TY - CHAP

T1 - 3D microstructural evolution on solidifying Mg–5Nd–5Zn alloy observed via in situ synchrotron tomography

AU - Subroto, Tungky

AU - Mendis, Chamini L.

AU - D’Elia, Francesco

AU - Szakács, Gábor

AU - Fife, Julie L.

AU - Hort, Norbert

AU - Kainer, Karl Ulrich

AU - Tolnai, Domonkos

PY - 2017

Y1 - 2017

N2 - In situ synchrotron tomography is a unique technique to study 3D microstructure evolution during solidification due to the high brilliance of the beam and the short acquisition time of the detector systems. In this work, in situ synchrotron tomographic observations were performed during the solidification of Mg–5Nd–5Zn (wt%) alloy with a cooling rate of 5, °C/min. The experiment was performed at the TOMCAT beamline of the Swiss Light Source (Paul Scherrer Institute (PSI), Villigen, Switzerland). The sample was melted using a laser-based heating system and then cooled until completely solidified. 3D tomograms were acquired during solidification. The microstructural analysis starts after the coherency point until the end of solidification. A differential thermal analysis (DTA) experiment was performed to estimate the liquidus and solidus temperature of the alloy. These values were used to correct the measured temperature from the in situ solidification experiment. Different microstructural parameters such as the volume fractions of the phases, i.e. α-Mg dendrites, interdendritics and pores, as well as the interconnectivity and skeletonization results are discussed.

AB - In situ synchrotron tomography is a unique technique to study 3D microstructure evolution during solidification due to the high brilliance of the beam and the short acquisition time of the detector systems. In this work, in situ synchrotron tomographic observations were performed during the solidification of Mg–5Nd–5Zn (wt%) alloy with a cooling rate of 5, °C/min. The experiment was performed at the TOMCAT beamline of the Swiss Light Source (Paul Scherrer Institute (PSI), Villigen, Switzerland). The sample was melted using a laser-based heating system and then cooled until completely solidified. 3D tomograms were acquired during solidification. The microstructural analysis starts after the coherency point until the end of solidification. A differential thermal analysis (DTA) experiment was performed to estimate the liquidus and solidus temperature of the alloy. These values were used to correct the measured temperature from the in situ solidification experiment. Different microstructural parameters such as the volume fractions of the phases, i.e. α-Mg dendrites, interdendritics and pores, as well as the interconnectivity and skeletonization results are discussed.

KW - In situ synchrotron tomography

KW - Mg–Nd–Zn

KW - Microstructure evolution

KW - Solidification

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=85042253287&partnerID=8YFLogxK

U2 - 10.1007/978-3-319-52392-7_83

DO - 10.1007/978-3-319-52392-7_83

M3 - Article in conference proceedings

AN - SCOPUS:85042253287

SN - 978-3-319-52391-0

T3 - Minerals, Metals and Materials Series

SP - 605

EP - 612

BT - Magnesium Technology 2017

A2 - Neelameggham, Neale R.

A2 - Singh, Alok

A2 - Solanki, Kiran N.

A2 - Orlov, Dmytro

PB - Springer International Publishing AG

T2 - International Symposium on Magnesium Technology 2017

Y2 - 26 February 2017 through 2 March 2017

ER -