Prediction of Fracture Behavior of 20MnCr5 and S275JR Steel Based on Numerical Crack Driving Force Assessment

Vukelić, Goran; Brnić, Josip

doi:10.1061/(asce)mt.1943-5533.0001071

Cited by 2 publications

(2 citation statements)

References 19 publications

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“…Although J-integral is independent of the chosen path, this was done in order to account for any possible J-value variations in the vicinity and away from the crack tip. This procedure had already been verified in cases when numerically-obtained parameters have been found to be corresponding with the experimental values [22].…”

Section: Predicted Fracture Behavior Of Considered Materialsmentioning

confidence: 99%

Predicted Fracture Behavior of Shaft Steels with Improved Corrosion Resistance

Vukelić

Brnić

2016

Metals

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Abstract:One of the crucial steps in the shaft design process is the optimal selection of the material. Two types of shaft steels with improved corrosion resistances, 1.4305 and 1.7225, were investigated experimentally and numerically in this paper in order to determine some of the material characteristics important for material selection in the engineering design process. Ultimate tensile strength and yield strength have been experimentally obtained, proving that steel 1.4305 has higher values of both. In addition, J-integral is numerically determined as a measure of crack driving force for finite element models of standardized fracture specimens (single-edge notched bend and disc compact tension). Obtained J values are plotted versus specimen crack growth size (∆a) for different specimen geometries (a/W). Higher resulting values of J-integral for steel 1.4305 as opposed to 1.7225 can be noted. Results can be useful as a fracture parameter in fracture toughness assessment, although this procedure differs from experimental analysis.

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Section: Predicted Fracture Behavior Of Considered Materialsmentioning

confidence: 99%

Predicted Fracture Behavior of Shaft Steels with Improved Corrosion Resistance

Vukelić

Brnić

2016

Metals

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“…The 20MnCr5 steels applied in automobile components such as crankshafts, gears, and connecting rods that are subjected to high stresses. 31 The fracture behavior of 20MnCr5 steel was evaluated against S275JR steel to understand its utility in above specific applications 32 and found superior. In gear manufacturing process, the 20MnCr5 steels were extensively used.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical machining of 20MnCr5 alloy steel with magnetic flux assisted vibrating tool

Ayyappan¹,

Sivakumar

Kalaimathi

2015

Proceedings of the Institution of Mechanical Engineers, Part C:

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Utilization of full potential of electrochemical machining (ECM) is not yet achieved because of its lack of accuracy, difficulty in proper tool design and control of parameters. The enhancement of performance of ECM is still a subject of concern in this modern manufacturing world. In this work, low frequency vibrating tool assisted by a magnetic flux was used as an efficient hybrid technique in ECM for improving material removal rate (MRR) and surface roughness (Ra). This paper presents a development of mathematical model correlating MRR and Ra with machining conditions such as voltage, electrolyte concentration, and inter-electrode gap. The significance of ECM process parameters has been investigated using contour plots. The inter-electrode gap (IEG) is considered slightly higher than the maximum tool amplitude that otherwise leads to tool damage. Results indicate that magnetic flux-assisted vibrating tool increases the MRR from 10% to 96%. A magnetic flux-assisted vibrating tool in ECM facilitates and drives out the sludge in the IEG to improve the machining performance. MRR is enhanced due to the movement of ions triggered by magnetic flux, which assures an increase in anodic current. A slight increase in Ra was also noted in comparison to machining with aqueous NaCl electrolyte alone.

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Prediction of Fracture Behavior of 20MnCr5 and S275JR Steel Based on Numerical Crack Driving Force Assessment

Cited by 2 publications

References 19 publications

Predicted Fracture Behavior of Shaft Steels with Improved Corrosion Resistance

Predicted Fracture Behavior of Shaft Steels with Improved Corrosion Resistance

Electrochemical machining of 20MnCr5 alloy steel with magnetic flux assisted vibrating tool

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