Microstructure and mechanical properties of SiCp/AZ91 composite processed with extrusion and EPT

Hongfei Wu; Zhaohui Shan; Jianfeng Fan; Qiang Zhang; Kunkun Deng; Yucheng Wu; Weiguo Li; Hongbiao Dong; Bingshe Xu

doi:10.1080/02670836.2021.1885579

Microstructure and mechanical properties of SiCp/AZ91 composite processed with extrusion and EPT

Hongfei Wu
, Zhaohui Shan
, Jianfeng Fan^*
, Qiang Zhang
, Kunkun Deng
, Yucheng Wu
, Weiguo Li
, Hongbiao Dong
, Bingshe Xu

^*Corresponding author for this work

Metallurgy and Materials

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

Abstract

By hot extrusion at 250°C and electrical pulse treatment (EPT) of 40 μs duration and 10 min processing time, a homogeneous matrix microstructure with an average grain size of 0.91 μm and abundant Mg₁₇Al₁₂ phase was obtained in SiCp/AZ91 magnesium matrix composite. Moreover, SiCp were helpful to promote the accumulation of crystal defects and the precipitation of Mg₁₇Al₁₂ phase. After extrusion at 250°C, the yield strength (YS) and ultimate tensile strength (UTS) of the composite reached 480 and 556 MPa, respectively. With the increase of the duration and the processing time, the YS and UTS of SiCp/AZ91 composite were reduced due to the softening effect of static recrystallisation but its tensile elongation to failure (TEF) was improved slightly.

Original language	English
Pages (from-to)	269-279
Number of pages	11
Journal	Materials Science and Technology (United Kingdom)
Volume	37
Issue number	3
Early online date	1 Feb 2021
DOIs	https://doi.org/10.1080/02670836.2021.1885579
Publication status	Published - 20 Feb 2021

Bibliographical note

Publisher Copyright:
© 2021 Institute of Materials, Minerals and Mining.

Keywords

electrical pulse treatment
hot extrusion
mechanical properties
SiCp/AZ91 magnesium matrix composite
static recrystallisation

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1080/02670836.2021.1885579Licence: None: All rights reserved

Cite this

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title = "Microstructure and mechanical properties of SiCp/AZ91 composite processed with extrusion and EPT",

abstract = "By hot extrusion at 250°C and electrical pulse treatment (EPT) of 40 μs duration and 10 min processing time, a homogeneous matrix microstructure with an average grain size of 0.91 μm and abundant Mg17Al12 phase was obtained in SiCp/AZ91 magnesium matrix composite. Moreover, SiCp were helpful to promote the accumulation of crystal defects and the precipitation of Mg17Al12 phase. After extrusion at 250°C, the yield strength (YS) and ultimate tensile strength (UTS) of the composite reached 480 and 556 MPa, respectively. With the increase of the duration and the processing time, the YS and UTS of SiCp/AZ91 composite were reduced due to the softening effect of static recrystallisation but its tensile elongation to failure (TEF) was improved slightly.",

keywords = "electrical pulse treatment, hot extrusion, mechanical properties, SiCp/AZ91 magnesium matrix composite, static recrystallisation",

author = "Hongfei Wu and Zhaohui Shan and Jianfeng Fan and Qiang Zhang and Kunkun Deng and Yucheng Wu and Weiguo Li and Hongbiao Dong and Bingshe Xu",

note = "Publisher Copyright: {\textcopyright} 2021 Institute of Materials, Minerals and Mining.",

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T1 - Microstructure and mechanical properties of SiCp/AZ91 composite processed with extrusion and EPT

AU - Wu, Hongfei

AU - Shan, Zhaohui

AU - Fan, Jianfeng

AU - Zhang, Qiang

AU - Deng, Kunkun

AU - Wu, Yucheng

AU - Li, Weiguo

AU - Dong, Hongbiao

AU - Xu, Bingshe

PY - 2021/2/20

Y1 - 2021/2/20

N2 - By hot extrusion at 250°C and electrical pulse treatment (EPT) of 40 μs duration and 10 min processing time, a homogeneous matrix microstructure with an average grain size of 0.91 μm and abundant Mg17Al12 phase was obtained in SiCp/AZ91 magnesium matrix composite. Moreover, SiCp were helpful to promote the accumulation of crystal defects and the precipitation of Mg17Al12 phase. After extrusion at 250°C, the yield strength (YS) and ultimate tensile strength (UTS) of the composite reached 480 and 556 MPa, respectively. With the increase of the duration and the processing time, the YS and UTS of SiCp/AZ91 composite were reduced due to the softening effect of static recrystallisation but its tensile elongation to failure (TEF) was improved slightly.

AB - By hot extrusion at 250°C and electrical pulse treatment (EPT) of 40 μs duration and 10 min processing time, a homogeneous matrix microstructure with an average grain size of 0.91 μm and abundant Mg17Al12 phase was obtained in SiCp/AZ91 magnesium matrix composite. Moreover, SiCp were helpful to promote the accumulation of crystal defects and the precipitation of Mg17Al12 phase. After extrusion at 250°C, the yield strength (YS) and ultimate tensile strength (UTS) of the composite reached 480 and 556 MPa, respectively. With the increase of the duration and the processing time, the YS and UTS of SiCp/AZ91 composite were reduced due to the softening effect of static recrystallisation but its tensile elongation to failure (TEF) was improved slightly.

KW - electrical pulse treatment

KW - hot extrusion

KW - mechanical properties

KW - SiCp/AZ91 magnesium matrix composite

KW - static recrystallisation

UR - https://www.scopus.com/pages/publications/85101168252

U2 - 10.1080/02670836.2021.1885579

DO - 10.1080/02670836.2021.1885579

M3 - Article

AN - SCOPUS:85101168252

SN - 0267-0836

VL - 37

SP - 269

EP - 279

JO - Materials Science and Technology (United Kingdom)

JF - Materials Science and Technology (United Kingdom)

IS - 3

ER -

Microstructure and mechanical properties of SiCp/AZ91 composite processed with extrusion and EPT

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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