The Scratch Resistance of a Plasma-Assisted DUPLEX-Treated 17-4 Precipitation-Hardened Stainless Steel Additively Manufactured by Laser Powder Bed Fusion
Por:
Gómez-Ortega, A, Pinilla-Bedoya, JA, Ortega-Portilla, C, Félix-Martínez, C, Mondragón-Rodríguez, GC, Espinosa-Arbeláez, DG, Pérez-Barrera, J, González-Carmona, JM, Urquiza, EAF
Publicada:
1 may 2024
Resumen:
Additive manufacturing (AM) or 3D printing of metals is gaining popularity due to its flexibility when fabricating parts with highly complex designs, as well as when simplifying manufacturing steps and optimizing process times. In this investigation, 17-4 PH stainless steel was additively manufactured using Laser Powder Bed Fusion (L-PBF), followed by functionalization through a DUPLEX treatment. This treatment involved a plasma-assisted nitriding process, followed by the deposition of an arc-PVD c-Al0.7Cr0.3N hard coating. The microstructural modifications resulting from plasma nitriding (such as the formation of Fe2,3N and Fe4N and the alpha N or expanded martensite phases) and the surface improvements with the c-Al0.7Cr0.3N coating on the 3D-printed 17-4 PH steel are evaluated in comparison to conventionally manufactured 17-4 PH steel. These microstructural characteristics are correlated with the mechanical response of the treated surfaces. As a result of the plasma nitriding process, the hardness of the 3D-printed 17-4 PH SS increased by approximately 260%. The wear, measured through dynamic and static scratch testing, was reduced by approximately 31%. This improvement was attributed to the modification of adhesive failure mechanisms, leading to a reduction in wear volume, improved coating adhesion, and enhanced scratch resistance.
Filiaciones:
Gómez-Ortega, A:
CIDESI, CONAHCYT Ctr Ingn & Desarrollo Ind, Ave Pie Cuesta 702, Queretaro 76125, Mexico
Pinilla-Bedoya, JA:
CINVESTAV, Libramiento Norponiente 2000, Queretaro 76230, Mexico
Ortega-Portilla, C:
CIDESI, CONAHCYT Ctr Ingn & Desarrollo Ind, Ave Pie Cuesta 702, Queretaro 76125, Mexico
Félix-Martínez, C:
CIDESI, CONAHCYT Ctr Ingn & Desarrollo Ind, Ave Pie Cuesta 702, Queretaro 76125, Mexico
Mondragón-Rodríguez, GC:
CIDESI, CONAHCYT Ctr Ingn & Desarrollo Ind, Ave Pie Cuesta 702, Queretaro 76125, Mexico
Espinosa-Arbeláez, DG:
CIDESI, CONAHCYT Ctr Ingn & Desarrollo Ind, Ave Pie Cuesta 702, Queretaro 76125, Mexico
Pérez-Barrera, J:
CIDESI, CONAHCYT Ctr Ingn & Desarrollo Ind, Ave Pie Cuesta 702, Queretaro 76125, Mexico
Univ Nacl Autonoma Mexico, Fac Ingn, Dept Termofluidos, Mexico City 04510, Mexico
González-Carmona, JM:
CIDESI, CONAHCYT Ctr Ingn & Desarrollo Ind, Ave Pie Cuesta 702, Queretaro 76125, Mexico
Urquiza, EAF:
CIDESI, CONAHCYT Ctr Ingn & Desarrollo Ind, Ave Pie Cuesta 702, Queretaro 76125, Mexico
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