ISIS Neutron and Muon Source Data Journal

Influence of lattice misfit on interphase load partitioning at high temperature in precipitate strengthened ferritic alloys

Abstract: Fe-Al alloys strengthened by coherent phases are designed for high-temperature (HT) applications in thermal power plants. Lattice misfit (LM) between phases plays an important role in the microstructure and HT performance of structural materials (e.g. creep resistance). Hence, LM can give guidance for the development of new HT alloys, but only with proper micromechanical understanding of the interaction between matrix and precipitates at operation temperatures. We found that small Ti addition in ferritic Fe-Al-V alloys strengthened by L21 precipitates can produce similar alloys but with negative, null or positive LM. Hence, we propose to perform Neutron diffraction in-situ tensile tests, at 873K and with loads up 800MPa, to answer the question: What value and sign of LM are optimal to increase the load transfer from the matrix to the precipitate at HT on L21-strengthened ferritic alloys?

Principal Investigator: Dr Javier Santisteban
Local Contact: Dr Saurabh Kabra
Experimenter: Dr Gerardo Hector Rubiolo
Experimenter: Dr Florencia Malamud
Experimenter: Mr uriel alejandro sterin
Experimenter: Dr Pedro Ferreirós
Experimenter: Dr Sergio Soria

DOI: 10.5286/ISIS.E.RB1920604

ISIS Experiment Number: RB1920604

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:
Dr Javier Santisteban et al; (2019): Influence of lattice misfit on interphase load partitioning at high temperature in precipitate strengthened ferritic alloys, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1920604

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