This article is cited in 6 papers

Mechanical properties, strength physics and plasticity

Interaction of dislocations with nanoprecipitates of the metastable phase and dispersion strengthening of the Fe–Cu alloy

Yu. N. Gornostyrev^ab, I. N. Kar'kin^ab, L. E. Kar'kina<sup>a

a</sup> Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg
^b Institute of Quantum Materials Science, Ekaterinburg

Abstract: The interaction of dislocations with copper-enriched precipitates in the matrix of body-centered cubic iron has been investigated by the molecular dynamics method. It has been shown that dislocations stimulate the development of a phase instability of body-centered cubic copper precipitates in a specific range of their sizes. This process is accompanied by the pinning of dislocations by precipitates and makes a significant contribution to strengthening. The results obtained provide an adequate explanation for the observed dependence of the strengthening in the Fe–Cu system on the precipitate size.

Received: 29.11.2010

 English version: Physics of the Solid State, 2011, 53:7, 1388–1396

Bibliographic databases:

•