Time resolved in-situ multi-contrast X-ray imaging of melting in metals

DOI: 10.1038/s41598-022-15501-2

Authors: Lorenzo Massimi (University College London) , Samuel J. Clark (University College London) , Sebastian Marussi (University College London) , Adam Doherty (University College London) , Saurabh M. Shah (University College London) , Joachim Schulz (MicroWorks GmbH; Karlsruhe Institute of Technology) , Shashidhara Marathe (Diamond Light Source) , Christoph Rau (Diamond Light Source) , Marco Endrizzi (University College London) , Peter D. Lee (University College London) , Alessandro Olivo (University College London)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Scientific Reports , VOL 12

State: Published (Approved)
Published: July 2022
Diamond Proposal Number(s): 23760

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.

Subject Areas: Materials


Instruments: I13-2-Diamond Manchester Imaging

Added On: 18/07/2022 08:06

Documents:
s41598-022-15501-2.pdf

Discipline Tags:

Technique Development - Materials Science Materials Science Metallurgy

Technical Tags:

Imaging Tomography