Transformation-induced plasticity in multiphase steels subjected to thermomechanical loading

Tjahjanto, D. D.; Turteltaub, Sergio; Suiker, A.S.J.; Zwaag, van der S

doi:10.1080/14786430802438150

Cited by 18 publications

(17 citation statements)

References 41 publications

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“…From a theoretical point of view, one important refinement in the present formulation relates to the decomposition of the entropy density, where the entropic counterpart of the thermal strain is derived from thermodynamic requirements. Although the resulting formulation is similar to that presented in Tjahjanto et al (2008b), the new entropy decomposition formally provides thermodynamic consistency. This model has been implemented in a fully-implicit numerical framework in order to solve simultaneously the equations of linear momentum and energy.…”

Section: Introductionmentioning

confidence: 95%

“…Tensile tests conducted at various externally-controlled temperatures have shown that the martensitic transformation rate strongly depends on temperature (see, e.g., Berrahmoune et al (2004) and Jiménez et al (2009)), which indicates that a comprehensive investigation of this class of steels should include their thermal behavior. The thermal sensitivity of TRIP steels has been studied under different thermal loading paths in Tjahjanto et al (2008b), where it was shown that the onset of inelastic response decreases with temperature. Nonetheless, that study also showed that upon continued deformation, the strength of a TRIP steel becomes the largest at the lowest temperature considered in the analyses.…”

Section: Introductionmentioning

confidence: 99%

“…The model, presented in Section 2, is based on the work originally proposed in Suiker (2005, 2006b), which was expanded in Tjahjanto et al (2008a) to account for crystalline plasticity in the austenitic phase and the surrounding matrix and further extended in Tjahjanto et al (2008b) to incorporate thermoelastic coupling effects. From a theoretical point of view, one important refinement in the present formulation relates to the decomposition of the entropy density, where the entropic counterpart of the thermal strain is derived from thermodynamic requirements.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, that study also showed that upon continued deformation, the strength of a TRIP steel becomes the largest at the lowest temperature considered in the analyses. The simulations presented in Tjahjanto et al (2008b) were carried out under the assumption that the temperature was externally-controlled and uniform within the sample, hence the energy equation was trivially satisfied. However, during actual operational conditions, the temperature is usually not controlled, hence the thermal behavior of the material depends on the internal heat generated by inelastic processes (transformation and plasticity).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Coupled thermomechanical analysis of transformation-induced plasticity in multiphase steels

Yadegari

Turteltaub

Suiker

2012

Mechanics of Materials

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Coupled thermomechanical analysis of transformation-induced plasticity in multiphase steels

Yadegari

Turteltaub

Suiker

2012

Mechanics of Materials

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“…These experimental results led to the development of advanced micromechanical models for the multiphase TRIP microstructure Tjahjanto et al, 2008;Choi et al, 2008Choi et al, , 2009. So far, limited work has been done to investigate the structural behaviour of TRIP steels under shear loading and more complicated mechanical testing conditions (Lacroix et al, 2008) in detail.…”

Section: Introductionmentioning

confidence: 99%

Position-dependent shear-induced austenite–martensite transformation in double-notched TRIP and dual-phase steel samples

et al. 2014

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While earlier studies on transformation-induced-plasticity (TRIP) steels focused on the determination of the austenite-to-martensite decomposition in uniform deformation or thermal fields, the current research focuses on the determination of the local retained austenite-to-martensite transformation behaviour in an inhomogeneous yet carefully controlled shear-loaded region of double-notched TRIP and dual-phase (DP) steel samples. A detailed powder analysis has been performed to simultaneously monitor the evolution of the phase fraction and the changes in average carbon concentration of metastable austenite together with the local strain components in the constituent phases as a function of the macroscopic stress and location with respect to the shear band. The metastable retained austenite shows a mechanically induced martensitic transformation in the localized shear zone, which is accompanied by an increase in average carbon concentration of the remaining austenite due to a preferred transformation of the austenite grains with the lowest carbon concentration. At the later deformation stages the geometry of the shear test samples results in the development of an additional tensile component. The experimental strain field within the probed sample area is in good agreement with finite element calculations. The strain development observed in the low-alloyed TRIP steel with metastable austenite is compared with that of steels with the same chemical composition containing either no austenite (a DP grade) or stable retained austenite (a TRIP grade produced at a long bainitic holding time). The transformation of metastable austenite under shear is a complex interplay between the local microstructure and the evolving strain fields.

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Consistent modeling of the coupling between crystallographic slip and martensitic phase transformation for mechanically induced loadings

Carvalho

Bortoli

Pires

2022

Numerical Meth Engineering

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A computational framework is proposed to model anisotropic metallic polycrystals subjected to mechanically induced loadings. It enables the simulation of crystal‐plasticity‐like phenomena at finite strains. The unified framework of thermodynamically consistent constitutive equations is formulated such that it couples the crystallographic slip and martensitic transformation theories. The constitutive description for the slip plasticity evolution incorporates an anisotropic hyperelastic law with self and latent‐hardening. The mechanically induced martensite formation kinematics is based on the crystallographic theory of martensitic transformations. The complete set of highly coupled equations is expressed in a single system of equations and solved by a monolithic solution procedure. It is based on the Newton–Raphson methodology and incorporates the complete linearisation leading to asymptotic quadratic rates of convergence. The quasi‐static discretized evolution equations are integrated with a fully implicit scheme, except for the critical resolved slip stresses, which employ the generalized midpoint rule. The plastic flow is integrated with an implicit exponential integrator to exactly preserve the plastic incompressibility. Viscous regularizations for both deformation mechanisms are pursued to overcome numerical difficulties and model the behavior over a wide range of strain‐rate sensitivities. Numerical examples are presented to demonstrate the efficiency and predictive capability of the methodology.

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Transformation-induced plasticity in multiphase steels subjected to thermomechanical loading

Cited by 18 publications

References 41 publications

Coupled thermomechanical analysis of transformation-induced plasticity in multiphase steels

Coupled thermomechanical analysis of transformation-induced plasticity in multiphase steels

Position-dependent shear-induced austenite–martensite transformation in double-notched TRIP and dual-phase steel samples

Consistent modeling of the coupling between crystallographic slip and martensitic phase transformation for mechanically induced loadings

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