Martensite variant evolution of aged Co-Ni-Ga shape memory alloys


Pseudoelastic CoNiGa high-temperature shape memory alloys (HT-SMAs) show a wide range of tunable transformation temperatures and lower processing costs than conventional Ni-Ti-X HT-SMAs which renders them useful for high-temperature applications in automotive and aerospace industries.The formation of gamma - precipitates is supposed to lead to a significant martensite variant-variant interaction in CoNiGa SMAs. With the SXD Laue Diffractometer we plan to conduct in-situ mechanical compression tests of aged CoNiGa single crystals at elevated temperatures to assess martensite variant-variant interactions which might be the cause for a significant degradation behavior at increased cycle numbers.

Metadata Access
Creator Dr Matthias Gutmann; Mr Christian Lauhoff; Mr Philipp Krooss; Dr Thomas Niendorf; Dr Alex Reul; Dr Wolfgang Schmahl
Publisher ISIS Neutron and Muon Source
Publication Year 2021
Rights CC-BY Attribution 4.0 International;
OpenAccess true
Contact isisdata(at)
Resource Type Dataset
Discipline Construction Engineering and Architecture; Engineering; Engineering Sciences
Temporal Coverage Begin 2018-03-19T10:00:00Z
Temporal Coverage End 2018-04-17T12:45:24Z