Tarasankar Debroy

TL;DR: In this article, the authors assess the state of the art in the field of friction stir welding of steels, focusing on the knowledge base in the open literature, and present a survey of the state-of-the-art.

TL;DR: In this article, the influence of welding parameters on stray grain formation in laser and electron beam welds on single-crystal alloy CMSX-4 was investigated through heat transfer and fluid flow simulations.

TL;DR: In this article, a validated heat transfer and fluid flow laser welding model is used to examine how changes in processing parameters similar to those used in direct energy deposition processes affect the relationships between top surface and subsurface temperatures and solidification parameters in Ti-6Al-4V.

TL;DR: In this paper, the evolution of grain structure and topology in three dimensions in both the FZ and the HAZ considering the motion of the liquid pool was investigated. And the results showed that the grain size distributions and topological class distributions were largely unaffected by the temporal and spatial variations of the temperature created by different welding parameters.

TL;DR: In this paper, an experimental and modelling results demonstrate that the fusion zone size in Ti-6Al-4V alloy was larger than that of the 21Cr-6Ni-9Mn stainless steel during both the electron beam and laser welding.