Publication detail

Investigation of Microstructure and Mechanical Properties of SLM-Fabricated AlSi10Mg Alloy Post-Processed Using Equal Channel Angular Pressing (ECAP)

SNOPIŇSKI, P., APPIAH, A.N.S., HILŠER, O.,KOTOUL, M.

Original Title

Investigation of Microstructure and Mechanical Properties of SLM-Fabricated AlSi10Mg Alloy Post-Processed Using Equal Channel Angular Pressing (ECAP)

Type

journal article in Web of Science

Language

English

Original Abstract

With the aim of improving the excellent mechanical properties of the SLM-produced AlSi10Mg alloy, this research focuses on post-processing using ECAP (Equal Channel Angular Pressing). In our article, two different post-processing strategies were investigated: (1) low-temperature annealing (LTA) and subsequent ECAP processing at 150 C; (2) no heat treatment and subsequent ECAP processing at 350 C, 400 C and 450 C. The microstructure and mechanical properties of this alloy were analyzed at each stage of post-treatment. Metallographic observations, combined with SEM and EBSD studies, showed that the alloys produced by SLM have a unique cellular microstructure consisting of Si networks surrounding the Al-based matrix phase. Low-temperature annealing (LTA), followed by ECAP treatment, facilitated the microstructural evolution of the alloy with partial breakup of the Si network and observed nucleation of -Si precipitates throughout the Al matrix. This resulted in a Vickers microhardness of 153 HV and a yield strength of 415 MPa. The main results show that post-processing of SLM-produced AlSi10Mg alloys using ECAP significantly affects the microstructural evolution and mechanical properties of the alloy.

Keywords

AlSi10Mg alloy; equal channel angular pressing (ECAP); microstructure; microhardness; yield strength; scanning electron microscopy; electron backscatter diffraction (EBSD)

Authors

SNOPIŇSKI, P., APPIAH, A.N.S., HILŠER, O.,KOTOUL, M.

Released

10. 11. 2022

Publisher

mdpi

Location

Basel, Switzerland.

ISBN

1996-1944

Periodical

Materials

Year of study

15

Number

22

State

Swiss Confederation

Pages from

7940

Pages to

7940

Pages count

14

URL

https://www.mdpi.com/1996-1944/15/22/7940

BibTex

@article{BUT179960,
  author="Michal {Kotoul}",
  title="Investigation of Microstructure and Mechanical Properties of
SLM-Fabricated AlSi10Mg Alloy Post-Processed Using Equal
Channel Angular Pressing (ECAP)",
  journal="Materials",
  year="2022",
  volume="15",
  number="22",
  pages="14",
  doi="10.3390/ma15227940",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/15/22/7940"
}