Publication detail

Revealing the strengthening contribution of stacking faults, dislocations and grain boundaries in severely deformed LPBF AlSi10Mg alloy

SNOPIŃSKI, P. KOTOUL, M. PETRUŠKA, J. RUSZ, S. ŻABA, K. HILŠER, O.

English title

Revealing the strengthening contribution of stacking faults, dislocations and grain boundaries in severely deformed LPBF AlSi10Mg alloy

Type

journal article in Web of Science

Language

en

Original abstract

In this study, microstructural features direct metal laser melted (DMLM) aluminium–siliconmagnesium (AlSi10Mg) are investigated using advanced transmission electron microscopy (TEM) and high-resolution TEM (HRTEM). The focus is on post-processing by ECAP (Equal Channel Angular Pressing) and its effects on grain refinement, stacking fault formation and dislocation accumulation. In addition, the strength enhancing role of stacking faults is for the first time quantified. The results show that ECAP can increase the yield strength from 294 to 396 MPa, while the elongation increases from 2.4% to 6%. These results show that ECAP processing offers a new approach for producing AlSi10Mg products with improved strength and ductility.

English abstract

In this study, microstructural features direct metal laser melted (DMLM) aluminium–siliconmagnesium (AlSi10Mg) are investigated using advanced transmission electron microscopy (TEM) and high-resolution TEM (HRTEM). The focus is on post-processing by ECAP (Equal Channel Angular Pressing) and its effects on grain refinement, stacking fault formation and dislocation accumulation. In addition, the strength enhancing role of stacking faults is for the first time quantified. The results show that ECAP can increase the yield strength from 294 to 396 MPa, while the elongation increases from 2.4% to 6%. These results show that ECAP processing offers a new approach for producing AlSi10Mg products with improved strength and ductility.

Keywords in English

Equal Channel Angular Pressing;grain refinement;stacking fault; dislocation accumulation;transmission electron microscopy

Released

27.09.2023

Publisher

Springer Nature

ISSN

2045-2322

Volume

13

Number

1

Pages from–to

1–16

Pages count

16

BIBTEX


@article{BUT185055,
  author="Przemysław {Snopiński} and Michal {Kotoul} and Jindřich {Petruška} and Stanislav {Rusz} and Krzysztof {Żaba} and Ondřej {Hilšer},
  title="Revealing the strengthening contribution of stacking faults, dislocations and grain boundaries in severely deformed LPBF AlSi10Mg alloy",
  year="2023",
  volume="13",
  number="1",
  month="September",
  pages="1--16",
  publisher="Springer Nature",
  issn="2045-2322"
}