Notch fatigue performance of DP600 steel under different pre-straining paths

Ghosal, Puja; Paul, Surajit Kumar; Das, Bimal; Chinara, Manaswini; Arora, Kanwer Singh

doi:10.1016/j.tafmec.2020.102630

Cited by 21 publications

(8 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…No obvious change occurred in the elastic modulus. Elongation generally weakened under the tension path after pre-tension [23,24]. The stress and strain of the specimen showed obvious anisotropy.…”

Section: Resultsmentioning

confidence: 99%

Effects of anisotropy and pre-strain on the shear fatigue behaviour of DP600 steel

Zhang

Yue

Bao

et al. 2022

Materials Science and Technology

View full text Add to dashboard Cite

The effects of anisotropy and pre-strain on the low-cycle-fatigue properties of DP600 steel sheet under shear path were investigated. Fully reversed strain-controlled fatigue tests were performed along the 0° and 90° directions with the initial strain direction. The cyclic-loading amplitude determined whether the pre-strained material had a hardening process. The high dislocation density in the crystals of pre-strained material can promote the formation of low-energy substructures, obviously accelerating the cyclic-softening rate and reducing the fatigue life. Average plastic strain energy density was affected by the pre-straining state and loading direction and had a linear relationship with the strain amplitude. Overall, these results can be used to verify the calculation model of structural parts.

show abstract

Section: Resultsmentioning

confidence: 99%

Effects of anisotropy and pre-strain on the shear fatigue behaviour of DP600 steel

Zhang

Yue

Bao

et al. 2022

Materials Science and Technology

View full text Add to dashboard Cite

show abstract

“…Based upon these results, the same authors 38 also proposed a modified strain-life equation to consider the effect of different pre-strain paths. Das et al [39][40][41][42] studied the effect of pre-strain on the tensile, HCF, LCF, and notch fatigue performance of a DP600 steel sheet. Testing was performed in both parallel and orthogonal direction to pre-strain.…”

Section: Influence Of Pre-strainmentioning

confidence: 99%

Influence of pre‐strain and bake hardening on the static and fatigue strength of a DP600 steel sheet

Kusch

Crivelli

Diviani

et al. 2023

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

The influence of pre‐strain on the tensile and fatigue properties of a dual phase DP600 steel was studied. The material was pre‐strained by uni‐axial tension in rolling and transverse direction. Thereafter, specimens were cut from the deformed plates in parallel or orthogonal to pre‐strain direction. It was found that pre‐strain increases yield and tensile strength. Results suggested that strain path change primarily affects the elastic‐plastic transition during early stage of reloading. Pre‐strained specimens showed an increase in high cycle regimes as a consequence of yield strength increment, irrespective of imposed pre‐straining direction. A modified stress life equation that accounts for pre‐strain was proposed and showed good agreement with experimental data. Bake hardening enhanced both tensile and high cycle fatigue resistance. Walker equation was successfully fitted to account for tensile mean stress. In low cycle fatigue, negligible influence of pre‐strain was observed due to cyclic softening and residual stress relaxation.

show abstract

“…Based upon these results, the same authors 38 also proposed a modified strain-life equation to consider the effect of different pre-strain paths. Das et al [39][40][41][42] studied the effect of pre-strain on the tensile, HCF, LCF and notch fatigue performance of a DP600 steel sheet. Testing was performed in both parallel and orthogonal direction to pre-strain.…”

Section: Influence Of Pre-strainmentioning

confidence: 99%

Influence of pre-strain and bake hardening on the static and fatigue strength of a DP600 steel sheet

Kusch

Crivelli

Diviani

et al. 2023

Preprint

View full text Add to dashboard Cite

The influence of pre-strain on the tensile and fatigue properties of a dual phase DP600 was studied. The material was pre-strained by uni-axial tension in rolling and transverse direction. Thereafter, specimens were cut from the deformed plates in parallel or orthogonal to pre-strain direction. It was found that pre-strain increases yield and tensile strength. Results suggested that strain path change primarily affects the elastic-plastic transition during early stage of reloading. Pre-strained specimens showed an increase in high cycle regimes as a consequence of yield strength increment, irrespective of imposed pre-straining direction. A modified stress life equation which accounts for pre-strain was proposed and showed good agreement with experimental data. Bake hardening enhanced both tensile and high cycle fatigue resistance. Walker equation was successfully fitted to account tensile mean stress. In low cycle fatigue, negligible influence of pre-strain was observed due to cyclic softening and residual stress relaxation.

show abstract

Notch fatigue performance of DP600 steel under different pre-straining paths

Cited by 21 publications

References 29 publications

Effects of anisotropy and pre-strain on the shear fatigue behaviour of DP600 steel

Effects of anisotropy and pre-strain on the shear fatigue behaviour of DP600 steel

Influence of pre‐strain and bake hardening on the static and fatigue strength of a DP600 steel sheet

Influence of pre-strain and bake hardening on the static and fatigue strength of a DP600 steel sheet

Contact Info

Product

Resources

About