Achieving dispersed fine soft Bi particles and grain refinement in a hypermonotectic Al–Bi alloy by severe plastic deformation and annealing

Min Zha; Zhi Yuan Yu; Feng Qian; Hui Yuan Wang; Yan Jun Li; Ragnvald H. Mathiesen; Hans J. Roven

doi:10.1016/j.scriptamat.2018.06.029

Achieving dispersed fine soft Bi particles and grain refinement in a hypermonotectic Al–Bi alloy by severe plastic deformation and annealing

Min Zha, Zhi Yuan Yu, Feng Qian, Hui Yuan Wang^*, Yan Jun Li, Ragnvald H. Mathiesen, Hans J. Roven

^*Corresponding author for this work

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

14 Citations (Scopus)

Abstract

The present work revealed that equal-channel angular pressing (ECAP) deformation combined with appropriate annealing could represent as an efficient route to modify immiscible as-cast microstructure of a monotectic Al–8Bi alloy by a complete redistribution of immiscible Bi particles and grain refinement of alloy matrix. Especially, we found that the mean size of Bi particles in the 4-pass ECAPed Al–8Bi sample decreases after annealing at 200 °C for 8 h, due to inverse coarsening driven by the reduction of elastic energy and interfacial energy induced by morphology change and spatial distribution of Bi particles.

Original language	English
Pages (from-to)	124-128
Number of pages	5
Journal	Scripta Materialia
Volume	155
DOIs	https://doi.org/10.1016/j.scriptamat.2018.06.029
Publication status	Published - Oct 2018
Externally published	Yes

Keywords

Al–Bi alloys
ECAP
Microstructure
Particle dispersion
Recrystallization

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10.1016/j.scriptamat.2018.06.029

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title = "Achieving dispersed fine soft Bi particles and grain refinement in a hypermonotectic Al–Bi alloy by severe plastic deformation and annealing",

abstract = "The present work revealed that equal-channel angular pressing (ECAP) deformation combined with appropriate annealing could represent as an efficient route to modify immiscible as-cast microstructure of a monotectic Al–8Bi alloy by a complete redistribution of immiscible Bi particles and grain refinement of alloy matrix. Especially, we found that the mean size of Bi particles in the 4-pass ECAPed Al–8Bi sample decreases after annealing at 200 °C for 8 h, due to inverse coarsening driven by the reduction of elastic energy and interfacial energy induced by morphology change and spatial distribution of Bi particles.",

keywords = "Al–Bi alloys, ECAP, Microstructure, Particle dispersion, Recrystallization",

author = "Min Zha and Yu, {Zhi Yuan} and Feng Qian and Wang, {Hui Yuan} and Li, {Yan Jun} and Mathiesen, {Ragnvald H.} and Roven, {Hans J.}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = oct,

doi = "10.1016/j.scriptamat.2018.06.029",

language = "English",

volume = "155",

pages = "124--128",

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T1 - Achieving dispersed fine soft Bi particles and grain refinement in a hypermonotectic Al–Bi alloy by severe plastic deformation and annealing

AU - Zha, Min

AU - Yu, Zhi Yuan

AU - Qian, Feng

AU - Wang, Hui Yuan

AU - Li, Yan Jun

AU - Mathiesen, Ragnvald H.

AU - Roven, Hans J.

PY - 2018/10

Y1 - 2018/10

N2 - The present work revealed that equal-channel angular pressing (ECAP) deformation combined with appropriate annealing could represent as an efficient route to modify immiscible as-cast microstructure of a monotectic Al–8Bi alloy by a complete redistribution of immiscible Bi particles and grain refinement of alloy matrix. Especially, we found that the mean size of Bi particles in the 4-pass ECAPed Al–8Bi sample decreases after annealing at 200 °C for 8 h, due to inverse coarsening driven by the reduction of elastic energy and interfacial energy induced by morphology change and spatial distribution of Bi particles.

AB - The present work revealed that equal-channel angular pressing (ECAP) deformation combined with appropriate annealing could represent as an efficient route to modify immiscible as-cast microstructure of a monotectic Al–8Bi alloy by a complete redistribution of immiscible Bi particles and grain refinement of alloy matrix. Especially, we found that the mean size of Bi particles in the 4-pass ECAPed Al–8Bi sample decreases after annealing at 200 °C for 8 h, due to inverse coarsening driven by the reduction of elastic energy and interfacial energy induced by morphology change and spatial distribution of Bi particles.

KW - Al–Bi alloys

KW - ECAP

KW - Microstructure

KW - Particle dispersion

KW - Recrystallization

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U2 - 10.1016/j.scriptamat.2018.06.029

DO - 10.1016/j.scriptamat.2018.06.029

M3 - Article

AN - SCOPUS:85048969134

SN - 1359-6462

VL - 155

SP - 124

EP - 128

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Achieving dispersed fine soft Bi particles and grain refinement in a hypermonotectic Al–Bi alloy by severe plastic deformation and annealing

Abstract

Keywords

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