Open AccessSynthesis of bulk nanostructured Mg-based alloy via spark plasma sintering through in situ crystallization of an amorphous precursor
Author(s) -
Song-Yi Kim,
Hyeon-Ah Kim,
AYoung Lee,
Do-Hyang Kim,
Hyun-Kyu Lim,
Min Ha Lee
Publication year - 2021
Publication title -
materials research express
Language(s) - English
Resource type - Journals
ISSN - 2053-1591
DOI - 10.1088/2053-1591/abf683
Subject(s) - spark plasma sintering , materials science , crystallization , alloy , sintering , microstructure , intermetallic , amorphous solid , metallurgy , chemical engineering , grain size , grain growth , crystallography , chemistry , engineering
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.