Details
| Original language | English |
|---|---|
| Article number | 1699 |
| Journal | COATINGS |
| Volume | 12 |
| Issue number | 11 |
| Publication status | Published - 8 Nov 2022 |
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.
Keywords
- additive manufacturing, bearing fatigue life, hybrid bearing, plasma transferred arc welding, residual stress, Rockit, tailored forming
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Materials Science(all)
- Surfaces, Coatings and Films
- Materials Science(all)
- Materials Chemistry
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In: COATINGS, Vol. 12, No. 11, 1699, 08.11.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Investigations on Additively Manufactured Stainless Bearings
AU - Coors, Timm
AU - Faqiri, Mohamad Yusuf
AU - Saure, Felix
AU - Kahra, Christoph
AU - Büdenbender, Christoph
AU - Peddinghaus, Julius
AU - Prasanthan, Vannila
AU - Pape, Florian
AU - Hassel, Thomas
AU - Herbst, Sebastian
AU - Nürnberger, Florian
AU - Wester, Hendrik
AU - Uhe, Johanna
AU - Breidenstein, Bernd
AU - Denkena, Berend
AU - Behrens, Bernd Arno
AU - Poll, Gerhard
AU - Maier, Hans Jürgen
N1 - Funding Information: We would like to thank Senad Dizdar, Högänäs 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 Universität Hannover. ® Funding Information: This research was funded by the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) under grant number 252662854.
PY - 2022/11/8
Y1 - 2022/11/8
N2 - 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.
AB - 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.
KW - additive manufacturing
KW - bearing fatigue life
KW - hybrid bearing
KW - plasma transferred arc welding
KW - residual stress
KW - Rockit
KW - tailored forming
UR - http://www.scopus.com/inward/record.url?scp=85149486763&partnerID=8YFLogxK
U2 - 10.3390/coatings12111699
DO - 10.3390/coatings12111699
M3 - Article
AN - SCOPUS:85149486763
VL - 12
JO - COATINGS
JF - COATINGS
SN - 2079-6412
IS - 11
M1 - 1699
ER -