Intergranular corrosion of AA6082 Al-Mg-Si alloy extrusion: the influence of trace Cu and grain boundary misorientation

Xinxin Zhang; You Lv; Teruo Hashimoto; Jan-Olov  Nilsson; Xiaorong Zhou

Intergranular corrosion of AA6082 Al-Mg-Si alloy extrusion: the influence of trace Cu and grain boundary misorientation

Xinxin Zhang, You Lv, Teruo Hashimoto, Jan-Olov Nilsson, Xiaorong Zhou

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

Abstract

In the present work, the influence of trace level Cu on intergranular corrosion (IGC) in AA6082 Al-Mg-Si alloy is studied using correlative accelerated corrosion testing and high resolution electron microscopy. Further, grain boundary structure and its correlation to IGC are also investigated using electron backscatter diffraction (EBSD) and transmission Kikuchi diffraction (TKD). It is found that in AA6082-T6 alloy with very low Cu content (0.06 wt.%), about 13% of high angle grain boundaries have Al2Cu precipitates, which promotes IGC at the grain boundaries.

Original language	English
Journal	Journal of Alloys and Compounds
Publication status	Accepted/In press - 14 Sept 2020

LightForm: Embedding Materials Engineering in Manufacturing with Light Alloys
Prangnell, P., Curioni, M., Haigh, S., Quinta Da Fonseca, J., Robson, J., Shanthraj, P. & Zhou, X.
1/10/17 → 18/10/23
Project: Research
Future Liquid Metal Engineering Hub
Zhou, X.
1/11/15 → 31/10/23
Project: Research

Cite this

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title = "Intergranular corrosion of AA6082 Al-Mg-Si alloy extrusion: the influence of trace Cu and grain boundary misorientation",

abstract = "In the present work, the influence of trace level Cu on intergranular corrosion (IGC) in AA6082 Al-Mg-Si alloy is studied using correlative accelerated corrosion testing and high resolution electron microscopy. Further, grain boundary structure and its correlation to IGC are also investigated using electron backscatter diffraction (EBSD) and transmission Kikuchi diffraction (TKD). It is found that in AA6082-T6 alloy with very low Cu content (0.06 wt.%), about 13% of high angle grain boundaries have Al2Cu precipitates, which promotes IGC at the grain boundaries.",

author = "Xinxin Zhang and You Lv and Teruo Hashimoto and Jan-Olov Nilsson and Xiaorong Zhou",

year = "2020",

month = sep,

day = "14",

language = "English",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Intergranular corrosion of AA6082 Al-Mg-Si alloy extrusion: the influence of trace Cu and grain boundary misorientation

AU - Zhang, Xinxin

AU - Lv, You

AU - Hashimoto, Teruo

AU - Nilsson, Jan-Olov

AU - Zhou, Xiaorong

PY - 2020/9/14

Y1 - 2020/9/14

N2 - In the present work, the influence of trace level Cu on intergranular corrosion (IGC) in AA6082 Al-Mg-Si alloy is studied using correlative accelerated corrosion testing and high resolution electron microscopy. Further, grain boundary structure and its correlation to IGC are also investigated using electron backscatter diffraction (EBSD) and transmission Kikuchi diffraction (TKD). It is found that in AA6082-T6 alloy with very low Cu content (0.06 wt.%), about 13% of high angle grain boundaries have Al2Cu precipitates, which promotes IGC at the grain boundaries.

AB - In the present work, the influence of trace level Cu on intergranular corrosion (IGC) in AA6082 Al-Mg-Si alloy is studied using correlative accelerated corrosion testing and high resolution electron microscopy. Further, grain boundary structure and its correlation to IGC are also investigated using electron backscatter diffraction (EBSD) and transmission Kikuchi diffraction (TKD). It is found that in AA6082-T6 alloy with very low Cu content (0.06 wt.%), about 13% of high angle grain boundaries have Al2Cu precipitates, which promotes IGC at the grain boundaries.

M3 - Article

SN - 0925-8388

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Intergranular corrosion of AA6082 Al-Mg-Si alloy extrusion: the influence of trace Cu and grain boundary misorientation

Abstract

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Projects

LightForm: Embedding Materials Engineering in Manufacturing with Light Alloys

Future Liquid Metal Engineering Hub

Cite this