Publication detail

Microstructure of the Mg-4Y-3RE-Zr (WE43) Magnesium Alloy Produced by 3D Printing

KRIŠTOFOVÁ, P. KUBÁSEK, J. VOJTĚCH, D. PALOUŠEK, D. SUCHÝ, J.

Original Title

Microstructure of the Mg-4Y-3RE-Zr (WE43) Magnesium Alloy Produced by 3D Printing

English Title

Microstructure of the Mg-4Y-3RE-Zr (WE43) Magnesium Alloy Produced by 3D Printing

Type

journal article in Scopus

Language

en

Original Abstract

In this study, the three microstructure of the as-cast, hot-extruded, and 3D printed Mg-4Y-3RE-Zr (WE43) magnesium alloy was studied. The selective laser melting (SLM) process was used for 3D printing. The study was aimed at mapping the microstructure of a 3D printed magnesium alloy produced by the SLM process. Magnesium alloys made in the form of 3D printing are relatively new production processes. The study therefore this process compared with current processes, which are now well known and mapped. It was therefore studied the microstructure produced by three different processes of production. The microstructure and chemical composition of present phases were studied using scanning electron microscopy (SEM) and energy dispersive x-ray spectrometry (EDS). Based on the microstructural examination, significant differences were found between the materials produced by different production processes. The microstructure of the as-cast alloy consisted of relatively coarse α-Mg dendrites surrounded by eutectics containing intermetallic phases rich-in alloying elements. During hot extrusion, the eutectics fragmented into fine particles which arranged into rows parallel to the extrusion direction. The 3D printed alloy was characterized by significantly refined microstructure due to a high cooling rate during the SLM process. It consisted of very fine dendrites of α-Mg and interdendritic network enriched-in the alloying elements. In addition, there were also oxides covering original powder particles and the material showed also some porosity that is a common feature of 3D printed alloys.

English abstract

In this study, the three microstructure of the as-cast, hot-extruded, and 3D printed Mg-4Y-3RE-Zr (WE43) magnesium alloy was studied. The selective laser melting (SLM) process was used for 3D printing. The study was aimed at mapping the microstructure of a 3D printed magnesium alloy produced by the SLM process. Magnesium alloys made in the form of 3D printing are relatively new production processes. The study therefore this process compared with current processes, which are now well known and mapped. It was therefore studied the microstructure produced by three different processes of production. The microstructure and chemical composition of present phases were studied using scanning electron microscopy (SEM) and energy dispersive x-ray spectrometry (EDS). Based on the microstructural examination, significant differences were found between the materials produced by different production processes. The microstructure of the as-cast alloy consisted of relatively coarse α-Mg dendrites surrounded by eutectics containing intermetallic phases rich-in alloying elements. During hot extrusion, the eutectics fragmented into fine particles which arranged into rows parallel to the extrusion direction. The 3D printed alloy was characterized by significantly refined microstructure due to a high cooling rate during the SLM process. It consisted of very fine dendrites of α-Mg and interdendritic network enriched-in the alloying elements. In addition, there were also oxides covering original powder particles and the material showed also some porosity that is a common feature of 3D printed alloys.

Keywords

Magnesium, Mg-4Y-3RE-Zr alloy, WE43 alloy, 3D printing, selective laser melting

Released

11.02.2019

Publisher

J.E. Purkyně University in Ústí nad Labem, Faculty of Mechanical Engineering, 2019

Location

Ústí nad Labem

Pages from

89

Pages to

94

Pages count

6

URL

BibTex


@article{BUT158692,
  author="David {Paloušek} and Jan {Suchý}",
  title="Microstructure of the Mg-4Y-3RE-Zr (WE43) Magnesium Alloy Produced by 3D Printing",
  annote="In  this study,  the  three  microstructure  of  the  as-cast,  hot-extruded,  and  3D  printed  Mg-4Y-3RE-Zr  (WE43) magnesium alloy was studied. The selective laser melting (SLM) process was used for 3D printing. The study was aimed at mapping the microstructure of a 3D printed magnesium alloy produced by the SLM process. Magnesium alloys made in the form of 3D printing are relatively new production processes. The study therefore this process compared  with  current  processes,  which  are  now  well  known  and  mapped.  It  was  therefore  studied  the microstructure  produced  by  three  different  processes  of  production.  The  microstructure  and  chemical composition of present phases were studied using scanning electron microscopy (SEM)  and energy dispersive x-ray spectrometry (EDS). Based on the microstructural examination,  significant  differences  were found between the  materials  produced by  different production  processes.  The microstructure  of  the  as-cast  alloy consisted  of relatively coarse α-Mg dendrites surrounded by eutectics containing intermetallic phases rich-in alloying elements. During  hot  extrusion,  the  eutectics  fragmented  into  fine  particles  which  arranged  into  rows  parallel  to  the extrusion direction. The 3D printed alloy was characterized by significantly refined microstructure due to a high cooling  rate  during  the  SLM  process. It  consisted  of  very  fine  dendrites  of  α-Mg  and  interdendritic  network enriched-in the alloying elements. In addition,  there were also oxides covering original powder particles and the material showed also some porosity that is a common feature of 3D printed alloys.",
  address="J.E. Purkyně University in Ústí nad Labem, Faculty of Mechanical Engineering, 2019",
  chapter="158692",
  doi="10.21062/ujep/249.2019/a/1213-2489/mt/19/1/89",
  howpublished="online",
  institution="J.E. Purkyně University in Ústí nad Labem, Faculty of Mechanical Engineering, 2019",
  number="1.",
  volume="19.",
  year="2019",
  month="february",
  pages="89--94",
  publisher="J.E. Purkyně University in Ústí nad Labem, Faculty of Mechanical Engineering, 2019",
  type="journal article in Scopus"
}