On the occurrence of a eutectic-type structure in solidification of Al-Zr alloys

F. Wang; D. G. Eskin; A. V. Khvan; K. F. Starodub; J. J H Lim; M. G. Burke; T. Connolley; J. Mi

doi:10.1016/j.scriptamat.2017.02.027

On the occurrence of a eutectic-type structure in solidification of Al-Zr alloys

F. Wang, D. G. Eskin^*, A. V. Khvan, K. F. Starodub, J. J H Lim, M. G. Burke, T. Connolley, J. Mi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

For the first time, experimental evidence is presented for the occurrence of a eutectic reaction in dilute Al-Zr alloys solidified at cooling rates from 0.5 to 5 K/s. Particles which formed at grain boundaries during solidification were confirmed by electron diffraction analysis to be the equilibrium tetragonal DO₂₃ Al₃Zr phase. Differential thermal analysis showed a thermal arrest at 658–659 °C, i.e. below the melting point of pure Al, which indicated the presence of a eutectic reaction.

Original language	English
Pages (from-to)	75-78
Number of pages	4
Journal	Scripta Materialia
Volume	133
Early online date	23 Feb 2017
DOIs	https://doi.org/10.1016/j.scriptamat.2017.02.027
Publication status	Published - 1 May 2017

Keywords

Al-Zr
Differential thermal analysis (DTA)
Electron diffraction
Eutectic solidification
Solidification microstructure

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10.1016/j.scriptamat.2017.02.027Licence: CC BY

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title = "On the occurrence of a eutectic-type structure in solidification of Al-Zr alloys",

abstract = "For the first time, experimental evidence is presented for the occurrence of a eutectic reaction in dilute Al-Zr alloys solidified at cooling rates from 0.5 to 5 K/s. Particles which formed at grain boundaries during solidification were confirmed by electron diffraction analysis to be the equilibrium tetragonal DO23 Al3Zr phase. Differential thermal analysis showed a thermal arrest at 658–659 °C, i.e. below the melting point of pure Al, which indicated the presence of a eutectic reaction.",

keywords = "Al-Zr, Differential thermal analysis (DTA), Electron diffraction, Eutectic solidification, Solidification microstructure",

author = "F. Wang and Eskin, {D. G.} and Khvan, {A. V.} and Starodub, {K. F.} and Lim, {J. J H} and Burke, {M. G.} and T. Connolley and J. Mi",

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doi = "10.1016/j.scriptamat.2017.02.027",

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T1 - On the occurrence of a eutectic-type structure in solidification of Al-Zr alloys

AU - Wang, F.

AU - Eskin, D. G.

AU - Khvan, A. V.

AU - Starodub, K. F.

AU - Lim, J. J H

AU - Burke, M. G.

AU - Connolley, T.

AU - Mi, J.

PY - 2017/5/1

Y1 - 2017/5/1

N2 - For the first time, experimental evidence is presented for the occurrence of a eutectic reaction in dilute Al-Zr alloys solidified at cooling rates from 0.5 to 5 K/s. Particles which formed at grain boundaries during solidification were confirmed by electron diffraction analysis to be the equilibrium tetragonal DO23 Al3Zr phase. Differential thermal analysis showed a thermal arrest at 658–659 °C, i.e. below the melting point of pure Al, which indicated the presence of a eutectic reaction.

AB - For the first time, experimental evidence is presented for the occurrence of a eutectic reaction in dilute Al-Zr alloys solidified at cooling rates from 0.5 to 5 K/s. Particles which formed at grain boundaries during solidification were confirmed by electron diffraction analysis to be the equilibrium tetragonal DO23 Al3Zr phase. Differential thermal analysis showed a thermal arrest at 658–659 °C, i.e. below the melting point of pure Al, which indicated the presence of a eutectic reaction.

KW - Al-Zr

KW - Differential thermal analysis (DTA)

KW - Electron diffraction

KW - Eutectic solidification

KW - Solidification microstructure

UR - http://www.scopus.com/inward/record.url?scp=85013632153&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2017.02.027

DO - 10.1016/j.scriptamat.2017.02.027

M3 - Article

AN - SCOPUS:85013632153

SN - 1359-6462

VL - 133

SP - 75

EP - 78

JO - Scripta Materialia

JF - Scripta Materialia

ER -

On the occurrence of a eutectic-type structure in solidification of Al-Zr alloys

Abstract

Keywords

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