Publication detail

Processing of AZ91D Magnesium Alloy by Laser Powder Bed Fusion

NOPOVÁ, K. JAROŠ, J. ČERVINEK, O. PANTĚLEJEV, L. GNEIGER, S. SENCK, S. KOUTNÝ, D.

Original Title

Processing of AZ91D Magnesium Alloy by Laser Powder Bed Fusion

Type

journal article in Web of Science

Language

English

Original Abstract

Magnesium alloys are perspective materials for use in transportation, aerospace and medical industries, mainly because of their good load-to-weight ratio, biocompatibility and biodegradability. For the effective production of magnesium components by the laser powder bed fusion (LPBF) process, the process parameters with verified mechanical properties need to be determined. In this paper, we prepared bulk samples with a high relative density of AZ91D magnesium alloy. Tensile tests were then performed on LPBF samples to evaluate the mechanical properties. Our results show that the bulk samples achieved a relative density >99%, in multiple planes over the full sample height, while the mechanical properties reached values of YS = 181 MPa, UTS = 305 MPa and A5.65 = 5.2%. The analysis by scanning electron microscope revealed fine β-Mg17Al12 particles in the microstructure, which have a positive effect on the mechanical properties. The chemical composition of magnesium alloy AZ91D changed slightly during processing by LPBF due to the evaporation of the Mg content. However, the resulting composition still corresponds to the range specified by the ASTM standard for the AZ91D alloy.

Keywords

AZ91D; magnesium alloy; laser powder bed fusion; energy dispersive spectroscopy; scanning electron microscope; process parameters; single tracks; porosity

Authors

NOPOVÁ, K.; JAROŠ, J.; ČERVINEK, O.; PANTĚLEJEV, L.; GNEIGER, S.; SENCK, S.; KOUTNÝ, D.

Released

20. 1. 2023

Publisher

MDPI

ISBN

2076-3417

Periodical

Applied Sciences - Basel

Year of study

13

Number

1

State

Swiss Confederation

Pages count

16

URL

https://www.mdpi.com/2076-3417/13/3/1377

Full text in the Digital Library

http://hdl.handle.net/11012/209236

BibTex

@article{BUT181561,
  author="Klára {Nopová} and Jan {Jaroš} and Ondřej {Červinek} and Libor {Pantělejev} and Stefan {Gneiger} and Sascha {Senck} and Daniel {Koutný}",
  title="Processing of AZ91D Magnesium Alloy by Laser Powder Bed Fusion",
  journal="Applied Sciences - Basel",
  year="2023",
  volume="13",
  number="1",
  pages="16",
  doi="10.3390/app13031377",
  issn="2076-3417",
  url="https://www.mdpi.com/2076-3417/13/3/1377"
}