Autor: |
I. Ferretto, D. Kim, M. Mohri, E. Ghafoori, W.J. Lee, C. Leinenbach |
Jazyk: |
angličtina |
Rok vydání: |
2022 |
Předmět: |
|
Zdroj: |
Journal of Materials Research and Technology, Vol 20, Iss , Pp 3969-3984 (2022) |
Druh dokumentu: |
article |
ISSN: |
2238-7854 |
DOI: |
10.1016/j.jmrt.2022.08.143 |
Popis: |
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%. |
Databáze: |
Directory of Open Access Journals |
Externí odkaz: |
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