Advances in anisotropy of plastic behaviour and formability of sheet metals

Banabic, Dorel; Barlat, Frédéric; Cazacu, Oana; Kuwabara, Toshihiko

doi:10.1007/s12289-020-01580-x

Cited by 78 publications

(21 citation statements)

References 399 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The consideration of an orthotropic material with asymmetry in axial tension-compression stresses leads to a nonsymmetric yield surface evolution. [14,15,71,73,75] To macroscopically describe the orthotropic elasticity and asymmetric crystallographic plasticity of Ti-6Al-4V, the CPB06 yield criterion [71,72] is chosen.…”

Section: Cpb06 Yield Criterionmentioning

confidence: 99%

Nanomechanical Characterization of the Deformation Response of Orthotropic Ti–6Al–4V

et al. 2021

View full text Add to dashboard Cite

The research interest in titanium alloys lies in the fact that their exceptional mechanical properties make them ideal for specific industrial applications, such as biomedical, aerospace, and military industries. [1][2][3] Despite its high cost, Ti-6Al-4V alloy is currently the most widely used titanium alloy, [4] combining good biocompatibility and corrosion resistance, [5][6][7][8][9][10] high strength, low weight, and ductility. [11][12][13][14][15][16] Several manufacturing processes among the aforementioned applications contemplate the implementation of material characterization procedures, either on pristine samples of the material or on previously manufactured parts. The most commonly applied experimental procedures to identify the macroscopic orthotropic elastoplastic properties of a material include monotonic tensile, [17,18] compression, [19,20] and shear [21,22] tests of material samples obtained from its orthogonal directions. The main limitations of these tests are the size of the specimens and their subsequent destruction,

show abstract

Section: Cpb06 Yield Criterionmentioning

confidence: 99%

Nanomechanical Characterization of the Deformation Response of Orthotropic Ti–6Al–4V

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Formability is an important aspect for the industrial usage of metallic materials [24]. Different models have been used for this task in previous studies, either using a phenomenological approach based on experimental results or using models based on physical principles, usually employing crystal plasticity.…”

Section: Modeling Of Formability Propertiesmentioning

confidence: 99%

Advanced Crystal Plasticity Modeling of Multi-Phase Steels: Work-Hardening, Strain Rate Sensitivity and Formability

et al. 2021

View full text Add to dashboard Cite

This work presents an advanced crystal plasticity model for the simulation of the mechanical behavior of multiphase advanced high-strength steels. The model is based on the Visco-Plastic Self-Consistent (VPSC) model and uses information about the material’s crystallographic texture and grain morphology together with a grain constitutive law. The law used here, based on the work of Pantleon, considers how dislocations are created and annihilated, as well as how they interact with obstacles such as grain boundaries and inclusions (carbides). Additionally, strain rate sensitivity is implemented using a phenomenological expression derived from literature data that does not require any fitting parameter. The model is applied to the study of two bainitic steels obtained by applying different heat treatments. After fitting the required parameters using tensile experiments in different directions at quasi-static and high strain rates, formability properties are determined using the model for the performance of virtual experiments: uniaxial tests are used to determine r-values and stress levels and biaxial tests are used for the calculation of yield surfaces and forming limit curves.

show abstract

“…The FLD is divided into an area of safe strains below the FLC and an area of strains above the FLC where excessive thinning or failure of the stamped part is likely to occur [25]. Methods for determining FLCs are described in more detail in [26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Formability Prediction of Laser-Welded Stainless Steel AISI 304 and AISI 430

Evin

Tomáš

2021

Metals

View full text Add to dashboard Cite

The effect of laser welding on the mechanical properties and the prediction of formability for austenitic stainless steel AISI 304 and ferritic steel AISI 430 when welded by a YLS-5000 fiber laser, were studied in the paper. The microstructure of the welded joint was analyzed using light microscopy. The mechanical properties were determined by static tensile testing. The forming limit diagrams were produced from notched samples at R5, R17, and R25 mm. The hardness values of the welded joint and the base material were determined using the Vickers method. Samples made of AISI 430 showed that the formability suffered due to laser welding. Longitudinal coarse ferrite grains were observed in the microstructure of the AISI 430 weld metal. The coarse-grained structure of the welded joint and the continuous interface along the centerline caused the failure of the AISI 430 laser-welded samples at significantly lower actual stress and strain values than were required to break the base material. No significant changes in the formability were observed in the AISI 304 samples after laser welding. The growth of dendrites was observed in the microstructure of the AISI 304 welded joint in a direction towards the centerline of the welded joint. A comparison of the experimentally determined FLD0 values and the values calculated from predictive equations showed that a better agreement was achieved for uniform elongation than for the strain hardening exponent. The manufacturability and economic efficiency of selected parts of an exhaust system by hydromechanical drawing were evaluated on the basis of the process capability index Cpk.

show abstract

Advances in anisotropy of plastic behaviour and formability of sheet metals

Cited by 78 publications

References 399 publications

Nanomechanical Characterization of the Deformation Response of Orthotropic Ti–6Al–4V

Nanomechanical Characterization of the Deformation Response of Orthotropic Ti–6Al–4V

Advanced Crystal Plasticity Modeling of Multi-Phase Steels: Work-Hardening, Strain Rate Sensitivity and Formability

Formability Prediction of Laser-Welded Stainless Steel AISI 304 and AISI 430

Contact Info

Product

Resources

About