Synthesis of bulk nanostructured Mg-based alloy via spark plasma sintering through in situ crystallization of an amorphous precursor

We present the synthesis of a bulk nanostructured Mg-based alloy that has a grain size less than 300 nm. A nanostructured Mg-Zn-Cu-Nd alloy with an exceptionally high hardness can be obtained through simultaneous consolidation and in situ crystallization of the amorphous Mg 84 Zn 7 Cu 3 Nd 6 alloy p...

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Bibliographic Details
Published in:Materials research express 2021-05, Vol.8 (5), p.55201
Main Authors: Kim, Song-Yi, Kim, Hyeon-Ah, Lee, A-Young, Kim, Do-Hyang, Lim, Hyunkyu, Lee, Min-Ha
Format: Article
Language:English
Subjects:
Alloys
amorphous
Amorphous alloys
consolidation
Copper
Crystallization
Grain size
Hardness
Intermetallic compounds
Magnesium base alloys
metallic glass
Nanostructure
Neodymium base alloys
Plasma sintering
Precursors
sintering
Spark plasma sintering
Synthesis
Zinc
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Summary:We present the synthesis of a bulk nanostructured Mg-based alloy that has a grain size less than 300 nm. A nanostructured Mg-Zn-Cu-Nd alloy with an exceptionally high hardness can be obtained through simultaneous consolidation and in situ crystallization of the amorphous Mg 84 Zn 7 Cu 3 Nd 6 alloy precursor using the spark plasma sintering process. We evaluate the relationship between the microstructure and preparation conditions on the grain size of nanostructured Mg-based alloys during the sintering process. The hardness of the bulk sample produced from the sintered amorphous Mg-Zn-Cu-Nd precursor at 260 °C is maximized via the nanocrystallization of intermetallic compounds using the sintering process. The populated crystallization and confined growth of phases contribute to the refinement of gains in nanostructured Mg-based alloys.
ISSN:2053-1591
2053-1591
DOI:10.1088/2053-1591/abf683