ISIS Neutron and Muon Source Data Journal

Short-term stress relaxation on cyclic lattice-strains evolution of a new martensitic steel at elevated temperature via in-situ ND

Abstract: A new 9Cr martensitic steel MARBN for next generation power plant is shown to have a superior mechanical performance comparing with existing other 9Cr steels in high temperature applications. The additional short-term dwell period of power plant operations is extremely detrimental to experience creep-fatigue, which has already been regarded as the key failure mechanism of the high temperature components. The proposed experiment aims to gain an in-depth physical understanding on the micro-mechanics strains evolution induced by the short-term stress relaxation on lattice-strains development through Neutron Diffraction, providing more insights of such material in high temperature applications. The proposed in-situ ND measurements will be interpreted using a crystal plasticity finite element model to accounting for direct interaction between a single crystal and its neighbouring crystals.

Principal Investigator: Professor Wei Sun
Experimenter: Dr Biao Cai
Experimenter: Dr Ming Li
Local Contact: Dr Saurabh Kabra

DOI: 10.5286/ISIS.E.RB2010020

ISIS Experiment Number: RB2010020

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 Wei Sun et al; (2020): Short-term stress relaxation on cyclic lattice-strains evolution of a new martensitic steel at elevated temperature via in-situ ND, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010020

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