Details
| Original language | English |
|---|---|
| Pages (from-to) | 6982-6991 |
| Number of pages | 10 |
| Journal | Journal of Materials Research and Technology |
| Volume | 24 |
| Early online date | 2 May 2023 |
| Publication status | Published - May 2023 |
Abstract
In the present study the structural and functional properties of Fe–Mn–Al–Ni shape memory alloy sheets produced on an industrial process route focusing on hot rolling were investigated. The as-processed condition is characterized by a high fraction of the non-transforming γ-phase, which ensures good workability, but is associated with poor superelasticity. The alloy shows good structural properties with a yield strength of about 600 MPa, which is well above the usual transformation stress related to the martensitic phase transformation for the investigated alloy composition. After solution annealing, a microstructure showing no preferred orientation being characterized by distinctly larger grains is present. The results obtained reveal that the previous thermo-mechanical processing had no impact on the subsequent texture, however, provided a sufficient amount of driving force for abnormal grain growth. Imposed by a cyclic heat treatment, oligocrystalline structures with grain sizes above 10 mm can be achieved in the industrially processed material, which show superelastic properties similar to material processed in small batches in the laboratory.
Keywords
- Abnormal grain growth, FeMnAlNi, Industrial process route, Martensitic phase transformation, Mechanical properties, Shape memory alloy
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. 24, 05.2023, p. 6982-6991.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Structural and superelastic properties of Fe–Mn–Al–Ni shape memory alloy sheets produced on industrial process routes by hot rolling
AU - Bauer, André
AU - Vollmer, Malte
AU - Viebranz, Vincent Fabian
AU - Maier, Hans Jürgen
AU - Niendorf, Thomas
N1 - Funding Information: Financial support by Deutsche Forschungsgemeinschaft (project number 401738767) is gratefully acknowledged. The material was processed by thyssenkrupp Steel Europe AG (Duisburg, Germany).
PY - 2023/5
Y1 - 2023/5
N2 - In the present study the structural and functional properties of Fe–Mn–Al–Ni shape memory alloy sheets produced on an industrial process route focusing on hot rolling were investigated. The as-processed condition is characterized by a high fraction of the non-transforming γ-phase, which ensures good workability, but is associated with poor superelasticity. The alloy shows good structural properties with a yield strength of about 600 MPa, which is well above the usual transformation stress related to the martensitic phase transformation for the investigated alloy composition. After solution annealing, a microstructure showing no preferred orientation being characterized by distinctly larger grains is present. The results obtained reveal that the previous thermo-mechanical processing had no impact on the subsequent texture, however, provided a sufficient amount of driving force for abnormal grain growth. Imposed by a cyclic heat treatment, oligocrystalline structures with grain sizes above 10 mm can be achieved in the industrially processed material, which show superelastic properties similar to material processed in small batches in the laboratory.
AB - In the present study the structural and functional properties of Fe–Mn–Al–Ni shape memory alloy sheets produced on an industrial process route focusing on hot rolling were investigated. The as-processed condition is characterized by a high fraction of the non-transforming γ-phase, which ensures good workability, but is associated with poor superelasticity. The alloy shows good structural properties with a yield strength of about 600 MPa, which is well above the usual transformation stress related to the martensitic phase transformation for the investigated alloy composition. After solution annealing, a microstructure showing no preferred orientation being characterized by distinctly larger grains is present. The results obtained reveal that the previous thermo-mechanical processing had no impact on the subsequent texture, however, provided a sufficient amount of driving force for abnormal grain growth. Imposed by a cyclic heat treatment, oligocrystalline structures with grain sizes above 10 mm can be achieved in the industrially processed material, which show superelastic properties similar to material processed in small batches in the laboratory.
KW - Abnormal grain growth
KW - FeMnAlNi
KW - Industrial process route
KW - Martensitic phase transformation
KW - Mechanical properties
KW - Shape memory alloy
UR - http://www.scopus.com/inward/record.url?scp=85158842070&partnerID=8YFLogxK
U2 - 10.1016/j.jmrt.2023.04.260
DO - 10.1016/j.jmrt.2023.04.260
M3 - Article
AN - SCOPUS:85158842070
VL - 24
SP - 6982
EP - 6991
JO - Journal of Materials Research and Technology
JF - Journal of Materials Research and Technology
SN - 2238-7854
ER -