Phase stability and formation in Mg–Gd–Zn alloys—key data for ICME of Mg alloys

Rainer Schmid-Fetzer; Joachim Gröbner; Suming Zhu; Jian Feng Nie; Mark A. Gibson

doi:10.1007/978-3-319-52392-7_52

Phase stability and formation in Mg–Gd–Zn alloys—key data for ICME of Mg alloys

Rainer Schmid-Fetzer, Joachim Gröbner, Suming Zhu, Jian Feng Nie, Mark A. Gibson

Materials Science & Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

Abstract

Thermodynamic databases of multicomponent alloy systems are the indispensable basis to apply and develop ICME of Mg alloys. Among the multicomponent Mg alloys with rare earths (RE) and Zn the Mg–Gd–Zn system is found to be a prime example of complex phase formation, both under stable and metastable conditions. This alloy system was studied by a combination of dedicated experiments and thermodynamic modeling. Two metastable phases, I and H2, have been identified in as-cast Mg-rich Mg–Gd–Zn alloys by TEM characterization. Quantitative thermodynamic descriptions of the metastable Mg–Gd–Zn phases and metastable phase diagrams are developed, embedded in a complete Calphad modeling of all stable phases. Dedicated thermodynamic calculations using constrained Scheil solidification simulation reveal conditions for I and H2 phase formation and transformation.

Original language	English
Title of host publication	Magnesium Technology 2017
Editors	Neale R. Neelameggham, Alok Singh, Kiran N. Solanki, Dmytro Orlov
Publisher	Springer
Pages	365-371
Number of pages	7
ISBN (Print)	9783319523910
DOIs	https://doi.org/10.1007/978-3-319-52392-7_52
Publication status	Published - 2017
Event	Magnesium Technology Symposium 2017 - San Diego, United States of America Duration: 26 Feb 2017 → 2 Mar 2017 https://link.springer.com/book/10.1007/978-3-319-52392-7 (Proceedings)

Publication series

Name	Minerals, Metals and Materials Series
Volume	Part F8
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	Magnesium Technology Symposium 2017
Country/Territory	United States of America
City	San Diego
Period	26/02/17 → 2/03/17
Internet address	https://link.springer.com/book/10.1007/978-3-319-52392-7 (Proceedings)

Keywords

Constrained scheil simulation
Magnesium alloys
Stable and metastable phases
Thermodynamics

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10.1007/978-3-319-52392-7_52

Cite this

Schmid-Fetzer, R., Gröbner, J., Zhu, S., Nie, J. F., & Gibson, M. A. (2017). Phase stability and formation in Mg–Gd–Zn alloys—key data for ICME of Mg alloys. In N. R. Neelameggham, A. Singh, K. N. Solanki, & D. Orlov (Eds.), Magnesium Technology 2017 (pp. 365-371). (Minerals, Metals and Materials Series; Vol. Part F8). Springer. https://doi.org/10.1007/978-3-319-52392-7_52

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title = "Phase stability and formation in Mg–Gd–Zn alloys—key data for ICME of Mg alloys",

abstract = "Thermodynamic databases of multicomponent alloy systems are the indispensable basis to apply and develop ICME of Mg alloys. Among the multicomponent Mg alloys with rare earths (RE) and Zn the Mg–Gd–Zn system is found to be a prime example of complex phase formation, both under stable and metastable conditions. This alloy system was studied by a combination of dedicated experiments and thermodynamic modeling. Two metastable phases, I and H2, have been identified in as-cast Mg-rich Mg–Gd–Zn alloys by TEM characterization. Quantitative thermodynamic descriptions of the metastable Mg–Gd–Zn phases and metastable phase diagrams are developed, embedded in a complete Calphad modeling of all stable phases. Dedicated thermodynamic calculations using constrained Scheil solidification simulation reveal conditions for I and H2 phase formation and transformation.",

keywords = "Constrained scheil simulation, Magnesium alloys, Stable and metastable phases, Thermodynamics",

author = "Rainer Schmid-Fetzer and Joachim Gr{\"o}bner and Suming Zhu and Nie, {Jian Feng} and Gibson, {Mark A.}",

year = "2017",

doi = "10.1007/978-3-319-52392-7_52",

language = "English",

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series = "Minerals, Metals and Materials Series",

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pages = "365--371",

editor = "Neelameggham, {Neale R.} and Alok Singh and Solanki, {Kiran N.} and Dmytro Orlov",

booktitle = "Magnesium Technology 2017",

note = "Magnesium Technology Symposium 2017 ; Conference date: 26-02-2017 Through 02-03-2017",

url = "https://link.springer.com/book/10.1007/978-3-319-52392-7",

}

Schmid-Fetzer, R, Gröbner, J, Zhu, S, Nie, JF & Gibson, MA 2017, Phase stability and formation in Mg–Gd–Zn alloys—key data for ICME of Mg alloys. in NR Neelameggham, A Singh, KN Solanki & D Orlov (eds), Magnesium Technology 2017. Minerals, Metals and Materials Series, vol. Part F8, Springer, pp. 365-371, Magnesium Technology Symposium 2017, San Diego, California, United States of America, 26/02/17. https://doi.org/10.1007/978-3-319-52392-7_52

Phase stability and formation in Mg–Gd–Zn alloys—key data for ICME of Mg alloys. / Schmid-Fetzer, Rainer; Gröbner, Joachim; Zhu, Suming et al.
Magnesium Technology 2017. ed. / Neale R. Neelameggham; Alok Singh; Kiran N. Solanki; Dmytro Orlov. Springer, 2017. p. 365-371 (Minerals, Metals and Materials Series; Vol. Part F8).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

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T1 - Phase stability and formation in Mg–Gd–Zn alloys—key data for ICME of Mg alloys

AU - Schmid-Fetzer, Rainer

AU - Gröbner, Joachim

AU - Zhu, Suming

AU - Nie, Jian Feng

AU - Gibson, Mark A.

PY - 2017

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N2 - Thermodynamic databases of multicomponent alloy systems are the indispensable basis to apply and develop ICME of Mg alloys. Among the multicomponent Mg alloys with rare earths (RE) and Zn the Mg–Gd–Zn system is found to be a prime example of complex phase formation, both under stable and metastable conditions. This alloy system was studied by a combination of dedicated experiments and thermodynamic modeling. Two metastable phases, I and H2, have been identified in as-cast Mg-rich Mg–Gd–Zn alloys by TEM characterization. Quantitative thermodynamic descriptions of the metastable Mg–Gd–Zn phases and metastable phase diagrams are developed, embedded in a complete Calphad modeling of all stable phases. Dedicated thermodynamic calculations using constrained Scheil solidification simulation reveal conditions for I and H2 phase formation and transformation.

AB - Thermodynamic databases of multicomponent alloy systems are the indispensable basis to apply and develop ICME of Mg alloys. Among the multicomponent Mg alloys with rare earths (RE) and Zn the Mg–Gd–Zn system is found to be a prime example of complex phase formation, both under stable and metastable conditions. This alloy system was studied by a combination of dedicated experiments and thermodynamic modeling. Two metastable phases, I and H2, have been identified in as-cast Mg-rich Mg–Gd–Zn alloys by TEM characterization. Quantitative thermodynamic descriptions of the metastable Mg–Gd–Zn phases and metastable phase diagrams are developed, embedded in a complete Calphad modeling of all stable phases. Dedicated thermodynamic calculations using constrained Scheil solidification simulation reveal conditions for I and H2 phase formation and transformation.

KW - Constrained scheil simulation

KW - Magnesium alloys

KW - Stable and metastable phases

KW - Thermodynamics

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DO - 10.1007/978-3-319-52392-7_52

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SN - 9783319523910

T3 - Minerals, Metals and Materials Series

SP - 365

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BT - Magnesium Technology 2017

A2 - Neelameggham, Neale R.

A2 - Singh, Alok

A2 - Solanki, Kiran N.

A2 - Orlov, Dmytro

PB - Springer

T2 - Magnesium Technology Symposium 2017

Y2 - 26 February 2017 through 2 March 2017

ER -

Phase stability and formation in Mg–Gd–Zn alloys—key data for ICME of Mg alloys

Abstract

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Keywords

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