Datum
2019-05-28Autor
Vollmer, MalteArold, TizianKriegel, Mario J.Klemm, VolkerDegener, SebastianFreudenberger, JensNiendorf, ThomasSchlagwort
620 Ingenieurwissenschaften 660 Chemische Verfahrenstechnik, Technische Chemie KornwachstumMechanische EigenschaftMemory-LegierungEisenMetallMetadata
Zur Langanzeige
Aufsatz
Promoting abnormal grain growth in Fe-based shape memory alloys through compositional adjustments
Zusammenfassung
Iron-based shape memory alloys are promising candidates for large-scale structural applications due to their cost efficiency and the possibility of using conventional processing routes from the steel industry. However, recently developed alloy systems like Fe–Mn–Al–Ni suffer from low recoverability if the grains do not completely cover the sample cross-section. To overcome this issue, here we show that small amounts of titanium added to Fe–Mn–Al–Ni significantly enhance abnormal grain growth due to a considerable refinement of the subgrain sizes, whereas small amounts of chromium lead to a strong inhibition of abnormal grain growth. By tailoring and promoting abnormal grain growth it is possible to obtain very large single crystalline bars. We expect that the findings of the present study regarding the elementary mechanisms of abnormal grain growth and the role of chemical composition can be applied to tailor other alloy systems with similar microstructural features.
Zitierform
In: Nature Communications Volume 10 (2019-05-28) eissn:2041-1723Zitieren
@article{doi:10.17170/kobra-202304207857,
author={Vollmer, Malte and Arold, Tizian and Kriegel, Mario J. and Klemm, Volker and Degener, Sebastian and Freudenberger, Jens and Niendorf, Thomas},
title={Promoting abnormal grain growth in Fe-based shape memory alloys through compositional adjustments},
journal={Nature Communications},
year={2019}
}
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2023-04-26T09:55:27Z 2023-04-26T09:55:27Z 2019-05-28 doi:10.17170/kobra-202304207857 http://hdl.handle.net/123456789/14633 eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ mechanical properties metals and alloys 620 660 Promoting abnormal grain growth in Fe-based shape memory alloys through compositional adjustments Aufsatz Iron-based shape memory alloys are promising candidates for large-scale structural applications due to their cost efficiency and the possibility of using conventional processing routes from the steel industry. However, recently developed alloy systems like Fe–Mn–Al–Ni suffer from low recoverability if the grains do not completely cover the sample cross-section. To overcome this issue, here we show that small amounts of titanium added to Fe–Mn–Al–Ni significantly enhance abnormal grain growth due to a considerable refinement of the subgrain sizes, whereas small amounts of chromium lead to a strong inhibition of abnormal grain growth. By tailoring and promoting abnormal grain growth it is possible to obtain very large single crystalline bars. We expect that the findings of the present study regarding the elementary mechanisms of abnormal grain growth and the role of chemical composition can be applied to tailor other alloy systems with similar microstructural features. open access Vollmer, Malte Arold, Tizian Kriegel, Mario J. Klemm, Volker Degener, Sebastian Freudenberger, Jens Niendorf, Thomas doi:10.1038/s41467-019-10308-8 Kornwachstum Mechanische Eigenschaft Memory-Legierung Eisen Metall publishedVersion eissn:2041-1723 Nature Communications Volume 10 false 2337
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