Influence of pre-straining path on high cycle fatigue performance of DP 600 steel

Das, Bimal; Singh, Akhilendra; Arora, Kanwer Singh; Shome, Mahadev; Paul, Surajit Kumar

doi:10.1016/j.ijfatigue.2019.05.017

Cited by 36 publications

(34 citation statements)

References 33 publications

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“…During forming of the bend specimen, an equivalent strain of 13% was noticed from the FE simulation (Figure 4). Straight specimens with uniaxial prestraining up to 12.5% in rolling direction and subsequent testing in the same direction resemble almost same amount of equivalent strain as the bend specimen 18 . Hence, the fatigue performance of both straight and bend specimens are compared.…”

Section: Resultsmentioning

confidence: 99%

“…The microstructure consists of martensite phase (grain size 2 μm) dispersed in ferrite (grain size 6 μm) matrix. 18 The monotonic properties of the investigated material are yield strength (439 MPa), ultimate tensile strength (656 MPa), uniform elongation (16.5%) and total elongation (28.5%). 19 The abovecharacterized properties meet the requirements according to EN 10149-2 and SAE J2340.…”

Section: Methodsmentioning

confidence: 99%

“…The composition of the steel (weight%) is as follows: C 0.06, Mn 1.14, Si 0.02, S 0.008, P 0.01, Al 0.03, Cr 0.7, Mo 0.04, Nb 0.012 and Fe balance. The microstructure consists of martensite phase (grain size ~2 μm) dispersed in ferrite (grain size ~6 μ m) matrix 18 . The monotonic properties of the investigated material are yield strength (439 MPa), ultimate tensile strength (656 MPa), uniform elongation (16.5%) and total elongation (28.5%) 19 .…”

Section: Methodsmentioning

confidence: 99%

“…in rolling direction and subsequent testing in the same direction resemble almost same amount of equivalent strain as the bend specimen. 18 Hence, the fatigue performance of both straight and bend specimens are compared. The stress life (S-N f ) curve obtained by testing of bend specimens is compared with those of prestrained specimen in Figure 11.…”

Section: Comparison Of Bend Specimen With Prestrained Straight Specmentioning

confidence: 99%

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Correlation between fatigue response of preformed bend DP600 steel specimen and wheel disc

Das

Singh

Paul

et al. 2020

Fatigue Fract Eng Mat Struct

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The present aim of this paper is to predict the cornering fatigue life of a wheel disc through a preformed bend DP600 steel specimen. To accomplish this objective, a newly designed preformed specimen with a bend radius equivalent to the weakest section of the wheel disc is fabricated by stamping operation followed by load-controlled high-cycle fatigue tests. Finite element (FE) simulation of stamping operation shows that an equivalent strain of 13% is induced to the bend specimen. Preformed bend specimen exhibits less fatigue resistance than the prestrained straight specimen for the same equivalent prestrain. A combined state of loading induces multiaxial stress state, giving rise to asymmetry of stresses along the thickness at the bend root of the DP600 steel specimen. Distribution of equivalent plastic strain and stress triaxiality from FE simulation indicates that fatigue crack occurs at the centre of the inner fibre of the bend root.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Comparison Of Bend Specimen With Prestrained Straight Specmentioning

confidence: 99%

See 2 more Smart Citations

Correlation between fatigue response of preformed bend DP600 steel specimen and wheel disc

Das

Singh

Paul

et al. 2020

Fatigue Fract Eng Mat Struct

Self Cite

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“…For example, the yield stress of dual-phase steel with 600 MPa strength increased after pre-straining, while its uniform elongation reduced. In addition, the low-cycle life expectancy decreased with an increase in pre-straining, and it increased in the high-cycle life span [12][13][14][15].…”

Section: Introductionmentioning

confidence: 98%

An Energy-Based Method for Lifetime Assessment on High-Strength-Steel Welded Joints under Different Pre-Strain Levels

Huang

Wang

et al. 2022

Materials

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Pre-loading on engineering materials or structures may produce pre-strain, especially plastic strain, which would change the fatigue failure mechanism during their service time. In this paper, an energy-based method for fatigue life prediction on high-strength-steel welded joints under different pre-strain levels was presented. Tensile pre-strain at three pre-strain levels of 0.2%, 0.35% and 0.5% was performed on the specimens of the material Q345, and the cyclic stress and strain responses with pre-loading were compared with those without pre-loading at the same strain level. The experimental work showed that the plastic strain energy density of pre-strained welded joints was enlarged, while the elastic strain energy density of pre-strained welded joints was reduced. Then, based on the strain energy density method, a fatigue life estimation model of the high-strength-steel welded joints in consideration of pre-straining was proposed. The predicted results agreed well with the test data. Finally, the validity of the developed model was verified by the experimental data from TWIP steel Fe-18 Mn and complex-phase steel CP800.

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Influence of tensile properties on hole expansion ratio investigated using a generative adversarial imputation network with explainable artificial intelligence

et al. 2023

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Influence of pre-straining path on high cycle fatigue performance of DP 600 steel

Cited by 36 publications

References 33 publications

Correlation between fatigue response of preformed bend DP600 steel specimen and wheel disc

Correlation between fatigue response of preformed bend DP600 steel specimen and wheel disc

An Energy-Based Method for Lifetime Assessment on High-Strength-Steel Welded Joints under Different Pre-Strain Levels

Influence of tensile properties on hole expansion ratio investigated using a generative adversarial imputation network with explainable artificial intelligence

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