Details
| Original language | English |
|---|---|
| Pages (from-to) | 360-368 |
| Number of pages | 9 |
| Journal | Shape Memory and Superelasticity |
| Volume | 4 |
| Issue number | 3 |
| Early online date | 7 Jun 2018 |
| Publication status | Published - Sept 2018 |
Abstract
The present study describes the development of shape memory alloys based on NiAl. Initially, this system was considered a promising but unsuccessful neighbour of NiTi. Later, however, shape memory alloys like CoNiAl or CoNiGa were developed that can be considered as NiAl derivatives and already demonstrated good mechanical properties. Yet, these alloys were still inferior to NiTi in most respects. Lately, using a multi-component approach, a CoNiCuAlGaIn high entropy intermetallic compound was developed from the NiAl prototype. This new alloy featured a B2 phase and a martensitic transformation along with a remarkable strength in the as-cast state. In the long-term, this new approach might led to a breakthrough for shape memory alloys in general.
Keywords
- Crystal structure, Functional fatigue, High entropy alloys, Intermetallics, Martensitic transformation, SMA
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
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In: Shape Memory and Superelasticity, Vol. 4, No. 3, 09.2018, p. 360-368.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Development of B2 Shape Memory Intermetallics Beyond NiAl, CoNiAl and CoNiGa
AU - Gerstein, G.
AU - Firstov, G. S.
AU - Kosorukova, T. A.
AU - Koval, Yu N.
AU - Maier, H. J.
N1 - Funding Information: G.S. Firstov acknowledges support by the DAAD scholarship (91657703) in the frame of the scholarship program “Research Stays for University Academics and Scientists, 2017”. G. Gerstein and H.J. Maier acknowledge financial support by the German Research Foundation (Grant No. MA1175/79-1).
PY - 2018/9
Y1 - 2018/9
N2 - The present study describes the development of shape memory alloys based on NiAl. Initially, this system was considered a promising but unsuccessful neighbour of NiTi. Later, however, shape memory alloys like CoNiAl or CoNiGa were developed that can be considered as NiAl derivatives and already demonstrated good mechanical properties. Yet, these alloys were still inferior to NiTi in most respects. Lately, using a multi-component approach, a CoNiCuAlGaIn high entropy intermetallic compound was developed from the NiAl prototype. This new alloy featured a B2 phase and a martensitic transformation along with a remarkable strength in the as-cast state. In the long-term, this new approach might led to a breakthrough for shape memory alloys in general.
AB - The present study describes the development of shape memory alloys based on NiAl. Initially, this system was considered a promising but unsuccessful neighbour of NiTi. Later, however, shape memory alloys like CoNiAl or CoNiGa were developed that can be considered as NiAl derivatives and already demonstrated good mechanical properties. Yet, these alloys were still inferior to NiTi in most respects. Lately, using a multi-component approach, a CoNiCuAlGaIn high entropy intermetallic compound was developed from the NiAl prototype. This new alloy featured a B2 phase and a martensitic transformation along with a remarkable strength in the as-cast state. In the long-term, this new approach might led to a breakthrough for shape memory alloys in general.
KW - Crystal structure
KW - Functional fatigue
KW - High entropy alloys
KW - Intermetallics
KW - Martensitic transformation
KW - SMA
UR - http://www.scopus.com/inward/record.url?scp=85070933946&partnerID=8YFLogxK
U2 - 10.1007/s40830-018-0180-1
DO - 10.1007/s40830-018-0180-1
M3 - Article
AN - SCOPUS:85070933946
VL - 4
SP - 360
EP - 368
JO - Shape Memory and Superelasticity
JF - Shape Memory and Superelasticity
SN - 2199-384X
IS - 3
ER -