Atomistic modeling of nanosized Cr precipitate contribution to hardening in an Fe–Cr alloy

Shim, Jae-Hyeok; Kim, Dong Ik; Jung, Woo-Sang; Cho, Young Whan; Wirth, Brian D.

doi:10.1016/j.jnucmat.2008.12.058

Cited by 6 publications

(1 citation statement)

References 10 publications

(12 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is shown that Cr-rich precipitate formed as a result of α − α ′ phase decomposition harden material because they impede the movement of dislocation [11]. Shim et al studied the interaction between edge dislocations and nanoscale Cr precipitation in high Cr ferrite/martensitic steels through MD [12]. The simulation result shows that Cr precipitation lead to the strengthening of high Cr ferrite/martensitic steels, and there is attractive interaction between the edge dislocation and nanoscale Cr precipitation.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the friction behavior of medium entropy alloy via controllable coherent nanoprecipitation

Kong,

Fang,

2023

Modelling Simul. Mater. Sci. Eng.

View full text Add to dashboard Cite

In recent years, FeCrNi medium entropy alloy, a new material with high hardness, high strength, good ductility and wear resistance, has been widely studied. In this work, the effect of precipitation volume fraction on the friction behavior of FeCrNi is studied by molecular dynamics simulation. With the increase of precipitation volume fraction, the average friction coefficient shows an upward trend. When the volume fraction of precipitation is between 2.33% and 3.10%, the wear resistance of FeCrNi would be enhanced after the nanoscratching. When the volume fraction of precipitation is between 2.33% and 3.10%, the normal force is larger, which means that a certain precipitation volume fraction will strengthen FeCrNi. Low precipitation volume fraction can effectively reduce the wear volume and wear rate during scratching, thus effectively reducing frictional force and friction coefficient. The interaction between dislocation and precipitation is an important factor that hinders dislocation propagation, leading to sample strengthening and the increase of wear volume, which is manifested as the increase of normal force and frictional force. The results guide the study of the effect of multiple precipitation on frictional properties and precipitation-dislocation interaction in FeCrNi.

show abstract

Section: Introductionmentioning

confidence: 99%