Evaluation of recycled and reused metal powders for DMLS 3D printing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F24%3A43973696" target="_blank" >RIV/49777513:23210/24:43973696 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/1996-1944/17/24/6184" target="_blank" >https://www.mdpi.com/1996-1944/17/24/6184</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma17246184" target="_blank" >10.3390/ma17246184</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of recycled and reused metal powders for DMLS 3D printing

Popis výsledku v původním jazyce

Metal powders for additive manufacturing are expensive and producing new ones from mined metals has a negative ecological impact. In this work, recycled and reused metal powders from MS1 steel for Direct Metal Laser Sintering (DMLS) 3D printing were evaluated in the laboratory. The powders were recycled by melting followed by gas atomizing. Virgin, recycled and reused metal powders were evaluated using Scanning-Electron Microscopy (SEM), Energy-Dispersive X-Ray Spectroscopy (EDS), X-Ray Diffraction (XRD), metallography analysis, microhardness measurements, Particle Size Distribution (PSD), shape factor by Digital Image Processing (DIP) and flowability testing. The results showed that the particle distribution was modified after recycling. Kurtosis analysis revealed a reduction from -0,64 for virgin powder to -1,29 for recycled powders. A positive skewness was obtained a consequently, smaller particles were found in recycled powder. The shape factor was also modified and changed from 1,57 for virgin powders to 1,28 for recycled powders. The microstructure also changed and austenite was found in recycled powders. The microhardness of recycled powder decreased by 39% compared to the virgin powder. Recycled powders did not flow using two different funnels to evaluate their flowability. The flowability of used powder was reduced from 4,3 s to 2,9 s.

Název v anglickém jazyce

Evaluation of recycled and reused metal powders for DMLS 3D printing

Popis výsledku anglicky

Metal powders for additive manufacturing are expensive and producing new ones from mined metals has a negative ecological impact. In this work, recycled and reused metal powders from MS1 steel for Direct Metal Laser Sintering (DMLS) 3D printing were evaluated in the laboratory. The powders were recycled by melting followed by gas atomizing. Virgin, recycled and reused metal powders were evaluated using Scanning-Electron Microscopy (SEM), Energy-Dispersive X-Ray Spectroscopy (EDS), X-Ray Diffraction (XRD), metallography analysis, microhardness measurements, Particle Size Distribution (PSD), shape factor by Digital Image Processing (DIP) and flowability testing. The results showed that the particle distribution was modified after recycling. Kurtosis analysis revealed a reduction from -0,64 for virgin powder to -1,29 for recycled powders. A positive skewness was obtained a consequently, smaller particles were found in recycled powder. The shape factor was also modified and changed from 1,57 for virgin powders to 1,28 for recycled powders. The microstructure also changed and austenite was found in recycled powders. The microhardness of recycled powder decreased by 39% compared to the virgin powder. Recycled powders did not flow using two different funnels to evaluate their flowability. The flowability of used powder was reduced from 4,3 s to 2,9 s.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials

ISSN

1996-1944

e-ISSN

1996-1944

Svazek periodika

17

Číslo periodika v rámci svazku

24

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

13

Strana od-do

—

Kód UT WoS článku

001384610700001

EID výsledku v databázi Scopus

2-s2.0-85213289406