Details
| Original language | English |
|---|---|
| Pages (from-to) | 127-131 |
| Number of pages | 5 |
| Journal | Scripta materialia |
| Volume | 162 |
| Publication status | Published - 9 Nov 2018 |
Abstract
High-temperature shape memory alloys are promising candidates for actuation/damping applications at elevated temperatures. To account for pronounced instabilities at elevated temperatures of conventional alloys, novel alloy systems have been developed to address this issue. Yet, most systems suffer from high costs/limited formability. Bamboo-like microstructures have proven to provide for a suitable microstructural condition for superior performance in numerous alloys, however, robust processing of promising high-temperature shape memory alloys is challenging. The current study reports on a novel thermo-mechanical processing route allowing robust processing of hard to form Co-Ni-Ga shape memory alloys. This will assist to overcome a major roadblock towards widespread use of these materials.
Keywords
- Bamboo-like microstructure, Co-Ni-Ga, High-temperature shape memory alloys (HT-SMAs), Hot extrusion, Martensitic transformation
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Materials Science(all)
- Metals and Alloys
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In: Scripta materialia, Vol. 162, 09.11.2018, p. 127-131.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Direct microstructure design by hot extrusion
T2 - High-temperature shape memory alloys with bamboo-like microstructure
AU - Niendorf, T.
AU - Lauhoff, C.
AU - Karsten, E.
AU - Gerstein, G.
AU - Liehr, A.
AU - Krooß, P.
AU - Maier, H. J.
N1 - Funding Information: Financial support by Deutsche Forschungsgemeinschaft (DFG) within the Research Unit Program “Hochtemperatur-Formgedächtnislegierungen” (Project number. 200999873; grant nos. NI1327/3-2 and MA1175/61-2) is gratefully acknowledged. Funding Information: Financial support by Deutsche Forschungsgemeinschaft (DFG) within the Research Unit Program “Hochtemperatur-Formgedächtnislegierungen” (Project number. 200999873; grant nos. NI1327/3-2 and MA1175/61-2 ) is gratefully acknowledged. Publisher Copyright: © 2018 Copyright: Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/11/9
Y1 - 2018/11/9
N2 - High-temperature shape memory alloys are promising candidates for actuation/damping applications at elevated temperatures. To account for pronounced instabilities at elevated temperatures of conventional alloys, novel alloy systems have been developed to address this issue. Yet, most systems suffer from high costs/limited formability. Bamboo-like microstructures have proven to provide for a suitable microstructural condition for superior performance in numerous alloys, however, robust processing of promising high-temperature shape memory alloys is challenging. The current study reports on a novel thermo-mechanical processing route allowing robust processing of hard to form Co-Ni-Ga shape memory alloys. This will assist to overcome a major roadblock towards widespread use of these materials.
AB - High-temperature shape memory alloys are promising candidates for actuation/damping applications at elevated temperatures. To account for pronounced instabilities at elevated temperatures of conventional alloys, novel alloy systems have been developed to address this issue. Yet, most systems suffer from high costs/limited formability. Bamboo-like microstructures have proven to provide for a suitable microstructural condition for superior performance in numerous alloys, however, robust processing of promising high-temperature shape memory alloys is challenging. The current study reports on a novel thermo-mechanical processing route allowing robust processing of hard to form Co-Ni-Ga shape memory alloys. This will assist to overcome a major roadblock towards widespread use of these materials.
KW - Bamboo-like microstructure
KW - Co-Ni-Ga
KW - High-temperature shape memory alloys (HT-SMAs)
KW - Hot extrusion
KW - Martensitic transformation
UR - http://www.scopus.com/inward/record.url?scp=85056159094&partnerID=8YFLogxK
U2 - 10.1016/j.scriptamat.2018.10.051
DO - 10.1016/j.scriptamat.2018.10.051
M3 - Article
AN - SCOPUS:85056159094
VL - 162
SP - 127
EP - 131
JO - Scripta materialia
JF - Scripta materialia
SN - 1359-6462
ER -