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Título
Microstructure–hardness–corrosion performance of 17–4 precipitation hardening stainless steels processed by selective laser melting in comparison with commercial alloy
Autor
Año del Documento
2022
Editorial
Springer
Descripción
Producción Científica
Documento Fuente
Metals and Materials International, 2022.
Zusammenfassung
The 17–4 Precipitation Hardening Stainless Steel (PH SS) manufactured by Selective Laser Melting (SLM) has wide appli-
cation perspectives, but they are limited due to defects and anisotropy. The selection of the appropriate process variables
plays a fundamental part in the microstructure and in the determination of the final mechanical and corrosion properties.
The main purpose of this study is to analyze the corrosion behavior, hardness and microstructure of 17–4 PH SS manufac-
tured by SLM in comparison to the commercial counterparts. The anisotropic behavior was investigated by analyzing the
microstructure–hardness and corrosion interrelationship, both in the surface of the construction platform and in the growth
direction of the element. The corrosion behavior of the SLM 17–4PH SS in its natural state was investigated in relation to
that of the 17–4 PH SS heat treated in a 0.1 M NaCl + 0.5 M H 2 SO 4 solution, using three electrochemical techniques. The
results confirmed that the corrosion resistance of SLM 17–4 PH SS was considerably better than that of the forging, even
after 60 days of immersion in the test solution. This was attributed to the absence of important manufacturing defects, to
the fine microstructure with an important amount of austenite produced by SLM, and to a small amount of non-metallic
inclusions precipitated as a result of the fast cooling and the high speed of solidification associated with the SLM process.
Materias Unesco
23 Química
33 Ciencias Tecnológicas
Palabras Clave
Additive manufacturing
Microstructures
Corrosion
ISSN
1598-9623
Revisión por pares
SI
Patrocinador
Ministerio de Ciencia, Innovación y Universidades (grant RTI2018-097990-B-I00)
Junta de Castilla y León (project VA275P18 y VA044G19)
Publicación en abierto financiada por el Consorcio de Bibliotecas Universitarias de Castilla y León (BUCLE), con cargo al Programa Operativo 2014ES16RFOP009 FEDER 2014-2020 DE CASTILLA Y LEÓN, Actuación:20007-CL - Apoyo Consorcio BUCLE
Junta de Castilla y León (project VA275P18 y VA044G19)
Publicación en abierto financiada por el Consorcio de Bibliotecas Universitarias de Castilla y León (BUCLE), con cargo al Programa Operativo 2014ES16RFOP009 FEDER 2014-2020 DE CASTILLA Y LEÓN, Actuación:20007-CL - Apoyo Consorcio BUCLE
Version del Editor
Propietario de los Derechos
© 2022 The Authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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