Effect of equal channel angular pressing on the mechanical properties of homogenized hybrid AZ61 magnesium composites

Song Jeng Huang; Murugan Subramani; Konstantin Borodianskiy; Philip Nathaniel Immanuel; Chao Ching Chiang

doi:10.1016/j.mtcomm.2022.104974

Effect of equal channel angular pressing on the mechanical properties of homogenized hybrid AZ61 magnesium composites

Song Jeng Huang, Murugan Subramani, Konstantin Borodianskiy, Philip Nathaniel Immanuel, Chao Ching Chiang

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

15 Scopus citations

Abstract

This study addressed the development and investigation of an AZ61 hybrid composite (HBC) fabricated by the stir casting method followed by equal channel angular pressing (ECAP). The HBC was reinforced using both Al₂O₃ and SiC nanoparticles. The microstructural examination showed that the introduced reinforcements broke down the round-like formed precipitates into needle-like shapes that enhanced the ductility. Furthermore, the grain size of the HBCs is highly reduced while increasing the number of ECAP passes due to dynamic recrystallization (DRX). The obtained mechanical properties showed that the optimal yield strength (YS), ultimate tensile strength (UTS), and elongation were observed in the AZ61 + 2%Al₂O₃ + 1%SiC hybrid composite after two passes of ECAP. The Hall[sbnd]Petch strengthening mechanism was primarily responsible for the improved mechanical properties of AZ61 HBC, jointly with the mutual contribution of several mechanisms, including the coefficient of thermal expansion, Orowan looping, and load transfer mechanisms.

Original language	English
Article number	104974
Journal	Materials Today Communications
Volume	34
DOIs	https://doi.org/10.1016/j.mtcomm.2022.104974
State	Published - Mar 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2022 Elsevier Ltd

Funding

The authors would like to thank the Ministry of Science and Technology , Republic of China (Taiwan), Contract Number: MOST 109–2224- E-011–002 , for their support of this research. The authors would like to thank the Ministry of Science and Technology, Republic of China (Taiwan), Contract Number: MOST 109–2224- E-011–002, for their support of this research.

Funders	Funder number
Ministry of Science and Technology , Republic of China (Taiwan)	MOST 109–2224- E-011–002
Ministry of Science and Technology, Republic of China (Taiwan)

Keywords

AZ61 Mg alloy
Equal channel angular pressing
Hybrid composites
Mechanical properties
Microstructure
Nanoparticles

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10.1016/j.mtcomm.2022.104974

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title = "Effect of equal channel angular pressing on the mechanical properties of homogenized hybrid AZ61 magnesium composites",

abstract = "This study addressed the development and investigation of an AZ61 hybrid composite (HBC) fabricated by the stir casting method followed by equal channel angular pressing (ECAP). The HBC was reinforced using both Al2O3 and SiC nanoparticles. The microstructural examination showed that the introduced reinforcements broke down the round-like formed precipitates into needle-like shapes that enhanced the ductility. Furthermore, the grain size of the HBCs is highly reduced while increasing the number of ECAP passes due to dynamic recrystallization (DRX). The obtained mechanical properties showed that the optimal yield strength (YS), ultimate tensile strength (UTS), and elongation were observed in the AZ61 + 2%Al2O3 + 1%SiC hybrid composite after two passes of ECAP. The Hall[sbnd]Petch strengthening mechanism was primarily responsible for the improved mechanical properties of AZ61 HBC, jointly with the mutual contribution of several mechanisms, including the coefficient of thermal expansion, Orowan looping, and load transfer mechanisms.",

keywords = "AZ61 Mg alloy, Equal channel angular pressing, Hybrid composites, Mechanical properties, Microstructure, Nanoparticles",

author = "Huang, {Song Jeng} and Murugan Subramani and Konstantin Borodianskiy and Immanuel, {Philip Nathaniel} and Chiang, {Chao Ching}",

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doi = "10.1016/j.mtcomm.2022.104974",

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AU - Huang, Song Jeng

AU - Subramani, Murugan

AU - Borodianskiy, Konstantin

AU - Immanuel, Philip Nathaniel

AU - Chiang, Chao Ching

PY - 2023/3

Y1 - 2023/3

N2 - This study addressed the development and investigation of an AZ61 hybrid composite (HBC) fabricated by the stir casting method followed by equal channel angular pressing (ECAP). The HBC was reinforced using both Al2O3 and SiC nanoparticles. The microstructural examination showed that the introduced reinforcements broke down the round-like formed precipitates into needle-like shapes that enhanced the ductility. Furthermore, the grain size of the HBCs is highly reduced while increasing the number of ECAP passes due to dynamic recrystallization (DRX). The obtained mechanical properties showed that the optimal yield strength (YS), ultimate tensile strength (UTS), and elongation were observed in the AZ61 + 2%Al2O3 + 1%SiC hybrid composite after two passes of ECAP. The Hall[sbnd]Petch strengthening mechanism was primarily responsible for the improved mechanical properties of AZ61 HBC, jointly with the mutual contribution of several mechanisms, including the coefficient of thermal expansion, Orowan looping, and load transfer mechanisms.

AB - This study addressed the development and investigation of an AZ61 hybrid composite (HBC) fabricated by the stir casting method followed by equal channel angular pressing (ECAP). The HBC was reinforced using both Al2O3 and SiC nanoparticles. The microstructural examination showed that the introduced reinforcements broke down the round-like formed precipitates into needle-like shapes that enhanced the ductility. Furthermore, the grain size of the HBCs is highly reduced while increasing the number of ECAP passes due to dynamic recrystallization (DRX). The obtained mechanical properties showed that the optimal yield strength (YS), ultimate tensile strength (UTS), and elongation were observed in the AZ61 + 2%Al2O3 + 1%SiC hybrid composite after two passes of ECAP. The Hall[sbnd]Petch strengthening mechanism was primarily responsible for the improved mechanical properties of AZ61 HBC, jointly with the mutual contribution of several mechanisms, including the coefficient of thermal expansion, Orowan looping, and load transfer mechanisms.

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KW - Equal channel angular pressing

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Effect of equal channel angular pressing on the mechanical properties of homogenized hybrid AZ61 magnesium composites

Abstract

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Keywords

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