Experimental and numerical study of the mechanical behavior and kinetics of the martensitic transformation in 304L TRIP steel: applied to folding

Folding is a common industry practice. In this work we have studied the influence of some parameters such as (the radius of curvature of the matrix, the coefficient of friction between the punch and the specimen, the play between matrix and punch, the thickness of the specimen and the mesh of the specimen) on the deformations of the different zones of the specimen, by a numerical simulation of U-bending using the ABAQUS calculation code.The studied parameters will prove to be of relevant use for the design of the parts from the metal sheets, through the bending forming process. Numerical simulation is a good decision support tool for parts manufacturing companies.For the continuation of this work, a phenomenological model developed by IWAMOTO has been selected and modified to include the evolution of the microstructure (from austenite to martensite) after deformation.

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“…The (L) stands for low carbon steel. The chemical composition and designation of the steel is given in the following tables [4]:…”

Section: The Used Materialsmentioning

confidence: 99%

Numerical Study of the Bending of Steel Sheets Trip 304l

Boudedja

Hannaou

Abdesselam

et al. 2020

METAL 2020 Conference Proeedings

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“…The shear band is, of course, microscopic; however, the scale of the shear band structure can be much larger than the size of embryo existing in the inhomogeneous regions due to severe plastic deformation. In the past, several investigations of shear band formation in metals without phase transformation were undertaken [7,8], and various analyses on SIMT with the formation of microstructures were conducted [9][10][11]. However, in the martensitic transformation (MT) problems, the number of studies focused on SIMT in relation to the shear band formation is quite limited [12].…”

Section: Introductionmentioning

confidence: 99%

A Crystal Plasticity Simulation on Strain-Induced Martensitic Transformation in Crystalline TRIP Steel by Coupling with Cellular Automata

Trinh

Iwamoto

2021

Metals

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In transformation-induced plasticity (TRIP) steel, the strain-induced martensitic transformation (SIMT) has a close relationship with the shear band formation. At a small length scale such as that of a crystal, the explicit analysis of the shear band structure with the formed microstructure is quite important for an adequate understanding of the SIMT. Here, a study on the microstructures formed by SIMT, related to shear band formation in both single and polycrystal TRIP steels, is presented. The constitutive equation for single crystal TRIP steel considering the transformation strain on each variant system is derived based on a rate-dependent crystal plasticity theory. To express the martensitic transformation, the cellular automata approach, including a transformation criterion acting as a local rule, is introduced. Numerical simulation is conducted with patterning processes of the martensitic phase at an infinite medium under the plane strain tension. It is found that the similar distributions of the plastic strain and the martensitic phase are dependent on the initial crystal orientation and appear as the shear band structures. In addition, the sizes of embryo and cell strongly influence the shear band formation and the martensitic volume fraction of crystal TRIP steel.

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“…As a result, several models proposed by the authors Chaboche (1991, 1994), Ohno and Wang (1993, 1994), Jiang and Sehitoglu (1994, 1996), Delobelle et al (1995), McDowell (1995), Ohno and Abdel-Karim (2000). Kang et al (2002a, 2002b), Bari and Hassan (2002), Gao et al (2003), Kang et al (2004), Kang (2004), Taleb et al (2006), Taleb and Keller (2018), Sidhoum et al (2018), Wang and Beesea (2019) and Antunesa et al (2019) were developed to give a good estimate of the particular ratchet multiaxial.…”

Section: Introductionmentioning

confidence: 99%

The prediction of the cyclic mechanical behavior of stainless steel 304L at room temperature

Messai

Meziani

Fouathia

2021

WJE

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Purpose The purpose of this paper is to highlight the performance of the Chaboche model in relation to the database identification, tests with imposed deformations were conducted at room temperature on 304L stainless steel specimens. Design/methodology/approach The first two tests were performed in tension-compression between ±0.005 and ±0.01; in the third test, each cycle is composed of the combination of a compression tensile cycle between ±0.01 followed by a torsion cycle between ±0.01723 (non-proportional path), and the last, uniaxial ratcheting test with a mean stress between 250 MPa and −150 MPa. Several identifications of a Chaboche-type model were then performed by considering databases composed of one or more of the cited tests. On the basis of these identifications, the simulations of a large number of ratchet tests in particular were carried out. Findings The results present the effect of the optimized parameters on the prediction of the behavior of materials which is reported in the graphs, Optimizations 1 and 2 of first and second tests and Optimization 4 of the third test giving a good prediction of the increasing/decreasing pre-deformation amplitude. Originality/value The quality of the model's predictions strongly depends on the richness of the database used for the identification of the parameters.

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Experimental and numerical study of the mechanical behavior and kinetics of the martensitic transformation in 304L TRIP steel: applied to folding

Cited by 10 publications

References 27 publications

Numerical Study of the Bending of Steel Sheets Trip 304l

Numerical Study of the Bending of Steel Sheets Trip 304l

A Crystal Plasticity Simulation on Strain-Induced Martensitic Transformation in Crystalline TRIP Steel by Coupling with Cellular Automata

The prediction of the cyclic mechanical behavior of stainless steel 304L at room temperature

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