Dalibor Viderščak (Avtor), Zdravko Schauperl (Avtor), Biserka Runje (Avtor), Sanja Šolić (Avtor), Amir Ćatić (Avtor), Matjaž Godec (Avtor), Irena Paulin (Avtor), Črtomir Donik (Avtor)

Povzetek

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.

Ključne besede

LPBF;production parameters;Co-Cr dental alloy;CCD;mechanical properties;ANOVA;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: IMT - Inštitut za kovinske materiale in tehnologije
Založnik: MDPI
UDK: 621.7 :620.1:669.2/.8
COBISS: 211864579 Povezava se bo odprla v novem oknu
ISSN: 1996-1944
Št. ogledov: 43
Št. prenosov: 8096
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Komentar vira: Nasl. z nasl. zaslona; Opis vira z dne 17. 10. 2024;
Strani: str. 1-15
Letnik: ǂVol. ǂ17
Zvezek: ǂiss. ǂ20, [article no.] 4993
Čas izdaje: Oct. 2024
DOI: 10.3390/ma17204993
ID: 25326206