Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 84-94 |
| Seitenumfang | 11 |
| Fachzeitschrift | Shape Memory and Superelasticity |
| Jahrgang | 5 |
| Ausgabenummer | 1 |
| Frühes Online-Datum | 18 Jan. 2019 |
| Publikationsstatus | Veröffentlicht - 15 März 2019 |
| Veranstaltung | 2nd International Conference on High Temperature Shape Memory Alloys - Irsee, Deutschland Dauer: 15 Mai 2018 → 18 Mai 2018 |
Abstract
Co–Ni–Ga alloys represent a new class of promising high-temperature shape memory alloys allowing realization of functional components for applications at elevated temperatures. Single crystals show a fully reversible pseudoelastic response at temperatures up to 500 °C. However, for most industrial applications, the application of polycrystalline material is needed. Polycrystalline Co–Ni–Ga alloys suffer from the anisotropic properties inherent to shape memory alloys, i.e., a strong orientation dependence of transformation strains, and therefore, are prone to intergranular fracture. This drawback can be curtailed by using appropriately textured material with a favorable grain-boundary orientation distribution. The current study discusses the impact of a hot-extrusion process on microstructural evolution and functional properties of polycrystalline Co–Ni–Ga high-temperature shape memory alloys paving the way to their robust application.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
- Ingenieurwesen (insg.)
- Werkstoffmechanik
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in: Shape Memory and Superelasticity, Jahrgang 5, Nr. 1, 15.03.2019, S. 84-94.
Publikation: Beitrag in Fachzeitschrift › Konferenzaufsatz in Fachzeitschrift › Forschung › Peer-Review
}
TY - JOUR
T1 - Tailoring the Microstructure in Polycrystalline Co–Ni–Ga High-Temperature Shape Memory Alloys by Hot Extrusion
AU - Karsten, E.
AU - Gerstein, G.
AU - Golovko, O.
AU - Dalinger, A.
AU - Lauhoff, C.
AU - Krooss, P.
AU - Niendorf, T.
AU - Samsonenko, A.
AU - Maier, H. J.
N1 - Funding Information: Financial support by the Deutsche Forschungsgemeinschaft (DFG) within the Research Unit Program “Hochtemperatur-Formgedächtnislegierungen” (Project Number 200999873; Grant Nos. NI1327/3-2 and MA1175/34-2) is gratefully acknowledged.
PY - 2019/3/15
Y1 - 2019/3/15
N2 - Co–Ni–Ga alloys represent a new class of promising high-temperature shape memory alloys allowing realization of functional components for applications at elevated temperatures. Single crystals show a fully reversible pseudoelastic response at temperatures up to 500 °C. However, for most industrial applications, the application of polycrystalline material is needed. Polycrystalline Co–Ni–Ga alloys suffer from the anisotropic properties inherent to shape memory alloys, i.e., a strong orientation dependence of transformation strains, and therefore, are prone to intergranular fracture. This drawback can be curtailed by using appropriately textured material with a favorable grain-boundary orientation distribution. The current study discusses the impact of a hot-extrusion process on microstructural evolution and functional properties of polycrystalline Co–Ni–Ga high-temperature shape memory alloys paving the way to their robust application.
AB - Co–Ni–Ga alloys represent a new class of promising high-temperature shape memory alloys allowing realization of functional components for applications at elevated temperatures. Single crystals show a fully reversible pseudoelastic response at temperatures up to 500 °C. However, for most industrial applications, the application of polycrystalline material is needed. Polycrystalline Co–Ni–Ga alloys suffer from the anisotropic properties inherent to shape memory alloys, i.e., a strong orientation dependence of transformation strains, and therefore, are prone to intergranular fracture. This drawback can be curtailed by using appropriately textured material with a favorable grain-boundary orientation distribution. The current study discusses the impact of a hot-extrusion process on microstructural evolution and functional properties of polycrystalline Co–Ni–Ga high-temperature shape memory alloys paving the way to their robust application.
KW - Abnormal grain growth
KW - High-temperature shape memory alloy
KW - Hot extrusion
KW - Pseudoelasticity
UR - http://www.scopus.com/inward/record.url?scp=85070863320&partnerID=8YFLogxK
U2 - 10.1007/s40830-019-00208-7
DO - 10.1007/s40830-019-00208-7
M3 - Conference article
AN - SCOPUS:85070863320
VL - 5
SP - 84
EP - 94
JO - Shape Memory and Superelasticity
JF - Shape Memory and Superelasticity
SN - 2199-384X
IS - 1
T2 - 2nd International Conference on High Temperature Shape Memory Alloys
Y2 - 15 May 2018 through 18 May 2018
ER -