Time resolved in-situ multi-contrast X-ray imaging of melting in metals
Abstract
In this work, the application of a time resolved multi-contrast beam tracking technique to the investigation of the melting and solidification process in metals is presented. The use of such a technique allows retrieval of three contrast channels, transmission, refraction and dark-field, with millisecond time resolution. We investigated different melting conditions to characterize, at a proof-of-concept level, the features visible in each of the contrast channels. We found that the phase contrast channel provides a superior visibility of the density variations, allowing the liquid metal pool to be clearly distinguished. Refraction and dark-field were found to highlight surface roughness formed during solidification. This work demonstrates that the availability of the additional contrast channels provided by multi-contrast X-ray imaging delivers additional information, also when imaging high atomic number specimens with a significant absorption.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 15, 2022
- Source ID
- 10.1038/s41598-022-15501-2
Entities
People
- Adam Doherty
- Alessandro Olivo
- Christoph Rau
- Joachim Schulz
- Lorenzo Massimi
- Marco Endrizzi
- Peter D. Lee
- Samuel J. Clark
- Saurabh M. Shah
- Sebastian Marussi
- Shashidhara Marathe
Organizations
- Engineering and Physical Sciences Research Council
- European Commission
- Royal Academy of Engineering