On the Cu precipitation behavior in thermo-mechanically embrittlement processed low copper reactor pressure vessel model steel

Revisiting Temporal Evolution of Cu-Rich Precipitates in Fe–Cu Alloy: Correlative Small Angle Neutron Scattering and Atom-Probe Tomography Studies

“…As a result, Cu precipitation using thermal aging of Fe–Cu model alloys has been investigated extensively, both experimentally (Goodman et al, 1973 b ; He et al, 2010) and theoretically (Le Bouar, 2001; Shim et al, 2007). Different aspects of this precipitation process have been examined by researchers using various experimental techniques such as field ion microscopy (Goodman et al, 1973 a ; Miller et al, 1998), atom probe tomography (APT) (Pareige et al, 1993; Auger et al, 1995; Shu et al, 2018 a ; Styman et al, 2018), high-resolution transmission electron microscopy (Othen et al, 1991; Deschamps et al, 2001), magnetization measurements (Vandenbossche et al, 2007; Hauser et al, 2008; Park et al, 2010), Vicker's hardness (He et al, 2010; Cao et al, 2013), and small-angle neutron scattering (SANS) (Deschamps et al, 2001; He et al, 2010). Results from these different experimental techniques are largely in agreement with the CRP characteristics such as dimensions and number density.…”

Influence of thermo-mechanical embrittlement processing on microstructure and mechanical behavior of a pressure vessel steel

“…To be specific, the temper-embrittlement process could be combined with cold strain, which is called the TMEP procedure. The heat treatment can produce a larger concentration of vacancies and vacancy clusters that are supposed to accelerate the formation of CRPs based on a solute-vacancy exchange diffusion mechanism [10]. After that, the cold strain may cause the interaction of dislocations and precipitates, and then the steel could be embrittled by the large numbers of dislocation loops forming behind them.…”

Obtaining wear-resistant and score-resistant coatings with iron-based powder laser cladding with copper oxide nano-powder adding

“…The decrease in the friction coefficient depend on the concentration of coppercontaining particles ranging in size from several nanometers to tens of micrometers. Such particles can be formed, both during prolonged isothermal annealing of hardened steel [6][7][8][9] and during crystallization of cast iron-carbon alloys [1][2][3][4].…”

“…На снижение коэффициента трения оказывает влияние концентрация медьсодержащих частиц размером от нескольких нанометров до десятков микрометров. Такие частицы могут быть сформированы как при длительных изотермических отжигах закаленной стали [6][7][8][9], так и в процессе кристаллизации литых железоуглеродистых сплавов [1][2][3][4].…”