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HomeMaterials Science ForumMaterials Science Forum Vols. 706-709Ternary Intermetallic Compounds across the Mg-NiY...

Ternary Intermetallic Compounds across the Mg-NiY Line at 673 K

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Abstract:

The phase relationship of the Mg-Ni-Y system along the Mg-NiY line has been investigated using electron probe micro analysis (EPMA) at 673 K. Three two phase regions (Mg₂Y+τ₆, Mg₂Y+ MgNiY(τ₃), MgY+Mg₃Ni₂Y₄(τ₁)) and two three phase regions (Mg₂Y+Mg₃Ni₂Y₄(τ₁)+ MgNi₂Y₂(τ₂) and NiY+Mg₃Ni₂Y₄(τ₁)+MgNi₂Y₂(τ₂)) have been identified. One new ternary compound Mg₅NiY(τ₅) was found and reported for the first time. Ternary solubility of the Mg_8-13NiY(τ₆) compound has been established which extends from 77.10 at.% Mg until 86.77 at.% Mg along the Mg-NiY section. Solubility of the third element in the binary compounds, NiY, Mg₂Y and MgY has also been determined. Keywords: Mg alloy, phase identification, phase equilibrium, isothermal section.

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THERMEC 2011

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Periodical:

Materials Science Forum (Volumes 706-709)

Pages:

1134-1139

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.706-709.1134

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Online since:

January 2012

Authors:

Mohammad Mezbahul-Islam, Dmytro Kevorkov, Elhachmi Essadiqi, Mamoun Medraj

Keywords:

Isothermal Section, Mg Alloy, Phase Equilibrium, Phase Identification

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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