Heterogeneous precipitation during homogenization cooling in Al–Mg–Si alloys

Shuaishuai Qin; Hui Xu Zhou; Xu Huang; Weidong Huang; Guanglei Lin; Taiki Tsuchiya; Seungwon Lee; Kenji Matsuda

doi:10.1016/j.matlet.2023.134054

Heterogeneous precipitation during homogenization cooling in Al–Mg–Si alloys

Shuaishuai Qin^*, Hui Xu Zhou, Xu Huang, Weidong Huang, Guanglei Lin, Taiki Tsuchiya, Seungwon Lee, Kenji Matsuda

^*Corresponding author for this work

Materials Design and Engineering

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

Abstract

“Boundaries” are frequently observed within the grains during homogenization/solution cooling of Al-Mg-Si billets. In this work, we confirmed that the formation of the “boundaries” is due to a complex but interesting heterogeneous precipitation behavior. This heterogeneous precipitation contains a high temperature behavior and a low temperature behavior, which is rarely observed during aging treatment with deformation induced dislocations. During the high temperature stage of cooling (>350 °C), the rod/lath-like precipitates formed at the dislocations tend to grow along two or three 〈1 0 0〉_Al directions, however, as the temperature decreases to near 200 °C, the precipitates tend to line up and parallel to each other, and the string-like precipitates appear along the dislocations between the precipitates.

Original language	English
Article number	134054
Journal	Materials Letters
Volume	339
DOIs	https://doi.org/10.1016/j.matlet.2023.134054
State	Published - 2023/05/15

Keywords

Cooling rate
Dislocation
Heterogeneous precipitation
Homogenization

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matlet.2023.134054

Cite this

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title = "Heterogeneous precipitation during homogenization cooling in Al–Mg–Si alloys",

abstract = "“Boundaries” are frequently observed within the grains during homogenization/solution cooling of Al-Mg-Si billets. In this work, we confirmed that the formation of the “boundaries” is due to a complex but interesting heterogeneous precipitation behavior. This heterogeneous precipitation contains a high temperature behavior and a low temperature behavior, which is rarely observed during aging treatment with deformation induced dislocations. During the high temperature stage of cooling (>350 °C), the rod/lath-like precipitates formed at the dislocations tend to grow along two or three 〈1 0 0〉Al directions, however, as the temperature decreases to near 200 °C, the precipitates tend to line up and parallel to each other, and the string-like precipitates appear along the dislocations between the precipitates.",

keywords = "Cooling rate, Dislocation, Heterogeneous precipitation, Homogenization",

author = "Shuaishuai Qin and Zhou, {Hui Xu} and Xu Huang and Weidong Huang and Guanglei Lin and Taiki Tsuchiya and Seungwon Lee and Kenji Matsuda",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = may,

day = "15",

doi = "10.1016/j.matlet.2023.134054",

language = "英語",

volume = "339",

journal = "Materials Letters",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Heterogeneous precipitation during homogenization cooling in Al–Mg–Si alloys

AU - Qin, Shuaishuai

AU - Zhou, Hui Xu

AU - Huang, Xu

AU - Huang, Weidong

AU - Lin, Guanglei

AU - Tsuchiya, Taiki

AU - Lee, Seungwon

AU - Matsuda, Kenji

PY - 2023/5/15

Y1 - 2023/5/15

N2 - “Boundaries” are frequently observed within the grains during homogenization/solution cooling of Al-Mg-Si billets. In this work, we confirmed that the formation of the “boundaries” is due to a complex but interesting heterogeneous precipitation behavior. This heterogeneous precipitation contains a high temperature behavior and a low temperature behavior, which is rarely observed during aging treatment with deformation induced dislocations. During the high temperature stage of cooling (>350 °C), the rod/lath-like precipitates formed at the dislocations tend to grow along two or three 〈1 0 0〉Al directions, however, as the temperature decreases to near 200 °C, the precipitates tend to line up and parallel to each other, and the string-like precipitates appear along the dislocations between the precipitates.

AB - “Boundaries” are frequently observed within the grains during homogenization/solution cooling of Al-Mg-Si billets. In this work, we confirmed that the formation of the “boundaries” is due to a complex but interesting heterogeneous precipitation behavior. This heterogeneous precipitation contains a high temperature behavior and a low temperature behavior, which is rarely observed during aging treatment with deformation induced dislocations. During the high temperature stage of cooling (>350 °C), the rod/lath-like precipitates formed at the dislocations tend to grow along two or three 〈1 0 0〉Al directions, however, as the temperature decreases to near 200 °C, the precipitates tend to line up and parallel to each other, and the string-like precipitates appear along the dislocations between the precipitates.

KW - Cooling rate

KW - Dislocation

KW - Heterogeneous precipitation

KW - Homogenization

UR - http://www.scopus.com/inward/record.url?scp=85148540229&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2023.134054

DO - 10.1016/j.matlet.2023.134054

M3 - 学術論文

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SN - 0167-577X

VL - 339

JO - Materials Letters

JF - Materials Letters

M1 - 134054

ER -

Heterogeneous precipitation during homogenization cooling in Al–Mg–Si alloys

Abstract

Keywords

ASJC Scopus subject areas

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