2014 A simulation of a cold technology ( 950 °C) has been analysed by X-ray topography at different stages of its elaboration. It is shown first that an elastic deformation occurs straight below the edges of the film pattern. Then, point defects are generated at the polysilicon-silicon interface upon oxidation. Finally the crystalline quality is perturbed in the whole bulk wafer upon further ch...

In this work, the effect of cold deformation prior to annealing treatment on microstructure and magnetic hysteresis energy losses in a low carbon grain non-oriented semi-processed electrical steel with 0.60 mm thickness was investigated. The samples were subjected different percentages deformation, range 5–20% reduction annealed at temperatures between 650 950 °C for 60 min, these characterized...

In the present work two different cold working and annealing schemes were utilized, asymmetric superelastic response of thermomechanically processed materials then assessed through cyclic tensile compressive modes deformation. The values transformation stress, strain, pseudoelastic strain measured for each treated solutionized specimens was compared. solution annealed state, difference these pa...

The ferrite fraction and phase distribution of duplex steels depend strongly on the temperature evolution during hot deformation are correlated to different mechanical behaviors as well cold deformation. Therefore, control microstructure forming is relevant for target-oriented material design. In flow stress modelling forming, influence beyond often neglected. present work, a new method demonst...

In this review, a number of recent developments of laser forming are presented based on the work in Manufacturing Research Laboratory (MRL) of Columbia University. In order to advance laser forming to realistic forming application, it is necessary to consider non-straightening and larger scale 3D laser forming, so that anisotropy and size effect need to be investigated in detail. In this paper,...