different matrix zones. Different oxidation behaviours in single-phase zones were caused mainly by Li concentration variations among them, specifically, higher Li contents bring about thicker oxide films. A thicker oxidation film induced by accelerated oxidation in the duplex diffusion zone was observed compared to those in the single-phase zones, which was a result of galvanic degradation.

Original language	English
Article number	109508
Journal	Corrosion Science
Volume	187
DOIs	https://doi.org/10.1016/j.corsci.2021.109508
Publication status	Published - 15 Jul 2021

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10.1016/j.corsci.2021.109508

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title = "The composition-dependent oxidation film formation in Mg-Li-Al alloys",

abstract = "The composition-dependent oxidation film formation behaviour in Mg-Li-Al alloys was investigated via diffusion couple experiments. The concentration gradients of alloying elements across the bonded interface resulted in both microstructural and oxidation behaviour changes. The interdiffusion of alloying elements led to four different matrix zones. Different oxidation behaviours in single-phase zones were caused mainly by Li concentration variations among them, specifically, higher Li contents bring about thicker oxide films. A thicker oxidation film induced by accelerated oxidation in the duplex diffusion zone was observed compared to those in the single-phase zones, which was a result of galvanic degradation.",

keywords = "Diffusion couple, Galvanic degradation, Magnesium-lithium alloys, Oxidation behaviour, Phase transformation",

author = "Song Tang and Tongzheng Xin and Wanqiang Xu and David Miskovic and Chuanqiang Li and Nick Birbilis and Michael Ferry",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

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day = "15",

doi = "10.1016/j.corsci.2021.109508",

language = "English",

volume = "187",

journal = "Corrosion Science",

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TY - JOUR

T1 - The composition-dependent oxidation film formation in Mg-Li-Al alloys

AU - Tang, Song

AU - Xin, Tongzheng

AU - Xu, Wanqiang

AU - Miskovic, David

AU - Li, Chuanqiang

AU - Birbilis, Nick

AU - Ferry, Michael

PY - 2021/7/15

Y1 - 2021/7/15

N2 - The composition-dependent oxidation film formation behaviour in Mg-Li-Al alloys was investigated via diffusion couple experiments. The concentration gradients of alloying elements across the bonded interface resulted in both microstructural and oxidation behaviour changes. The interdiffusion of alloying elements led to four different matrix zones. Different oxidation behaviours in single-phase zones were caused mainly by Li concentration variations among them, specifically, higher Li contents bring about thicker oxide films. A thicker oxidation film induced by accelerated oxidation in the duplex diffusion zone was observed compared to those in the single-phase zones, which was a result of galvanic degradation.

AB - The composition-dependent oxidation film formation behaviour in Mg-Li-Al alloys was investigated via diffusion couple experiments. The concentration gradients of alloying elements across the bonded interface resulted in both microstructural and oxidation behaviour changes. The interdiffusion of alloying elements led to four different matrix zones. Different oxidation behaviours in single-phase zones were caused mainly by Li concentration variations among them, specifically, higher Li contents bring about thicker oxide films. A thicker oxidation film induced by accelerated oxidation in the duplex diffusion zone was observed compared to those in the single-phase zones, which was a result of galvanic degradation.

KW - Diffusion couple

KW - Galvanic degradation

KW - Magnesium-lithium alloys

KW - Oxidation behaviour

KW - Phase transformation

UR - http://www.scopus.com/inward/record.url?scp=85105063376&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2021.109508

DO - 10.1016/j.corsci.2021.109508

M3 - Article

SN - 0010-938X

VL - 187

JO - Corrosion Science

JF - Corrosion Science

M1 - 109508

ER -

The composition-dependent oxidation film formation in Mg-Li-Al alloys

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