EFFECT OF SINTERING TEMPERATURE ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AE42 MAGNESIUM ALLOY PREPARED BY SPARK PLASMA SINTERING

1 MINÁRIK Peter
Co-authors:
2 LUKÁČ František 2 CINERT Jakub 1 ŠAŠEK Stanislav 1 KRÁL Robert
Institutions:
1 Charles University, Department of Physics of Materials, Ke Karlovu 5, 12116 Prague, Czech Republic, EU, peter.minarik@mff.cuni.cz
2 Institute of Plasma Physics, Czech Academy of Science, Za Slovankou 3, 18200 Prague, Czech Republic
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
1401-1406
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
16 views / 1 download
Abstract

Magnesium alloy AE42 was prepared by powder metallurgy technique of spark plasma sintering. The effect of sintering parameters, particularly sintering temperature, on the microstructure and mechanical strength was investigated. The gas-atomized powder was sintered at four temperatures in the temperature range of 400-550 °C. It was found that mechanical strength of the sintered samples was significantly affected by several microstructural features. Application of relatively high load during sintering caused deformation of the individual particles and consequent recrystallization depending on the processing temperature resulted in the release of internal strain and in grain growth. As a result, the evolution of the mechanical strength as a function of the sintering temperature was significantly affected by residual stress, grain size and coarsening of secondary phase particles.

Keywords: magnesium, spark plasma sintering, microstructure, mechanical properties
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