Optimization of cutting parameters of residual stresses in simultaneous turning technique

Kanakaraju, Veldi; Gunjal, Shubham; Rathinam, Kalidasan; Sharma, Parveen

doi:10.1016/j.matpr.2020.03.248

Cited by 4 publications

(1 citation statement)

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“…Due to different thermal expansion coefficients of the materials, delayed cooling of the subsurface and core, as well as local structural transformations limited to the surface layer; residual stresses were caused after forging and the heat treatment process, which were modified by subsequent machining of the hybrid component [22,23]. Residual stresses have a significant influence on the operating behavior and therefore the lifetime of a component.…”

Section: Residual Stress Measurementsmentioning

confidence: 99%

Investigations on Tailored Forming of AISI 52100 as Rolling Bearing Raceway

Coors

Mildebrath

Büdenbender

et al. 2020

Metals

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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.

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Section: Residual Stress Measurementsmentioning

confidence: 99%