Constitutive Modeling of Asymmetric Hardening Behavior of Transformation-Induced Plasticity Steels

Jung, Jaebong; Hur, Yong Chan; Jun, Sungwook; Lee, Hyunseok; Kim, Byung-Min; Kim, Ji Hoon

doi:10.1007/s12239-019-0124-6

Cited by 13 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Low-carbon steel was chosen because it does not have the strength differential effect and will be used for the validation of the test and correction method. 3G AHSS exhibited transformation-induced plasticity (TRIP) and showed the tensioncompression strength differential effect because of the martensitic transformation of the austenite phase [10,16,[31][32][33]. The thickness of each of the two steel sheets was 1.4 mm.…”

Section: Methodsmentioning

confidence: 99%

“…For tensile and compressive tests using the developed test setup, dog bone-type customised specimens with a 70 mm long straight region were used, as shown in Figure 2b. Similar specimens have previously been used for measuring tension-compression behaviour [10,16,34].…”

Section: Tensile and Compressive Tests Under Side Forcementioning

confidence: 99%

“…The residual stress caused by the forming process affects the shape of the formed products due to springback. For accurate analysis of springback in sheet metal forming, it is important to measure the tensile and compressive behaviour precisely and use appropriate models to describe the behaviour [1][2][3][4][5][6][7][8][9][10]. The characterisation of compressive behaviour is even more important in the sheet-bulk metal forming processes where three-dimensional material flow is involved [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…Out-of-plane compressive behaviour can be measured using the stack compression test [13,14]. In-plane sheet compression tests have been used to measure material behaviour under tensile and compressive loading [5,7,9,10,[15][16][17]. The major issue with the in-plane sheet compression test is the avoidance of buckling during compression.…”

Section: Introductionmentioning

confidence: 99%

“…For steels with an austenitic phase, the strength-differential effect in the tensile and compressive modes has been attributed to the martensitic phase transformation from the austenitic phase, or the transformation-induced plasticity (TRIP) effect [10,16,[31][32][33]. The TRIP effect depends on the stress state and causes an asymmetry in the tensile and compressive strengths, where the compressive strength is usually larger than the tensile strength.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Characterisation of Compressive Behaviour of Low-Carbon and Third Generation Advanced High Strength Steel Sheets with Freely Movable Anti-buckling Bars

Kim¹,

Jung²,

Park³

et al. 2022

Metals

Self Cite

View full text Add to dashboard Cite

Measuring the compressive behaviour of sheet materials is an important process for understanding the material behaviour and numerical simulation of metal forming. The application of side force on both surfaces of a specimen in the thickness direction is an effective way to prevent buckling when conducting compressive tests. However, the side effects of side forces (such as the biaxial stress state and non-uniform deformation) make it difficult to interpret the measured data and derive the intrinsic compressive behaviour. It is even more difficult for materials with tension–compression asymmetry such as steels that undergo transformation-induced plasticity. In this study, a novel design for a sheet compression tester was developed with freely movable anti-buckling bars on both sides of the specimen to prevent buckling during in-plane compressive loading. Tensile and compressive tests under side force were conducted for low-carbon steel using the digital image correlation method. The raw tensile and compressive stress–strain data of the low-carbon steel showed apparent flow stress asymmetry of tension and compression, originating from the biaxial and thickness effects. A finite element method-based data correction procedure was suggested and validated for the low-carbon steel. The third generation advanced high strength steels showed intrinsic tension–compression asymmetry at room temperature whereas the asymmetry was significantly reduced at 175 °C.

show abstract