TY - JOUR

T1 - Investigations on tailored forming of aisi 52100 as rolling bearing raceway

AU - Coors, Timm

AU - Mildebrath, Maximilian

AU - Büdenbender, Christoph

AU - Saure, Felix

AU - Faqiri, Mohamad Yusuf

AU - Kahra, Christoph

AU - Prasanthan, Vannila

AU - Chugreeva, Anna

AU - Matthias, Tim

AU - Budde, Laura

AU - Pape, Florian

AU - Nürnberger, Florian

AU - Hassel, Thomas

AU - Hermsdorf, Jörg

AU - Overmeyer, Ludger

AU - Breidenstein, Bernd

AU - Denkena, Berend

AU - Behrens, Bernd Arno

AU - Maier, Hans Jürgen

AU - Poll, Gerhard

N1 - Funding information: This research was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under grant number 252662854.

PY - 2020/10/13

Y1 - 2020/10/13

N2 - Hybrid cylindrical roller thrust bearing washers of type 81212 were manufactured by tailored forming. An AISI 1022M base material, featuring a sufficient strength for structural loads, was cladded with the bearing steel AISI 52100 by plasma transferred arc welding (PTA). Though AISI 52100 is generally regarded as non-weldable, it could be applied as a cladding material by adjusting PTA parameters. The cladded parts were investigated after each individual process step and subsequently tested under rolling contact load. Welding defects that could not be completely eliminated by the subsequent hot forming were characterized by means of scanning acoustic microscopy and micrographs. Below the surface, pores with a typical size of ten µm were found to a depth of about 0.45 mm. In the material transition zone and between individual weld seams, larger voids were observed. Grinding of the surface after heat treatment caused compressive residual stresses near the surface with a relatively small depth. Fatigue tests were carried out on an FE8 test rig. Eighty-two percent of the calculated rating life for conventional bearings was achieved. A high failure slope of the Weibull regression was determined. A relationship between the weld defects and the fatigue behavior is likely.

AB - Hybrid cylindrical roller thrust bearing washers of type 81212 were manufactured by tailored forming. An AISI 1022M base material, featuring a sufficient strength for structural loads, was cladded with the bearing steel AISI 52100 by plasma transferred arc welding (PTA). Though AISI 52100 is generally regarded as non-weldable, it could be applied as a cladding material by adjusting PTA parameters. The cladded parts were investigated after each individual process step and subsequently tested under rolling contact load. Welding defects that could not be completely eliminated by the subsequent hot forming were characterized by means of scanning acoustic microscopy and micrographs. Below the surface, pores with a typical size of ten µm were found to a depth of about 0.45 mm. In the material transition zone and between individual weld seams, larger voids were observed. Grinding of the surface after heat treatment caused compressive residual stresses near the surface with a relatively small depth. Fatigue tests were carried out on an FE8 test rig. Eighty-two percent of the calculated rating life for conventional bearings was achieved. A high failure slope of the Weibull regression was determined. A relationship between the weld defects and the fatigue behavior is likely.

KW - AISI 52100

KW - Bearing fatigue life

KW - Hybrid bearing

KW - Plasma transferred arc welding

KW - Residual stress

KW - Scanning acoustic microscopy

KW - Tailored forming

UR - http://www.scopus.com/inward/record.url?scp=85092493093&partnerID=8YFLogxK

U2 - 10.3390/met10101363

DO - 10.3390/met10101363

M3 - Article

AN - SCOPUS:85092493093

VL - 10

SP - 1

EP - 19

JO - Metals

JF - Metals

SN - 2075-4701

IS - 10

M1 - 1363

ER -