...Farhang Farrokhi; Benny Endelt; Rasmus S. Andersen; Morten Kristiansen Grain refinement and the avoidance of columnar solidification is a great challenge in the deep penetration laser welds of thick-section steels. Further knowledge about the heat distribution and the temperature gradients in laser...

... as surface integrity. The development of models and simulation methods for grain refinement in machining process is of great importance. There are few models which are developed to predict the evolution of the grain refinement of HSM in mesoscale with sufficient accuracy. In this work, a cellular automata...

... hole of hardened carbon steels, which results from two mechanisms: thermally driven phase transformation and mechanical grain refinement due to severe plastic deformation. In this study, a multistep numerical analysis is conducted to investigate the potential mechanism of surface microstructure...

.... In this paper, a finite element based numerical framework embedded with a dislocation density-based material plasticity model was developed to simulate steady-state chip formation, grain refinement and microstructural evolution of the dislocation cell structure by orthogonal cutting. The validity...

...Qi Shen; YongBing Li; ZhongQin Lin; GuanLong Chen Electromagnetic stirring (EMS) has been demonstrated to have significant effect on molten metal in terms of crystal orientation, grain refinement and macro appearance of solidified structures by making use of Lorentz force. In the present study...