Investigations on Additively Manufactured Stainless Bearings

authored by: Timm Coors, Mohamad Yusuf Faqiri, Felix Saure, Christoph Kahra, Christoph Büdenbender, Julius Peddinghaus, Vannila Prasanthan, Florian Pape, Thomas Hassel, Sebastian Herbst, Florian Nürnberger, Hendrik Wester, Johanna Uhe, Bernd Breidenstein, Berend Denkena, Bernd Arno Behrens, Gerhard Poll, Hans Jürgen Maier
Abstract: Additive manufacturing with multi-material design offers great possibilities for lightweight and function-integrated components. A process chain was developed in which hybrid steel–steel-components with high fatigue strength were produced. For this, a material combination of stainless powder material Rockit^® (0.52 wt.% C, 0.9% Si, 14% Cr, 0.4% Mo, 1.8% Ni, 1.2% V, bal. Fe) cladded onto ASTM A572 mild steel by plasma arc powder deposition welding was investigated. Extensive material characterization has shown that defect-free claddings can be produced by carefully adjusting the welding process. With a tailored heat treatment strategy and machining of the semi-finished products, bearing washers for a thrust cylindrical roller bearing were produced. These washers showed a longer fatigue life than previously produced bearing washers with AISI 52100 bearing steel as cladding. It was also remarkable that the service life with the Rockit^® cladding material was longer than that of conventional monolithic AISI 52100 washers. This was reached through a favourable microstructure with finely distributed vanadium and chromium carbides in a martensitic matrix as well as the presence of compressive residual stresses, which are largely retained even after testing. The potential for further enhancement of the cladding performance through Tailored Forming was investigated in compression and forging tests and was found to be limited due to low forming capacity of the material.
Organisation(s): Institute of Machine Elements and Engineering Design
Institute of Materials Science
Institute of Metal Forming and Metal Forming Machines
Institute of Production Engineering and Machine Tools
Type: Article
Journal: COATINGS
Volume: 12
ISSN: 2079-6412
Publication date: 08.11.2022
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Surfaces and Interfaces, Surfaces, Coatings and Films, Materials Chemistry
Electronic version(s): https://doi.org/10.3390/coatings12111699 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{8902e71c616c4ccaa3194ffd3e81a502,
title = "Investigations on Additively Manufactured Stainless Bearings",
abstract = "Additive manufacturing with multi-material design offers great possibilities for lightweight and function-integrated components. A process chain was developed in which hybrid steel–steel-components with high fatigue strength were produced. For this, a material combination of stainless powder material Rockit{\textregistered} (0.52 wt.% C, 0.9% Si, 14% Cr, 0.4% Mo, 1.8% Ni, 1.2% V, bal. Fe) cladded onto ASTM A572 mild steel by plasma arc powder deposition welding was investigated. Extensive material characterization has shown that defect-free claddings can be produced by carefully adjusting the welding process. With a tailored heat treatment strategy and machining of the semi-finished products, bearing washers for a thrust cylindrical roller bearing were produced. These washers showed a longer fatigue life than previously produced bearing washers with AISI 52100 bearing steel as cladding. It was also remarkable that the service life with the Rockit{\textregistered} cladding material was longer than that of conventional monolithic AISI 52100 washers. This was reached through a favourable microstructure with finely distributed vanadium and chromium carbides in a martensitic matrix as well as the presence of compressive residual stresses, which are largely retained even after testing. The potential for further enhancement of the cladding performance through Tailored Forming was investigated in compression and forging tests and was found to be limited due to low forming capacity of the material.",
keywords = "additive manufacturing, bearing fatigue life, hybrid bearing, plasma transferred arc welding, residual stress, Rockit, tailored forming",
author = "Timm Coors and Faqiri, {Mohamad Yusuf} and Felix Saure and Christoph Kahra and Christoph B{\"u}denbender and Julius Peddinghaus and Vannila Prasanthan and Florian Pape and Thomas Hassel and Sebastian Herbst and Florian N{\"u}rnberger and Hendrik Wester and Johanna Uhe and Bernd Breidenstein and Berend Denkena and Behrens, {Bernd Arno} and Gerhard Poll and Maier, {Hans J{\"u}rgen}",
note = "Funding Information: We would like to thank Senad Dizdar, H{\"o}g{\"a}n{\"a}s AB, for providing us with a first sample of the two Rockit powders used. The rest of the material required for manufacturing was purchased. The results presented in this paper were obtained within the Collaborative Research Centre 1153 “Process chain to produce hybrid high performance components by Tailored Forming” in the subprojects A2, A4, B2, B4, C1, C3, and T1. The authors thank the German Research Foundation (DFG) for their financial support of this project. The publication of this article was funded by the Open Access Fund of the Leibniz Universit{\"a}t Hannover. {\textregistered} Funding Information: This research was funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) under grant number 252662854.",
year = "2022",
month = nov,
day = "8",
doi = "10.3390/coatings12111699",
language = "English",
volume = "12",
journal = "COATINGS",
issn = "2079-6412",
publisher = "MDPI AG",
number = "11",
}