Theorical and experimental determination of the forming limit diagram for the AISI 304 stainless steel

Campos, Haroldo Béria; Butuc, Marilena C.; Grácio, J.; Rocha, João; Duarte, José Manuel Ferreira

doi:10.1016/j.jmatprotec.2006.03.065

Cited by 52 publications

(19 citation statements)

References 16 publications

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“…More advanced FE simulations are currently available by incorporating different yield criteria and also by crystal plasticity models. The basis for such simulations includes defining the yield function of the material associated with the subsequent flow rules and then incorporating the Marciniak defect to initiate the localized necking for the instability analysis [13][14][15][16][17]. Onset of the localized necking for uniaxial and biaxial side of the FLDs was predicted by [18].…”

Section: Introductionmentioning

confidence: 99%

Forming limit curves in low-carbon steels: improved prediction by incorporating microstructural evolution

Vadavadagi

Shekhawat

Samajdar

et al. 2015

Int J Adv Manuf Technol

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Experimental forming limit curves (FLCs) were determined for two different grades of low-carbon steel: interstitial free (IF) and drawing quality (DQ). The grades had different interstitial content, clear differences in microstructural evolution, and differences in experimental FLCs. Microstructural evolution was generalized in terms of developments in crystallographic texture and in-grain misorientations. These were extrapolated further into dynamic values of normal anisotropy (r ) and strain hardening exponent (n), respectively. FLCs were simulated by finite element (FE) analysis. Simulations were conducted using constant (or initial) and dynamic material properties (namely, r and n). Simulations using the dynamic variation in the material properties showed better comparison to the experimental FLCs.

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Section: Introductionmentioning

confidence: 99%

Forming limit curves in low-carbon steels: improved prediction by incorporating microstructural evolution

Vadavadagi

Shekhawat

Samajdar

et al. 2015

Int J Adv Manuf Technol

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“…For example, Campos et al (2006) used the Marciniak-Kuczynski (M-K) method with the Hill'48 yield criterion for theoretical prediction of the forming limit curve (FLC) for the AISI 304 stainless steel. They conducted tensile tests on the non-grooved specimens simulating a uniaxial tension strain path and the grooved specimens simulating a strain path between uniaxial tension and plane strain and conducted bulge tests on the circular specimens simulating biaxial tension * Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

The coupling influence of size effects and strain rates on the formability of austenitic stainless steel 304 foil

Gau

Chen

et al. 2013

Journal of Materials Processing Technology

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“…These simulations are based on describing a material's yield function and subsequent flow surfaces and then incorporating an instability analysis -for example a Marciniak defect -to initiate localized plastic flow. The investigations by Knockaert et al (2002), Kuroda and Kuwabara (2002), Barlat et al (2003), Wu et al (2003), McGinty and McDowell (2004), Abedrabbo et al (2006), Campos et al (2006), Aretz (2007), Ganjiani and Assempour (2007), Yoshida et al (2007) and Signorelli et al (2009) among others, are some of the most notable recent examples of this type of theoretical simulation of metal formability.…”

Section: Introductionmentioning

confidence: 99%

Study of a drawing-quality sheet steel. II: Forming-limit curves by experiments and micromechanical simulations

Ramos

Stout

Bolmaro

et al. 2010

International Journal of Solids and Structures

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a b s t r a c tIn Part I of the current paper, we showed the results of uniaxial-tension tests, through-thickness and plane-strain compression experiments, quantitative texture -orientation distribution function -evaluations and Lankford coefficient measurements. These data were used for calibration and verification of a visco-plastic self-consistent (VPSC) polycrystal-plasticity simulation code for predicting a steel sheet's ability to be stretched and deep drawn. Lankford coefficients are one, although incomplete, measure of a steel's drawing quality. In order to obtain a deeper insight and better verification of the simulation code, we measured the forming-limit curve, FLC, for the same steel sheet. To make these measurements we stretched circle-gridded sheets of material with a punch and die. Samples had both a flat-sided and hourglass geometry and ranged from 20 to 80 mm in width. The 80 mm wide sample completely filled the die. With this range of sample sizes, we spanned all of the stress states applicable to a FLC, from uniaxial to biaxial tension. Our FLC curve had the classic ''V" shape typical of drawing-quality steel, with a minimum safe forming strain of about 0.35 in plane-strain deformation and a safe forming strain of nearly 0.45 in balanced biaxial stretching. To model the FLC behavior, we used the same VPSC model and calibration employed in Part I. In order to obtain a necking instability in the calculation, a Marciniak defect was implemented into the VPSC model. The severity of the defect was adjusted to match the measured instability strain, 0.35, in plane-strain deformation. Both hardening laws fit in Part I were used to calculate the FLC. In the positive biaxial quadrant of the FLC, the limit strains predicted by the power law closely follow the measured uniform deformations, while the saturation law appears to over predict the limit strains. In uniaxial-tension, it was the opposite. The power-law hardening predictions seemed excessive. However, if we consider the FLC curve to be a band of finite width, both hardening laws and the VPSC formulation capture the essence of the FLC data.

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Theorical and experimental determination of the forming limit diagram for the AISI 304 stainless steel

Cited by 52 publications

References 16 publications

Forming limit curves in low-carbon steels: improved prediction by incorporating microstructural evolution

Forming limit curves in low-carbon steels: improved prediction by incorporating microstructural evolution

The coupling influence of size effects and strain rates on the formability of austenitic stainless steel 304 foil

Study of a drawing-quality sheet steel. II: Forming-limit curves by experiments and micromechanical simulations

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