ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
High-Temperature Phase Stability and Deformation Mechanisms in Quench-and-Partitioned Steel
Abstract: Quench-and-Partitioned (QP) steels derive their superior strength ductility combination from the stabilisation of retained austenite (RA), which transforms to martensite during deformation through the transformation-induced plasticity effect. Although the low-temperature behaviour of QP steels is well understood, the stability of RA and the associated deformation mechanisms at elevated temperatures remain insufficiently quantified. These conditions are directly relevant to hot-forming, joining, and service environments of automotive steels. This proposal aims to determine the temperature-dependent phase stability and load-sharing behaviour of different phases in QP1180 steel under tensile deformation between 25 C and 700 C. Loading experiments at Engin-X will capture diffraction patterns from both RA and martensite at successive stress levels, enabling quantitative tracking of phase fractions, lattice strain, and peak broadening. The results will reveal how stress-assisted transformation and dynamic recovery evolve with temperature, identifying the limits of RA stability and strength retention. By linking transformation kinetics with mechanical data, this study will provide benchmark insights for the design and forming simulation of next-generation QP steels and directly complement our previous studies of thermal cycling. This proposal forms part of a wider programme on temperature-dependent behaviour funded by EU Horizon projects 'DESIGN-XTREME' and 'MICRO-QP'.
Principal Investigator: Dr Muhammad Naeem
Experimenter: Dr Liliana Romero Resendiz
Local Contact: Dr Joe Kelleher
Experimenter: Dr Matthew Lloyd
DOI: 10.5286/ISIS.E.RB2610404
ISIS Experiment Number: RB2610404
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2610404-1 | ENGINX | 13 May 2029 | Download |
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],
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For Example:
Dr Muhammad Naeem et al; (2026): High-Temperature Phase Stability and Deformation Mechanisms in Quench-and-Partitioned Steel, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2610404
Data is released under the CC-BY-4.0 license.
