DP600 dual phase steel thermo-elasto-plastic constitutive model considering strain rate and temperature influence on FEM residual stress analysis of laser welding

Calibration of a modified Johnson-Cook model using the Virtual Fields Method and a heterogeneous thermo-mechanical tensile test

“…The identification of the elastic parameters is not part of this work, thus based on the literature the value of 0.3 is assumed for the Poisson's ratio [41]. Concerning Young's modulus, a dependence on the temperature is observed, which is according to the data reported in the literature for dual-phase steels [52,53]. For the DP980 used in this study, average Young's modulus values of 185 GPa and 106 GPa are determined from stress-strain curves at room temperature and 500 • C, respectively.…”

Strain incompatibility as a source of residual stress in welding and additive manufacturing

“…5. Trends of the elastic moduli with temperature for two materials: IN718 (used in AM) data from [30] and DP600 (used in welding) data from [51,52] .…”

Structures and Mechanical Properties of Some Dual-Phase Steels with Low Manganese Content

“…These steels' structure is formed by a soft and ductile ferrite matrix in which martensite (10 to 35%) and a small amount of residual austenite (1 to 2%) are homogeneously dispersed. They have, in general, a percentage of carbon less than 0.12%, a content of manganese between 1.0% and 3.5%, and elements such as V, Cr, Mo, Si, Nb, Ti are to be found in chemical composition in proportions situated below 1%; in the recent years, to reduce cars costs, research has been conducted on dual-phase steels in which the manganese content was less than 1% (0.5 to 1% Mn) [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”