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Tribological behavior of additively manufactured 17-4 PH stainless steel : Influence due to the process and post-treatment

Title data

Orgeldinger, Christian ; Seynstahl, Armin ; Rosnitschek, Tobias ; Ramos-Grez, Jorge ; Marian, Max ; Tremmel, Stephan:
Tribological behavior of additively manufactured 17-4 PH stainless steel : Influence due to the process and post-treatment.
2023
Event: 9th International Tribology Conference , 25.09.-30.09.2023 , Fukuoka, Japan.
(Conference item: Conference , Speech )

Abstract in another language

In recent years, sustainable and resource-saving product development has become increasingly
important. Especially in product individualization, prototypes, and small series, additive manufacturing
(AM) processes are gaining more and more acceptance compared to conventional manufacturing
techniques. AM processes allow completely new design freedom at an early stage of product
development. In contrast to conventional manufacturing processes, almost any complex geometries can
be developed, which –in combination with topology optimization processes –enables the full exploitation
of lightweight design potential. Prototypes, spare parts, or individualized products can thus be realized
with very short production times.
While AM processes are increasingly becoming a focus in product development, applications in the
tribotechnical field are still scarce, which is due to the fact that additively manufactured surfaces without
post-treatment are typically quite rough and thus are tribologically unfavorable. Particularly in the case of
metallic components, the full potential of AM can only be exploited by appropriate post-treatment to
ensure a tribological behavior comparable to conventionally manufactured parts.
The aim of this work is to investigate the extent to which the process itself has an influence on the
tribological behavior of AM metal components. Therefore, metal extrusion-based AM and selective laser
melting are employed to produce test specimens made of 17-4 PH stainless steel, which is widely
employed in medical technology, energy technology, aerospace, the chemical industry, and plant
engineering. Besides basic surface characterization, the friction and wear behavior is investigated on a
ball-on-disc tribometer under dry (non-lubricated) conditions. Thereby, the fabricated specimens are
compared in untreated and post-treated (polishing) states as well as for different build space orientations
and, in the case of metal extrusion-based AM, for POM- and paraffin-based binding systems. Thus, the
influence of the manufacturing process as well as post-treatment is discussed.

Further data

Item Type: Conference item (Speech)
Refereed: Yes
Keywords: tribomaterials; surface modifications; additive manufacturing; friction; wear
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Engineering Design and CAD > Chair Engineering Design and CAD - Univ.-Prof. Dr.-Ing Stephan Tremmel
Research Institutions > Research Units > Forschungsstelle für Additive Innovationen - Campus Additive.Innovationen (CA.I)
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 09 Nov 2023 09:26
Last Modified: 09 Nov 2023 09:26
URI: https://eref.uni-bayreuth.de/id/eprint/87503