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Title:Laser powder bed fusion parameters optimization for enhanced mechanical properties of EOS Co-Cr dental alloy
Authors:ID Viderščak, Dalibor (Author)
ID Schauperl, Zdravko (Author)
ID Runje, Biserka (Author)
ID Šolić, Sanja (Author)
ID Ćatić, Amir (Author)
ID Godec, Matjaž (Author)
ID Paulin, Irena (Author)
ID Donik, Črtomir (Author)
Files:.pdf PDF - Presentation file, download (8,69 MB)
MD5: 919D63A8145948EA5C213AAC5BBAD1E4
 
URL URL - Source URL, visit https://www.mdpi.com/1996-1944/17/20/4993
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo IMT - Institute of Metals and Technology
Abstract:This research explores how variations in laser powder bed fusion (LPBF) parameters—laser power (P), scanning speed (v), and base plate preheating temperature (ϑp)—affect the mechanical properties of the EOS Co-Cr SP2 dental alloy. A central composite design (CCD) was used to optimize the process parameters. Mechanical testing focused on crucial properties for dental applications, including yield strength (Rp0.2), elongation (ε), toughness (KVa), and flexural strength (Rms). Microstructural analysis was conducted using light and electron microscopy, while XRD identified microstructural phases. Statistical analysis (ANOVA, Scheffé post hoc test, α = 0.05) revealed significant effects of P, v, and ϑp on the mechanical properties. Response surface models (RSMs) were developed, and optimal parameters were determined to achieve maximum toughness and flexural strength. Maximum values were obtained with laser power above 205Wand base plate preheating at 310 ◦C. The mathematical model predicted toughness values with less than 5% deviation from experimental results, indicating high accuracy.
Keywords:LPBF, production parameters, Co-Cr dental alloy, CCD, mechanical properties, ANOVA
Publication status:Published
Publication version:Version of Record
Publication date:12.10.2024
Publisher:MDPI
Year of publishing:2024
Number of pages:str. 1-15
Numbering:Vol. 17, iss. 20, [article no.] 4993
Source:Švica
PID:20.500.12556/DiRROS-20543 New window
UDC:621.7 :620.1:669.2/.8
ISSN on article:1996-1944
DOI:10.3390/ma17204993 New window
COBISS.SI-ID:211864579 New window
Copyright:© 2024 by the authors
Note:Nasl. z nasl. zaslona; Opis vira z dne 17. 10. 2024;
Publication date in DiRROS:18.10.2024
Views:387
Downloads:8248
Metadata:XML DC-XML DC-RDF
:
VIDERŠČAK, Dalibor, SCHAUPERL, Zdravko, RUNJE, Biserka, ŠOLIĆ, Sanja, ĆATIĆ, Amir, GODEC, Matjaž, PAULIN, Irena and DONIK, Črtomir, 2024, Laser powder bed fusion parameters optimization for enhanced mechanical properties of EOS Co-Cr dental alloy. Materials [online]. 2024. Vol. 17, no. 20,  4993, p. 1–15. [Accessed 21 April 2025]. DOI 10.3390/ma17204993. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=20543
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Record is a part of a journal

Title:Materials
Shortened title:Materials
Publisher:MDPI
ISSN:1996-1944
COBISS.SI-ID:33588485 New window

Document is financed by a project

Funder:Other - Other funder or multiple funders
Project number:KK.01.1.1.07.0013
Name:Innovative Ti-Mg dental implants for the world market

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

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