Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Tensile and Impact Toughness Properties of a Zr-Based Bulk Metallic Glass Fabricated via Laser Powder-Bed Fusion
 
research article

Tensile and Impact Toughness Properties of a Zr-Based Bulk Metallic Glass Fabricated via Laser Powder-Bed Fusion

Sohrabi, Navid  
•
Parrilli, Annapaola
•
Jhabvala, Jamasp  
Show more
October 1, 2021
Materials

In the past few years, laser powder-bed fusion (LPBF) of bulk metallic glasses (BMGs) has gained significant interest because of the high heating and cooling rates inherent to the process, providing the means to bypass the crystallization threshold. In this study, (for the first time) the tensile and Charpy impact toughness properties of a Zr-based BMG fabricated via LPBF were investigated. The presence of defects and lack of fusion (LoF) in the near-surface region of the samples resulted in low properties. Increasing the laser power at the borders mitigated LoF formation in the near-surface region, leading to an almost 27% increase in tensile yield strength and impact toughness. Comparatively, increasing the core laser power did not have a significant influence. It was therefore confirmed that, for BMGs like for crystalline alloys, near-surface LoFs are more detrimental than core LoFs. Although increasing the border and core laser power resulted in a higher crystallized fraction, detrimental to the mechanical properties, reducing the formation of LoF defects (confirmed using micro-computed tomography, Micro-CT) was comparatively more important.

  • Files
  • Details
  • Metrics
Type
research article
DOI
10.3390/ma14195627
Web of Science ID

WOS:000706507300001

Author(s)
Sohrabi, Navid  
Parrilli, Annapaola
Jhabvala, Jamasp  
Neels, Antonia
Loge, Roland E.  
Date Issued

2021-10-01

Publisher

MDPI

Published in
Materials
Volume

14

Issue

19

Article Number

5627

Subjects

Chemistry, Physical

•

Materials Science, Multidisciplinary

•

Metallurgy & Metallurgical Engineering

•

Physics, Applied

•

Physics, Condensed Matter

•

Chemistry

•

Materials Science

•

Physics

•

bulk metallic glass (bmg)

•

laser powder-bed fusion (lpbf)

•

crystallization

•

defects

•

tensile properties

•

impact toughness

•

mechanical-properties

•

high-strength

•

embrittlement

•

behavior

•

microstructure

•

deposition

•

components

•

composite

•

ductile

•

fatigue

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMTM  
Available on Infoscience
October 23, 2021
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/182429
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés