Elucidation of formation and transformation mechanisms of Ca-rich Laves phase in Mg-Al-Ca-Mn alloys

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Elucidation of formation and transformation mechanisms of Ca-rich Laves phase in Mg-Al-Ca-Mn alloys. / LI, Jiehua; Zhou, Xuyang ; Breen, Andrew et al.

In: Journal of alloys and compounds, Vol. 928.2022, No. 20 December, 167177, 20.12.2022, p. 1-12.

Research output: Contribution to journalArticleResearchpeer-review

Harvard

LI, J, Zhou, X, Breen, A, Peng, Z, Su, J, Kürnsteiner, P, Correa, MJD, Chwałek, ML, Wang, H, Holec, D, Mayer, J & Dehm, G 2022, 'Elucidation of formation and transformation mechanisms of Ca-rich Laves phase in Mg-Al-Ca-Mn alloys', Journal of alloys and compounds, vol. 928.2022, no. 20 December, 167177, pp. 1-12. https://doi.org/10.1016/j.jallcom.2022.167177

APA

LI, J., Zhou, X., Breen, A., Peng, Z., Su, J., Kürnsteiner, P., Correa, M. J. D., Chwałek, M. L., Wang, H., Holec, D., Mayer, J., & Dehm, G. (2022). Elucidation of formation and transformation mechanisms of Ca-rich Laves phase in Mg-Al-Ca-Mn alloys. Journal of alloys and compounds, 928.2022(20 December), 1-12. [167177]. https://doi.org/10.1016/j.jallcom.2022.167177

Vancouver

LI J, Zhou X, Breen A, Peng Z, Su J, Kürnsteiner P et al. Elucidation of formation and transformation mechanisms of Ca-rich Laves phase in Mg-Al-Ca-Mn alloys. Journal of alloys and compounds. 2022 Dec 20;928.2022(20 December):1-12. 167177. Epub 2022 Sep 15. doi: 10.1016/j.jallcom.2022.167177

Author

LI, Jiehua ; Zhou, Xuyang ; Breen, Andrew et al. / Elucidation of formation and transformation mechanisms of Ca-rich Laves phase in Mg-Al-Ca-Mn alloys. In: Journal of alloys and compounds. 2022 ; Vol. 928.2022, No. 20 December. pp. 1-12.

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@article{c473ae8f5b1846db9fb35908cc175f7a,
title = "Elucidation of formation and transformation mechanisms of Ca-rich Laves phase in Mg-Al-Ca-Mn alloys",
abstract = "The formation of thermally stable intermetallic phases plays a key role to enable high temperature applications for Mg alloys. In the ductile Mg-Al-Ca system, Ca-rich Laves phases are expected to be crucial for improving high temperature mechanical properties. However, the formation mechanisms of Ca-rich Laves phases are still unresolved. Here, we report atomic-scale experiments and simulations on transformation of Ca-rich Laves phases and formation of Ca-rich clusters as well as Ca-segregation behaviour in Mg-Al-Ca-Mn alloys in three conditions: as-cast, homogenised (500 °C, 20 h), and rolled (350 °C). The formation mechanisms of C36 Laves phase and Mg-rich particles (eutectic Mg) within C36 Laves phase were attributed to a divorced eutectic reaction. The transformation mechanisms from C36 to C15 Laves phase were revealed and discussed in terms of Mg out-diffusion of C36 Laves phase, the partitioning of Al into C36 Laves phase and the change of stacking sequences. The combined atomic-scale experimental and simulation investigation reveals complex interactions among various Ca-rich Laves phases in Mg-Al-Ca-Mn alloys.",
author = "Jiehua LI and Xuyang Zhou and Andrew Breen and Zirong Peng and Jing Su and Philipp K{\"u}rnsteiner and Correa, {Maria Jazmin Duarte} and Chwa{\l}ek, {Marta Lipi{\'n}ska} and Huiyuan Wang and David Holec and Joachim Mayer and Gerhard Dehm",
note = "Publisher Copyright: {\textcopyright} 2022 The Author(s)",
year = "2022",
month = dec,
day = "20",
doi = "10.1016/j.jallcom.2022.167177",
language = "English",
volume = "928.2022",
pages = "1--12",
journal = "Journal of alloys and compounds",
issn = "0925-8388",
publisher = "Elsevier",
number = "20 December",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Elucidation of formation and transformation mechanisms of Ca-rich Laves phase in Mg-Al-Ca-Mn alloys

AU - LI, Jiehua

AU - Zhou, Xuyang

AU - Breen, Andrew

AU - Peng, Zirong

AU - Su, Jing

AU - Kürnsteiner, Philipp

AU - Correa, Maria Jazmin Duarte

AU - Chwałek, Marta Lipińska

AU - Wang, Huiyuan

AU - Holec, David

AU - Mayer, Joachim

AU - Dehm, Gerhard

N1 - Publisher Copyright: © 2022 The Author(s)

PY - 2022/12/20

Y1 - 2022/12/20

N2 - The formation of thermally stable intermetallic phases plays a key role to enable high temperature applications for Mg alloys. In the ductile Mg-Al-Ca system, Ca-rich Laves phases are expected to be crucial for improving high temperature mechanical properties. However, the formation mechanisms of Ca-rich Laves phases are still unresolved. Here, we report atomic-scale experiments and simulations on transformation of Ca-rich Laves phases and formation of Ca-rich clusters as well as Ca-segregation behaviour in Mg-Al-Ca-Mn alloys in three conditions: as-cast, homogenised (500 °C, 20 h), and rolled (350 °C). The formation mechanisms of C36 Laves phase and Mg-rich particles (eutectic Mg) within C36 Laves phase were attributed to a divorced eutectic reaction. The transformation mechanisms from C36 to C15 Laves phase were revealed and discussed in terms of Mg out-diffusion of C36 Laves phase, the partitioning of Al into C36 Laves phase and the change of stacking sequences. The combined atomic-scale experimental and simulation investigation reveals complex interactions among various Ca-rich Laves phases in Mg-Al-Ca-Mn alloys.

AB - The formation of thermally stable intermetallic phases plays a key role to enable high temperature applications for Mg alloys. In the ductile Mg-Al-Ca system, Ca-rich Laves phases are expected to be crucial for improving high temperature mechanical properties. However, the formation mechanisms of Ca-rich Laves phases are still unresolved. Here, we report atomic-scale experiments and simulations on transformation of Ca-rich Laves phases and formation of Ca-rich clusters as well as Ca-segregation behaviour in Mg-Al-Ca-Mn alloys in three conditions: as-cast, homogenised (500 °C, 20 h), and rolled (350 °C). The formation mechanisms of C36 Laves phase and Mg-rich particles (eutectic Mg) within C36 Laves phase were attributed to a divorced eutectic reaction. The transformation mechanisms from C36 to C15 Laves phase were revealed and discussed in terms of Mg out-diffusion of C36 Laves phase, the partitioning of Al into C36 Laves phase and the change of stacking sequences. The combined atomic-scale experimental and simulation investigation reveals complex interactions among various Ca-rich Laves phases in Mg-Al-Ca-Mn alloys.

UR - http://www.scopus.com/inward/record.url?scp=85138020727&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2022.167177

DO - 10.1016/j.jallcom.2022.167177

M3 - Article

VL - 928.2022

SP - 1

EP - 12

JO - Journal of alloys and compounds

JF - Journal of alloys and compounds

SN - 0925-8388

IS - 20 December

M1 - 167177

ER -