Details
| Original language | English |
|---|---|
| Pages (from-to) | 3969-3984 |
| Number of pages | 16 |
| Journal | Journal of Materials Research and Technology |
| Volume | 20 |
| Publication status | Published - Sept 2022 |
| Externally published | Yes |
Abstract
In the present work, a Fe-Mn-Si shape memory alloy containing V and C has been fabricated by laser powder bed fusion for the first time. A pronounced pseudo-elasticity compared to a similar alloy but conventionally manufactured is achieved after aging treatment, as a result of the fine microstructure developed during the process and of the evaporation of Mn. The formation of high precipitate densities is also responsible for the improved thermo-mechanical properties. The size and density of precipitates significantly vary with aging conditions and account for important variation in material's performance. A maximum pseudo-elasticity is observed in samples aged at 750 °C for 6 h. The recovery strain upon unloading exceeds the values achieved in the conventionally manufactured alloy by more than 50%.
Keywords
- Laser powder bed fusion, Microstructure, Precipitation, Pseudo-elasticity, Shape memory alloys
ASJC Scopus subject areas
- Materials Science(all)
- Ceramics and Composites
- Materials Science(all)
- Biomaterials
- Materials Science(all)
- Surfaces, Coatings and Films
- Materials Science(all)
- Metals and Alloys
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In: Journal of Materials Research and Technology, Vol. 20, 09.2022, p. 3969-3984.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Shape recovery performance of a (V, C)-containing Fe-Mn-Si-Ni-Cr shape memory alloy fabricated by laser powder bed fusion
AU - Ferretto, I.
AU - Kim, D.
AU - Mohri, M.
AU - Ghafoori, E.
AU - Lee, W. J.
AU - Leinenbach, C.
N1 - Funding Information: The work is funded by the Swiss National Science Foundation (SNSF) through the project IZKSZ2_188290/1 and the National Research Foundation of Korea (NRF) under the grant number 2019K1A3A1A14065695 , which is gratefully acknowledged. The authors thank Boehler Edelstahl for providing the alloy powder. Publisher Copyright: © 2022 The Author(s).
PY - 2022/9
Y1 - 2022/9
N2 - In the present work, a Fe-Mn-Si shape memory alloy containing V and C has been fabricated by laser powder bed fusion for the first time. A pronounced pseudo-elasticity compared to a similar alloy but conventionally manufactured is achieved after aging treatment, as a result of the fine microstructure developed during the process and of the evaporation of Mn. The formation of high precipitate densities is also responsible for the improved thermo-mechanical properties. The size and density of precipitates significantly vary with aging conditions and account for important variation in material's performance. A maximum pseudo-elasticity is observed in samples aged at 750 °C for 6 h. The recovery strain upon unloading exceeds the values achieved in the conventionally manufactured alloy by more than 50%.
AB - In the present work, a Fe-Mn-Si shape memory alloy containing V and C has been fabricated by laser powder bed fusion for the first time. A pronounced pseudo-elasticity compared to a similar alloy but conventionally manufactured is achieved after aging treatment, as a result of the fine microstructure developed during the process and of the evaporation of Mn. The formation of high precipitate densities is also responsible for the improved thermo-mechanical properties. The size and density of precipitates significantly vary with aging conditions and account for important variation in material's performance. A maximum pseudo-elasticity is observed in samples aged at 750 °C for 6 h. The recovery strain upon unloading exceeds the values achieved in the conventionally manufactured alloy by more than 50%.
KW - Laser powder bed fusion
KW - Microstructure
KW - Precipitation
KW - Pseudo-elasticity
KW - Shape memory alloys
UR - http://www.scopus.com/inward/record.url?scp=85140079731&partnerID=8YFLogxK
U2 - 10.1016/j.jmrt.2022.08.143
DO - 10.1016/j.jmrt.2022.08.143
M3 - Article
AN - SCOPUS:85140079731
VL - 20
SP - 3969
EP - 3984
JO - Journal of Materials Research and Technology
JF - Journal of Materials Research and Technology
SN - 2238-7854
ER -