Skip to Main content Skip to Navigation
Conference papers

In situ characterization by synchrotron x-ray radiography of the growth dynamics of equiaxed grains in Al-10wt.%Cu alloys

G. Reinhart 1 A. Bongo H. Nguyen-Thi 1 J. Baruchel B. Billia 1
1 IM2NP - Institut des Matériaux, de Microélectronique et des Nanosciences de Provence
Abstract : The development of dendritic equiaxed grains in thin samples is monitored by in situ and real-time x-ray radiography on Al-10wt.%Cu alloys solidified by isothermal cooling down at the European Synchrotron Radiation Facility (ESRF). In situ radiography allows direct insight into dynamical phenomena that cannot be reconstructed after growth from metallography on metallic materials. This presentation is focused on the analysis of equiaxed grain growth from the very early stages to a state where dendritic grains are no longer visibly changing, close to coherency. Characteristic parameters of primary interest for materials processing and theoretical modeling and numerical simulation are discussed. The transition of equiaxed grain envelope growth driven by primary dendrites arms to growth driven by secondary arms is analyzed. The quantitative evolution of the projected internal solid fraction and total solid fraction is compared with major analytical models. Advantages and limitations of x-ray monitoring on thin 3D-samples will be discussed.
Document type :
Conference papers
Complete list of metadatas
https://hal-amu.archives-ouvertes.fr/hal-01452165
Contributor : Im2np Bibliométrie <>
Submitted on : Wednesday, February 1, 2017 - 4:19:07 PM
Last modification on : Friday, March 29, 2019 - 10:36:05 AM

Identifiers

  • HAL Id : hal-01452165, version 1

Collections

UNIV-AMU | CNRS | UNIV-TLN | IM2NP

Citation

G. Reinhart, A. Bongo, H. Nguyen-Thi, J. Baruchel, B. Billia. In situ characterization by synchrotron x-ray radiography of the growth dynamics of equiaxed grains in Al-10wt.%Cu alloys . TMS2016 Annual Meeting, Session: Materials Research in Reduced Gravity, Feb 2016, Nashville, Tennessee, United States. ⟨hal-01452165⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

180