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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.

SUBMITTER: Massimi L

PROVIDER: S-EPMC9287332 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature

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

Massimi Lorenzo L Clark Samuel J SJ Marussi Sebastian S Doherty Adam A Shah Saurabh M SM Schulz Joachim J Marathe Shashidhara S Rau Christoph C Endrizzi Marco M Lee Peter D PD Olivo Alessandro A

Scientific reports 20220715 1

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 contras ...[more]

PMID: 35840749

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

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

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