Strengthening and toughening behaviors of the Mg–9Al alloy containing oxygen atoms

Seung Won Kang; Dong Hyun Bae

doi:10.1007/978-3-319-72332-7_16

Strengthening and toughening behaviors of the Mg–9Al alloy containing oxygen atoms

Seung Won Kang, Dong Hyun Bae

Department of Materials Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

New Mg–O–9Al alloy has been developed by the dispersion of oxygen atoms in the Mg–9Al alloy in which oxygen atoms are supplied from the decomposition of TiO₂nanoparticles in the Mg–9Al alloy melt. The dissolved oxygen atoms expand the lattice structures of both α-Mg and β-phase, inducing the reduced mismatch distance between α-Mg and β-phase. Therefore, yield stress of the Mg–O–9Al alloy is 143 MPa, much higher than 110 MPa in the Mg–9Al alloy. Fracture toughness values of 10.39 MPa m^1/2and 12.86 MPa m^1/2for both the Mg–9Al and Mg–O–9Al alloys are also respectively obtained. The crack propagates along the weak interface of β-phase in the Mg–9Al alloy. On the other hand, the β-phase disturbs the crack propagation route in the Mg–O–9Al alloy, showing many broken β-phases. Therefore, the improved interfacial feature with an addition of dissolved oxygen atoms in the Mg–O–9Al alloy results in much enhanced mechanical properties.

Original language	English
Title of host publication	Magnesium Technology 2018
Editors	Kiran N. Solanki, Vineet Joshi, Neale R. Neelameggham, Dmytro Orlov
Publisher	Springer International Publishing
Pages	99-104
Number of pages	6
ISBN (Print)	9783319723310
DOIs	https://doi.org/10.1007/978-3-319-72332-7_16
Publication status	Published - 2018
Event	International Symposium on Magnesium Technology, 2018 - Phoenix, United States Duration: 2018 Mar 11 → 2018 Mar 15

Publication series

Name	Minerals, Metals and Materials Series
Volume	Part F7
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	International Symposium on Magnesium Technology, 2018
Country/Territory	United States
City	Phoenix
Period	18/3/11 → 18/3/15

Bibliographical note

Funding Information:
Acknowledgements The authors would like to take this opportunity to thank the National Research Foundation of Korea (NRF) (No. 2017R 1A2B2007062).

Publisher Copyright:
© The Minerals, Metals & Materials Society 2018.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Energy Engineering and Power Technology
Mechanics of Materials
Metals and Alloys
Materials Chemistry

Access to Document

10.1007/978-3-319-72332-7_16

Cite this

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title = "Strengthening and toughening behaviors of the Mg–9Al alloy containing oxygen atoms",

abstract = "New Mg–O–9Al alloy has been developed by the dispersion of oxygen atoms in the Mg–9Al alloy in which oxygen atoms are supplied from the decomposition of TiO2nanoparticles in the Mg–9Al alloy melt. The dissolved oxygen atoms expand the lattice structures of both α-Mg and β-phase, inducing the reduced mismatch distance between α-Mg and β-phase. Therefore, yield stress of the Mg–O–9Al alloy is 143 MPa, much higher than 110 MPa in the Mg–9Al alloy. Fracture toughness values of 10.39 MPa m1/2and 12.86 MPa m1/2for both the Mg–9Al and Mg–O–9Al alloys are also respectively obtained. The crack propagates along the weak interface of β-phase in the Mg–9Al alloy. On the other hand, the β-phase disturbs the crack propagation route in the Mg–O–9Al alloy, showing many broken β-phases. Therefore, the improved interfacial feature with an addition of dissolved oxygen atoms in the Mg–O–9Al alloy results in much enhanced mechanical properties.",

author = "Kang, {Seung Won} and Bae, {Dong Hyun}",

note = "Funding Information: Acknowledgements The authors would like to take this opportunity to thank the National Research Foundation of Korea (NRF) (No. 2017R 1A2B2007062). Publisher Copyright: {\textcopyright} The Minerals, Metals & Materials Society 2018.; International Symposium on Magnesium Technology, 2018 ; Conference date: 11-03-2018 Through 15-03-2018",

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Kang, SW & Bae, DH 2018, Strengthening and toughening behaviors of the Mg–9Al alloy containing oxygen atoms. in KN Solanki, V Joshi, NR Neelameggham & D Orlov (eds), Magnesium Technology 2018. Minerals, Metals and Materials Series, vol. Part F7, Springer International Publishing, pp. 99-104, International Symposium on Magnesium Technology, 2018, Phoenix, United States, 18/3/11. https://doi.org/10.1007/978-3-319-72332-7_16

Strengthening and toughening behaviors of the Mg–9Al alloy containing oxygen atoms. / Kang, Seung Won; Bae, Dong Hyun.
Magnesium Technology 2018. ed. / Kiran N. Solanki; Vineet Joshi; Neale R. Neelameggham; Dmytro Orlov. Springer International Publishing, 2018. p. 99-104 (Minerals, Metals and Materials Series; Vol. Part F7).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Strengthening and toughening behaviors of the Mg–9Al alloy containing oxygen atoms

AU - Kang, Seung Won

AU - Bae, Dong Hyun

N1 - Funding Information: Acknowledgements The authors would like to take this opportunity to thank the National Research Foundation of Korea (NRF) (No. 2017R 1A2B2007062). Publisher Copyright: © The Minerals, Metals & Materials Society 2018.

PY - 2018

Y1 - 2018

N2 - New Mg–O–9Al alloy has been developed by the dispersion of oxygen atoms in the Mg–9Al alloy in which oxygen atoms are supplied from the decomposition of TiO2nanoparticles in the Mg–9Al alloy melt. The dissolved oxygen atoms expand the lattice structures of both α-Mg and β-phase, inducing the reduced mismatch distance between α-Mg and β-phase. Therefore, yield stress of the Mg–O–9Al alloy is 143 MPa, much higher than 110 MPa in the Mg–9Al alloy. Fracture toughness values of 10.39 MPa m1/2and 12.86 MPa m1/2for both the Mg–9Al and Mg–O–9Al alloys are also respectively obtained. The crack propagates along the weak interface of β-phase in the Mg–9Al alloy. On the other hand, the β-phase disturbs the crack propagation route in the Mg–O–9Al alloy, showing many broken β-phases. Therefore, the improved interfacial feature with an addition of dissolved oxygen atoms in the Mg–O–9Al alloy results in much enhanced mechanical properties.

AB - New Mg–O–9Al alloy has been developed by the dispersion of oxygen atoms in the Mg–9Al alloy in which oxygen atoms are supplied from the decomposition of TiO2nanoparticles in the Mg–9Al alloy melt. The dissolved oxygen atoms expand the lattice structures of both α-Mg and β-phase, inducing the reduced mismatch distance between α-Mg and β-phase. Therefore, yield stress of the Mg–O–9Al alloy is 143 MPa, much higher than 110 MPa in the Mg–9Al alloy. Fracture toughness values of 10.39 MPa m1/2and 12.86 MPa m1/2for both the Mg–9Al and Mg–O–9Al alloys are also respectively obtained. The crack propagates along the weak interface of β-phase in the Mg–9Al alloy. On the other hand, the β-phase disturbs the crack propagation route in the Mg–O–9Al alloy, showing many broken β-phases. Therefore, the improved interfacial feature with an addition of dissolved oxygen atoms in the Mg–O–9Al alloy results in much enhanced mechanical properties.

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BT - Magnesium Technology 2018

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T2 - International Symposium on Magnesium Technology, 2018

Y2 - 11 March 2018 through 15 March 2018

ER -

Strengthening and toughening behaviors of the Mg–9Al alloy containing oxygen atoms

Abstract

Publication series

Conference

Bibliographical note

All Science Journal Classification (ASJC) codes

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