ISIS Neutron and Muon Source Data Journal

In-situ neutron diffraction study of TWIP in a Ni based superalloy

Abstract: Twinning induced plasticity (TWIP) has been studied extensively regarding low stacking fault energy (SFE) materials such as steels where the specific deformation mechanism enhances both strength and ductility. In Ni-based alloys, activation of twinning is difficult due to their high SFE. Our recent work revealed that outstanding mechanical properties can be obtained in a Ni-based superalloy by inducing the TWIP effect at a low deformation temperature. Ab initio calculations indicates that SFE is not the controlling effect. To investigate the underlying mechanisms further an in-situ neutron diffraction investigation is proposed. Lattice strain changes and grain rotations with deformation at RT and 77 K derived from the experiment will be correlated to microstructural studies by laboratory techniques to explore the mechanisms and conditions for activating TWIP in high SFE alloys.

Principal Investigator: Professor Guocai Chai
Experimenter: Professor Ru Lin Peng
Local Contact: Dr Saurabh Kabra
Experimenter: Mr Joakim Nordström

DOI: 10.5286/ISIS.E.RB2010673

ISIS Experiment Number: RB2010673

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Guocai Chai et al; (2020): In-situ neutron diffraction study of TWIP in a Ni based superalloy , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010673

Data is released under the CC-BY-4.0 license.