Effect of strain rate on flow stress and anisotropy of DP600, TRIP780, and AA5182-O sheet metal alloys

Rahmaan, Taamjeed; Bardelcik, Alexander; Imbert, J.; Butcher, Cliff; Worswick, Michael J.

doi:10.1016/j.ijimpeng.2015.09.006

Cited by 74 publications

(45 citation statements)

References 40 publications

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“…Specimens were tested along the sheet rolling direction. The reader is referred to Rahmaan et al [16] for the detailed mechanical properties and tensile behaviour for a wide range of strain rates.…”

Section: Methodsmentioning

confidence: 99%

“…A conversion of shear data to tensile data can be useful to obtain flow stress curves for larger strains as well as to True stress vs. effective plastic strain comparison for experimental data from tensile [16] and shear testing at the strain rate ranging from 0.01 to 600 s −1 .…”

Section: Tensile and Shear Stress Comparisonmentioning

confidence: 99%

“…The converted shear to tensile data is compared with the experimental data obtained from uniaxial tensile testing for the same sheet materials along diagonal (45 • to the rolling) direction [16] at comparable nominal strain rates (Figs. 12 and 13).…”

Section: Tensile and Shear Stress Comparisonmentioning

confidence: 99%

“…Due to the relatively isotropic behaviour of DP600 sheet, the converted tensile data form shear testing shows an excellent agreement with the uniaxial tensile test data for strain rates ranging from low to high 01033-p.5 EPJ Web of Conferences Figure 13. True stress vs. effective plastic strain comparison for experimental data from tensile [16] and shear testing at (a) quasistatic (b) 10 and (c) 100 s −1 strain rate.…”

Section: Tensile and Shear Stress Comparisonmentioning

confidence: 99%

“…The shear deformation behaviour and fracture characteristics of DP600 and AA5182-O sheet metal alloys have been investigated at quasi-static, 10, 100, and 600 s −1 strain rates. The dynamic shear tests served as a companion study to the recent high rate tensile characterization of these materials by the authors [16]. A method is proposed to determine the fracture strain based on hardening curve of the material.…”

Section: Introductionmentioning

confidence: 99%

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Effect of strain rate on shear properties and fracture characteristics of DP600 and AA5182-O sheet metal alloys

Rahmaan

Butcher

Abedini

et al. 2015

EPJ Web of Conferences

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Abstract. Shear tests were performed at strain rates ranging from quasi-static (.01 s −1 ) to 600 s −1 for DP600 steel and AA5182-O sheet metal alloys at room temperature. A miniature sized shear specimen was modified and validated in this work to perform high strain rate shear testing. Digital image correlation (DIC) techniques were employed to measure the strains in the experiments, and a criterion to detect the onset of fracture based on the hardening rate of the materials is proposed. At equivalent strains greater than 20%, the DP600 and AA5182 alloys demonstrated a reduced work hardening rate at elevated strain rates. At lower strains, the DP600 shows positive rate sensitivity while the AA5182 was not sensitive to strain rate. For both alloys, the equivalent fracture strain and elongation to failure decreased with strain rate. A conversion of the shear stress to an equivalent stress using the von Mises yield criterion provided excellent agreement with the results from tensile tests at elevated strain rates. Unlike the tensile test, the shear test is not limited by the onset of necking so the equivalent stress can be determined over a larger range of strain.

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Section: Methodsmentioning

confidence: 99%

Section: Tensile and Shear Stress Comparisonmentioning

confidence: 99%

Section: Tensile and Shear Stress Comparisonmentioning

confidence: 99%

Section: Tensile and Shear Stress Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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