2024-03-29T05:26:10Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/533472022-06-08T12:00:13Zcom_10324_1136com_10324_931com_10324_894col_10324_1218
Microstructure–hardness–corrosion performance of 17–4 precipitation hardening stainless steels processed by selective laser melting in comparison with commercial alloy
García Cabezón, Ana Cristina
Castro Sastre, María Ángeles
Fernández Abia, Ana Isabel
Rodríguez Méndez, María Luz
Martín Pedrosa, Fernando
Additive manufacturing
Microstructures
Corrosion
23 Química
33 Ciencias Tecnológicas
Producción Científica
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.
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
2022-05-16T09:08:40Z
2022-05-16T09:08:40Z
2022
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
https://doi.org/10.1007/s12540-021-01155-8
Metals and Materials International, 2022.
1598-9623
https://uvadoc.uva.es/handle/10324/53347
Metals and Materials International
2005-4149
eng
https://link.springer.com/article/10.1007/s12540-021-01155-8
Atribución 4.0 Internacional
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
© 2022 The Authors
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Springer