On the Bauschinger effect in dual phase steel at high levels of strain

Weiß, Matthias; Kupke, Andreas; Manach, Pierre‐Yves; Galdos, Lander; Hodgson, Peter

doi:10.1016/j.msea.2015.07.037

Cited by 33 publications

(13 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reduction of strength due to plastic pre-strain is a question of major relevance in various research and application areas. This finding furthered the advancements in the theory of the mechanical behaviour of materials in the plastic regime under cyclic loading [1,3,[8][9][10][11][12][13][14][15][16], as well as the technological innovations in cold plastic strain conforming processes [17][18][19][20]. On the one hand, deeper knowledge about the material mechanical response allows one to optimise the plastic strain conforming processes, avoiding excessive material damage in load reversals, and on the other, this facilitates more accurate predictions (e.g., from numerical simulations) of the performance of materials undergoing cyclic strain hardening.…”

Section: Introductionmentioning

confidence: 62%

Analysis of the Bauschinger Effect in Cold Drawn Pearlitic Steels

Toribio

Kharin

Ayaso

et al. 2020

Metals

View full text Add to dashboard Cite

Prestressing steel wires usually undergo cyclic loading in service. Therefore, it is of interest to analyse certain features of their mechanical behaviour under this type of loading, such as the Bauschinger effect (BE) or the hardening rule, that fit the real mechanical behaviour appropriately. In this study, different samples of high strength pearlitic steel wires were subjected to cyclic tension-compression load exceeding the material yield strength, thus generating plastic strains. From the experimental results, various parameters were obtained revealing that analysed steels exhibited the so-called Masing type BE. In addition, the variation of the BE characteristics (of the effective and internal stresses) with the applied plastic pre-strain indicated that the studied materials followed a mixed strain hardening rule with the domination of the kinematic component.

show abstract

Section: Introductionmentioning

confidence: 62%

Analysis of the Bauschinger Effect in Cold Drawn Pearlitic Steels

Toribio

Kharin

Ayaso

et al. 2020

Metals

View full text Add to dashboard Cite

show abstract

“…Higher the , lower is the re-yielding stress, which decreases the Bauschinger ratio in the VPSC-RGBV model. According to Kim et al (2012) and Weiss et al (2015), at a higher martensite fraction in DP steel, a lower Bauschinger ratio is obtained, which suggests that the increase in the Bauschinger effect can be attributed to the presence of martensite. Therefore, it is reasonable to obtain a higher value of for martensite than ferrite.…”

Section: Optimized Materials Parameters Of Dp Steelmentioning

confidence: 99%

A crystal plasticity model for describing the anisotropic hardening behavior of steel sheets during strain-path changes

Kim

Barlat

Lee

et al. 2018

International Journal of Plasticity

View full text Add to dashboard Cite

In the present study, a viscoplastic self-consistent crystal plasticity model (VPSC-RGBV), which accounts for various microstructural features, including the accumulation and annihilation of dislocations due to slip activity and latent hardening originated from interactions between gliding dislocations on different slip planes, is described. The simulation results of the VPSC-RGBV model are compared with those of a macro-mechanical distortional plasticity model, the so-called homogeneous anisotropic hardening (HAH), and experimental data pertaining to metals undergoing complex loading histories. The differences between the simulated and experimental results under nonproportional loading, including 1) the stress-strain curve, 2) instantaneous r-value after strain-path change, and 3) yield surface evolution, are discussed. Finally, potential improvements are suggested for VPSC-RGBV model.

show abstract

“…It can be seen that there is a zone of nearly constant shear strain in the center region of the gauge area while towards the ends the shear strain becomes non-uniform. According to [33], the difference of calculating the average of the shear strain over the full length of the gauge area or over a reduced area is negligible. This leads to a strain tensor that is close to the radial path in the principal strain space and material anisotropy may therefore only have a minor effect on the material response in forward and reverse shear.…”

Section: Homogeneity Of the Strainmentioning

confidence: 99%

Anti-Buckling Device for Ultra-Thin Metallic Sheets Under Large and Reversed Shear Strain Paths

et al. 2017

Self Cite

View full text Add to dashboard Cite

The kinematic contribution to the hardening of ultra-thin metallic sheets characterized by monotonic and reversed simple shear tests is of high interest in the sheet metal forming industry, because of its influence on the accurate prediction of springback. However, ultra-thin sheets are very sensitive to buckling when submitted to shear stress because of the large gauge width to thickness ratio, the stress perturbations induced by the clamping and the alignment of sample, which thus limit the attainable strain levels using conventional simple shear devices. In this paper, a new simple shear test dedicated to ultra-thin metallic sheets is proposed through the development of a specific support. A transparent glass part enables the application of a normal tightening force to prevent the out-of-plane buckling of the sheets whilst also allowing full field strain measurements to be taken. Firstly, the capabilities of the device are shown by comparing the mechanical behavior in a simple shear test on an austenitic stainless steel with and without the support. A good reproducibility of the flow curves is observed with the support and large shear strains are reached without buckling. Secondly, the influence of friction due to the contact between the sample and the support is checked by finite elements simulations and shown to be negligible compared to the shearing force. Finally, monotonic and reversed shear tests on a pure copper sheet with a thickness of 0. were performed up to rupture without buckling, these were not previously conceivable on such a low thichness, and demonstrate the potential of the proposed device.

show abstract

On the Bauschinger effect in dual phase steel at high levels of strain

Cited by 33 publications

References 33 publications

Analysis of the Bauschinger Effect in Cold Drawn Pearlitic Steels

Analysis of the Bauschinger Effect in Cold Drawn Pearlitic Steels

A crystal plasticity model for describing the anisotropic hardening behavior of steel sheets during strain-path changes

Anti-Buckling Device for Ultra-Thin Metallic Sheets Under Large and Reversed Shear Strain Paths

Contact Info

Product

Resources

About