Abstract Grain refinement by severe plastic deformation (SPD) techniques, as a mechanism to control microstructure (recrystallization, grain size changes,…) and mechanical properties (yield strength, ultimate tensile strain, hardness variation…) of pure aluminium conductor wires, is topic great interest for both academic industrial research activities. This paper presents an innovative finite e...

Welding is an essential fabrication step during the construction of pipelines using high-strength low-alloy steels. The base metal experiences a rapid thermal excursion in heat-affected zone, resulting modification microstructure and mechanical properties. In particular, coarse-grain zone closest to weld pool significance for integrity pipelines. present work, hardness were quantified from labo...

The evolution of strain hardening behavior the Fe50(CoCrMnNi)50 medium-entropy alloy as a function fraction recrystallized microstructure and grain size was studied using Hollomon Ludwigson equations. specimens under study were partially recrystallized, fully with ultrafine-grained microstructure, coarse grains. yield strength decreases steadily increases due to recovery process Hall–Petch effe...

In this article, we report on the application of our spherical nanoindentation data analysis protocols to study the mechanical response of grain boundary regions in as-cast and 30% deformed polycrystalline Fe–3%Si steel. In particular, we demonstrate that it is possible to investigate the role of grain boundaries in the mechanical deformation of polycrystalline samples by systematically studyin...

Yale Kamisar has explained how events that occurred about fifty years ago led to the creation of a stand-alone criminal procedure course and, a few years later, led to the division of that stand-alone course into two courses. The second of those courses came to be called, almost from the outset, the “Jail-to-Bail” course. My focus today is on why that course was created and how it was shaped. M...

Grain growth and hardness variation occurring in high-temperature heat affected zone (HAZ) during the welding processes are two thermal dependant aspects of great interest for both academic industrial research activities. This paper presents an innovative finite element (FE) model capable to describe grain decrease that occur gas metal arc (GMAW) commercial AISI 441 steel. The FE software SFTC ...

[1] To understand the role of the Hall effect during fast magnetic reconnection, hybrid simulations with and without the Hall term in the generalized Ohm’s Law are compared, as done originally by Karimabadi et al. (2004). It is found that reconnection with the Hall term is fast, but reconnection in the so-called Hall-less hybrid simulations is Sweet-Parker like (slow) when the resistivity is co...