Rowson, M;
Bennett, CJ;
Azeem, MA;
Magdysyuk, O;
Rouse, J;
Lye, R;
Davies, J;
... Lee, PD; + view all
(2021)
Observation of microstructure evolution during inertia friction welding using in-situ synchrotron X-ray diffraction.
Journal of Synchrotron Radiation
, 28
(3)
10.1107/s1600577521001569.
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Abstract
The widespread use and development of inertia friction welding is currently restricted by an incomplete understanding of the deformation mechanisms and microstructure evolution during the process. Understanding phase transformations and lattice strains during inertia friction welding is essential for the development of robust numerical models capable of determining optimized process parameters and reducing the requirement for costly experimental trials. A unique compact rig has been designed and used in-situ with a high-speed synchrotron X-ray diffraction instrument to investigate the microstructure evolution during inertia friction welding of a high-carbon steel (BS1407). At the contact interface, the transformation from ferrite to austenite was captured in great detail, allowing for analysis of the phase fractions during the process. Measurement of the thermal response of the weld reveals that the transformation to austenite occurs 230 °C below the equilibrium start temperature of 725 °C. It is concluded that the localization of large strains around the contact interface produced as the specimens deform assists this non-equilibrium phase transformation.
| Type: | Article |
|---|---|
| Title: | Observation of microstructure evolution during inertia friction welding using in-situ synchrotron X-ray diffraction |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1107/s1600577521001569 |
| Publisher version: | http://dx.doi.org/10.1107/s1600577521001569 |
| Language: | English |
| Additional information: | This article is published under a Creative Commons licence (CC BY). |
| Keywords: | inertia friction welding; time-resolved synchrotron diffraction; phase transformation; non-equilibrium phase transformation. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10125231 |
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