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BY 4.0 license Open Access Published by De Gruyter December 25, 2019

In-situ synchrotron investigation of the phases- and their morphology-development in Mg–Nd–Zn alloys

Paper presented at the Symposium “Tomographic and Radiographic Imaging with Synchrotron X-rays and Neutrons” of the MSE 2018, 26–28 September 2018, Darmstadt, Germany

  • D. Tolnai , T. Sosro , S. Gavras , R. H. Buzolin and N. Hort


The addition of Zn to the Mg–Nd system improves the yield strength and creep resistance, however its influence on the intermetallic phases in the ternary system is not yet fully understood. Understanding the sequence of phase-formation and phase-evolution during solidification and processing is essential to microstructure design. The solidification was investigated with in-situ synchrotron radiation-diffraction and tomography during cooling from the molten state to 200°C to investigate the phase-formation and transformation characteristics. The solidification starts with α-Mg followed by two distinct intermetallic phases T2 and T3. The results suggest that Zn stabilizes the Mg3Nd phase and accelerates precipitate formation. The dendritic morphology changes during solidification towards coarser shapes, thus impedes feeding and promotes hot tearing.

Correspondence address, Dr. Domonkos Tolnai, Helmholtz Zentrum Geesthacht, Max-Planck-Straße 1, 21502 Geesthacht, Germany, E-mail: , Tel.: +49 4152 87-1974


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Received: 2018-10-30
Accepted: 2019-02-11
Published Online: 2019-12-25
Published in Print: 2020-01-09

© 2020, Carl Hanser Verlag, München

This work is licensed under the Creative Commons Attribution 4.0 International License.

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