Franco Bonollo

TL;DR: In this article, a study of three different welded joints produced by electron beam welding dissimilar materials was presented, which showed complex heterogeneous fusion zone microstructures characterized both by rapid cooling and poor mixing of materials which contain main elements which are mutually insoluble.

TL;DR: Open circuit potential, potentiodynamic and weight loss measurements in a phosphate buffer solution electrolyte revealed an improved corrosion resistance of UFG alloy compared to the extruded one, stemming from a shift of corrosion regime from localized pitting in the as-received sample to a more uniform corrosion mode with reduced localized attack in ECAP processed alloy.

TL;DR: In this article, the influence of phase transformation on the residual stress induced by the welding process, by comparing the results obtained with the described differences in the analyses, was examined, and it was found that both volume changes due to phase transformations and transformation plasticity have a great influence on the in-plane stresses induced by welding process.

TL;DR: In this article, a finite element model of the process has been set up using an uncoupled thermal-mechanical analysis, and the predicted residual stresses were then compared with X-ray diffraction measurements.

TL;DR: The current work individuate the most relevant challenges for HPDC industry: “zero-defect” production, real-time process control, understanding the role of the process variables, process optimization, introduction of research and development activities, and disseminating the knowledge about H PDC technology.