ISIS Neutron and Muon Source Data Journal

Understanding the mechanism of primary creep persistency: dislocation density evolution

Abstract: The proposal requests 2-day access to ENGIN-X instrument for gathering diffraction data from 20 samples made of two high-temperature steels (10CrMoVNbN and TP316H). The samples have been taken from a set of interrupted high-temperature variable-stress creep tests and have a defined deformation history. The obtained diffraction patterns will be analysed using the CMWP method which evaluates the peak broadening characteristics of diffraction peaks for determination of dislocation density. The derived dislocation density values will be employed to understand the responsible mechanism for the repeated occurrence of fast creep stage during stress varying creep loading conditions (i.e. primary creep persistency, PCP). The observations will be used for examination of the reliability of our proposed PCP mechanism and effectiveness verification of our developed dislocation-based model.

Principal Investigator: Dr Ehsan Hosseini
Experimenter: Dr Stuart Holdsworth
Experimenter: Mr Xiaolong Li
Local Contact: Dr Saurabh Kabra

DOI: 10.5286/ISIS.E.RB1810498

ISIS Experiment Number: RB1810498

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

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

For Example:
Dr Ehsan Hosseini et al; (2018): Understanding the mechanism of primary creep persistency: dislocation density evolution, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1810498

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