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Fast Synchrotron X-Ray Tomography of Dynamic Processes in Liquid Aluminium Alloy Foam

Kamm, Paul Hans; García-Moreno, Francisco; Neu, Tillmann Robert; Heim, Korbinian; Mokso, Rajmund LU and Banhart, John (2016) In Advanced Engineering Materials
Abstract

Series of fast synchrotron X-ray tomographies are taken continuously at a rate of up to 5Hz, while aluminium alloy precursors are foamed in an X-ray transparent setup for several minutes using infra-red (IR) lasers for heating. The entire foaming process from the solid precursor to the expanded liquid foam is captured. The analysis of the sequence of tomographies is done with an emphasis on nucleation and bubble growth. In early stages of foaming, bubble and crack formation and evolution are observed. We analyze the nucleation stage and obtain quantitative results for the number of nucleation centers and their distribution and derive the nucleation rate as a function of time.

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author
publishing date
type
Contribution to journal
publication status
in press
in
Advanced Engineering Materials
publisher
Wiley-Blackwell
external identifiers
  • scopus:84997335872
ISSN
1438-1656
DOI
10.1002/adem.201600550
language
English
LU publication?
no
id
5d0f474b-d5fb-41c5-a947-241312f7696c
date added to LUP
2017-09-19 14:36:29
date last changed
2017-09-26 16:34:58
@article{5d0f474b-d5fb-41c5-a947-241312f7696c,
  abstract     = {<p>Series of fast synchrotron X-ray tomographies are taken continuously at a rate of up to 5Hz, while aluminium alloy precursors are foamed in an X-ray transparent setup for several minutes using infra-red (IR) lasers for heating. The entire foaming process from the solid precursor to the expanded liquid foam is captured. The analysis of the sequence of tomographies is done with an emphasis on nucleation and bubble growth. In early stages of foaming, bubble and crack formation and evolution are observed. We analyze the nucleation stage and obtain quantitative results for the number of nucleation centers and their distribution and derive the nucleation rate as a function of time.</p>},
  author       = {Kamm, Paul Hans and García-Moreno, Francisco and Neu, Tillmann Robert and Heim, Korbinian and Mokso, Rajmund and Banhart, John},
  issn         = {1438-1656},
  language     = {eng},
  publisher    = {Wiley-Blackwell},
  series       = {Advanced Engineering Materials},
  title        = {Fast Synchrotron X-Ray Tomography of Dynamic Processes in Liquid Aluminium Alloy Foam},
  url          = {http://dx.doi.org/10.1002/adem.201600550},
  year         = {2016},
}