Impact of Annealing Prior to Solution Treatment on Aging Precipitates and Intergranular Corrosion Behavior of Al-Cu-Li Alloy 2050

Zhi hao Ye; Wen xin Cai; Jin feng Li; Xiang rong Chen; Rui feng Zhang; Nick Birbilis; Yong lai Chen; Xu hu Zhang; Peng cheng Ma; Zi qiao Zheng

doi:10.1007/s11661-018-4596-1

Impact of Annealing Prior to Solution Treatment on Aging Precipitates and Intergranular Corrosion Behavior of Al-Cu-Li Alloy 2050

Zhi hao Ye, Wen xin Cai, Jin feng Li^*, Xiang rong Chen, Rui feng Zhang, Nick Birbilis, Yong lai Chen, Xu hu Zhang, Peng cheng Ma, Zi qiao Zheng

^*Corresponding author for this work

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

15 Citations (Scopus)

Abstract

The influences of annealing prior to solution treatment on the grain structure, subsequent aging precipitates, and intergranular corrosion (IGC) of Al-Cu-Li alloy (AA2050) sheet with T6 aging at 448 K (175 °C) were investigated. Annealing impedes the full recrystallization during solution treatment, increasing the population density of T1 (Al₂CuLi) precipitates, but decreasing that of θ′ (Al₂Cu) precipitates, of the aged alloy. Meanwhile, annealing leads to the heterogeneous distribution of T1 precipitates, increasing the alloy hardness, and decreasing the open-circuit potential of the aged alloy. With prolonged aging time, the corrosion mode of the aged AA2050 samples with and without annealing evolved in a similar manner. The corrosion mode as a function of aging may be summarized as local IGC with pitting and general IGC with pitting (following initial aging and under the underaged condition), pitting corrosion (later in the under-aging stage), pitting with slight IGC (near the peak-aged condition), and pitting with local IGC (under the overaging condition). The annealing treatment hinders IGC propagation on the rolling surface while accelerating the IGC on transverse surfaces.

Original language	English
Pages (from-to)	2471-2486
Number of pages	16
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	49
Issue number	6
DOIs	https://doi.org/10.1007/s11661-018-4596-1
Publication status	Published - 1 Jun 2018
Externally published	Yes

Access to Document

10.1007/s11661-018-4596-1

Cite this

Ye, Z. H., Cai, W. X., Li, J. F., Chen, X. R., Zhang, R. F., Birbilis, N., Chen, Y. L., Zhang, X. H., Ma, P. C., & Zheng, Z. Q. (2018). Impact of Annealing Prior to Solution Treatment on Aging Precipitates and Intergranular Corrosion Behavior of Al-Cu-Li Alloy 2050. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 49(6), 2471-2486. https://doi.org/10.1007/s11661-018-4596-1

@article{b291d02de1544d4f884fc0e502bcdbbc,

title = "Impact of Annealing Prior to Solution Treatment on Aging Precipitates and Intergranular Corrosion Behavior of Al-Cu-Li Alloy 2050",

abstract = "The influences of annealing prior to solution treatment on the grain structure, subsequent aging precipitates, and intergranular corrosion (IGC) of Al-Cu-Li alloy (AA2050) sheet with T6 aging at 448 K (175 °C) were investigated. Annealing impedes the full recrystallization during solution treatment, increasing the population density of T1 (Al2CuLi) precipitates, but decreasing that of θ′ (Al2Cu) precipitates, of the aged alloy. Meanwhile, annealing leads to the heterogeneous distribution of T1 precipitates, increasing the alloy hardness, and decreasing the open-circuit potential of the aged alloy. With prolonged aging time, the corrosion mode of the aged AA2050 samples with and without annealing evolved in a similar manner. The corrosion mode as a function of aging may be summarized as local IGC with pitting and general IGC with pitting (following initial aging and under the underaged condition), pitting corrosion (later in the under-aging stage), pitting with slight IGC (near the peak-aged condition), and pitting with local IGC (under the overaging condition). The annealing treatment hinders IGC propagation on the rolling surface while accelerating the IGC on transverse surfaces.",

author = "Ye, {Zhi hao} and Cai, {Wen xin} and Li, {Jin feng} and Chen, {Xiang rong} and Zhang, {Rui feng} and Nick Birbilis and Chen, {Yong lai} and Zhang, {Xu hu} and Ma, {Peng cheng} and Zheng, {Zi qiao}",

note = "Publisher Copyright: {\textcopyright} 2018, The Minerals, Metals & Materials Society and ASM International.",

year = "2018",

month = jun,

day = "1",

doi = "10.1007/s11661-018-4596-1",

language = "English",

volume = "49",

pages = "2471--2486",

journal = "Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science",

issn = "1073-5623",

publisher = "Springer Boston",

number = "6",

}

Ye, ZH, Cai, WX, Li, JF, Chen, XR, Zhang, RF, Birbilis, N, Chen, YL, Zhang, XH, Ma, PC & Zheng, ZQ 2018, 'Impact of Annealing Prior to Solution Treatment on Aging Precipitates and Intergranular Corrosion Behavior of Al-Cu-Li Alloy 2050', Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, vol. 49, no. 6, pp. 2471-2486. https://doi.org/10.1007/s11661-018-4596-1

Impact of Annealing Prior to Solution Treatment on Aging Precipitates and Intergranular Corrosion Behavior of Al-Cu-Li Alloy 2050. / Ye, Zhi hao; Cai, Wen xin; Li, Jin feng et al.
In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 49, No. 6, 01.06.2018, p. 2471-2486.

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

TY - JOUR

T1 - Impact of Annealing Prior to Solution Treatment on Aging Precipitates and Intergranular Corrosion Behavior of Al-Cu-Li Alloy 2050

AU - Ye, Zhi hao

AU - Cai, Wen xin

AU - Li, Jin feng

AU - Chen, Xiang rong

AU - Zhang, Rui feng

AU - Birbilis, Nick

AU - Chen, Yong lai

AU - Zhang, Xu hu

AU - Ma, Peng cheng

AU - Zheng, Zi qiao

PY - 2018/6/1

Y1 - 2018/6/1

N2 - The influences of annealing prior to solution treatment on the grain structure, subsequent aging precipitates, and intergranular corrosion (IGC) of Al-Cu-Li alloy (AA2050) sheet with T6 aging at 448 K (175 °C) were investigated. Annealing impedes the full recrystallization during solution treatment, increasing the population density of T1 (Al2CuLi) precipitates, but decreasing that of θ′ (Al2Cu) precipitates, of the aged alloy. Meanwhile, annealing leads to the heterogeneous distribution of T1 precipitates, increasing the alloy hardness, and decreasing the open-circuit potential of the aged alloy. With prolonged aging time, the corrosion mode of the aged AA2050 samples with and without annealing evolved in a similar manner. The corrosion mode as a function of aging may be summarized as local IGC with pitting and general IGC with pitting (following initial aging and under the underaged condition), pitting corrosion (later in the under-aging stage), pitting with slight IGC (near the peak-aged condition), and pitting with local IGC (under the overaging condition). The annealing treatment hinders IGC propagation on the rolling surface while accelerating the IGC on transverse surfaces.

AB - The influences of annealing prior to solution treatment on the grain structure, subsequent aging precipitates, and intergranular corrosion (IGC) of Al-Cu-Li alloy (AA2050) sheet with T6 aging at 448 K (175 °C) were investigated. Annealing impedes the full recrystallization during solution treatment, increasing the population density of T1 (Al2CuLi) precipitates, but decreasing that of θ′ (Al2Cu) precipitates, of the aged alloy. Meanwhile, annealing leads to the heterogeneous distribution of T1 precipitates, increasing the alloy hardness, and decreasing the open-circuit potential of the aged alloy. With prolonged aging time, the corrosion mode of the aged AA2050 samples with and without annealing evolved in a similar manner. The corrosion mode as a function of aging may be summarized as local IGC with pitting and general IGC with pitting (following initial aging and under the underaged condition), pitting corrosion (later in the under-aging stage), pitting with slight IGC (near the peak-aged condition), and pitting with local IGC (under the overaging condition). The annealing treatment hinders IGC propagation on the rolling surface while accelerating the IGC on transverse surfaces.

UR - http://www.scopus.com/inward/record.url?scp=85045107716&partnerID=8YFLogxK

U2 - 10.1007/s11661-018-4596-1

DO - 10.1007/s11661-018-4596-1

M3 - Article

SN - 1073-5623

VL - 49

SP - 2471

EP - 2486

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

IS - 6

ER -

Impact of Annealing Prior to Solution Treatment on Aging Precipitates and Intergranular Corrosion Behavior of Al-Cu-Li Alloy 2050

Abstract

Access to Document

Other files and links

Fingerprint

Cite this