The influence of grain structure on the corrosion behaviour of 2A97-T3 Al-Cu-Li alloy

Xinxin Zhang; Xiaorong Zhou; Teruo Hashimoto; John Lindsay; Octav Ciuca; C Luo; Z. Sun; X. Zhang; Z. Tang

doi:10.1016/j.corsci.2016.12.005

The influence of grain structure on the corrosion behaviour of 2A97-T3 Al-Cu-Li alloy

Xinxin Zhang, Xiaorong Zhou, Teruo Hashimoto, John Lindsay, Octav Ciuca, C Luo, Z. Sun, X. Zhang, Z. Tang

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Abstract

In the present study, the corrosion behaviour of 2A97-T3 Al-Cu-Li alloy is investigated. The corrosion propagation path is characterized with electron backscatter diffraction (EBSD) and transmission Kikuchi diffraction (TKD), and correlated to local grain structure and the distribution of T1 (Al2CuLi) and TB (Al7Cu4Li) phase precipitates in the alloy. Localized corrosion occurs preferentially along the subgrain boundaries within unrecrystallized grains of this partially recrystallized alloy. The grain stored energy plays a more decisive role in corrosion propagation compared to T1 phase precipitate. The grain boundaries decorated by TB phase precipitates exhibit relatively low susceptibility to corrosion.

Original language	English
Pages (from-to)	14-21
Journal	Corrosion Science
Volume	116
Early online date	15 Dec 2016
DOIs	https://doi.org/10.1016/j.corsci.2016.12.005
Publication status	Published - 15 Feb 2017

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10.1016/j.corsci.2016.12.005Licence: CC BY

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title = "The influence of grain structure on the corrosion behaviour of 2A97-T3 Al-Cu-Li alloy",

abstract = "In the present study, the corrosion behaviour of 2A97-T3 Al-Cu-Li alloy is investigated. The corrosion propagation path is characterized with electron backscatter diffraction (EBSD) and transmission Kikuchi diffraction (TKD), and correlated to local grain structure and the distribution of T1 (Al2CuLi) and TB (Al7Cu4Li) phase precipitates in the alloy. Localized corrosion occurs preferentially along the subgrain boundaries within unrecrystallized grains of this partially recrystallized alloy. The grain stored energy plays a more decisive role in corrosion propagation compared to T1 phase precipitate. The grain boundaries decorated by TB phase precipitates exhibit relatively low susceptibility to corrosion.",

author = "Xinxin Zhang and Xiaorong Zhou and Teruo Hashimoto and John Lindsay and Octav Ciuca and C Luo and Z. Sun and X. Zhang and Z. Tang",

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T1 - The influence of grain structure on the corrosion behaviour of 2A97-T3 Al-Cu-Li alloy

AU - Zhang, Xinxin

AU - Zhou, Xiaorong

AU - Hashimoto, Teruo

AU - Lindsay, John

AU - Ciuca, Octav

AU - Luo, C

AU - Sun, Z.

AU - Zhang, X.

AU - Tang, Z.

PY - 2017/2/15

Y1 - 2017/2/15

N2 - In the present study, the corrosion behaviour of 2A97-T3 Al-Cu-Li alloy is investigated. The corrosion propagation path is characterized with electron backscatter diffraction (EBSD) and transmission Kikuchi diffraction (TKD), and correlated to local grain structure and the distribution of T1 (Al2CuLi) and TB (Al7Cu4Li) phase precipitates in the alloy. Localized corrosion occurs preferentially along the subgrain boundaries within unrecrystallized grains of this partially recrystallized alloy. The grain stored energy plays a more decisive role in corrosion propagation compared to T1 phase precipitate. The grain boundaries decorated by TB phase precipitates exhibit relatively low susceptibility to corrosion.

AB - In the present study, the corrosion behaviour of 2A97-T3 Al-Cu-Li alloy is investigated. The corrosion propagation path is characterized with electron backscatter diffraction (EBSD) and transmission Kikuchi diffraction (TKD), and correlated to local grain structure and the distribution of T1 (Al2CuLi) and TB (Al7Cu4Li) phase precipitates in the alloy. Localized corrosion occurs preferentially along the subgrain boundaries within unrecrystallized grains of this partially recrystallized alloy. The grain stored energy plays a more decisive role in corrosion propagation compared to T1 phase precipitate. The grain boundaries decorated by TB phase precipitates exhibit relatively low susceptibility to corrosion.

U2 - 10.1016/j.corsci.2016.12.005

DO - 10.1016/j.corsci.2016.12.005

M3 - Article

SN - 0010-938X

VL - 116

SP - 14

EP - 21

JO - Corrosion Science

JF - Corrosion Science

ER -

The influence of grain structure on the corrosion behaviour of 2A97-T3 Al-Cu-Li alloy

Abstract

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