Multiscale modeling of irradiation induced hardening in iron alloys

Ioannis N. Mastorakos, Hussein M. Zbib, Dongsheng Li, Mohamed A. Khaleel, Xin Sun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Structural materials in the new Generation IV reactors will operate in harsh radiation conditions coupled with high levels of hydrogen and helium production and will experience severe degradation of mechanical properties. Therefore, understanding of the physical mechanisms responsible for the microstructural evolution and corresponding mechanical property changes is critical. As the involved phenomena are very complex and span in several length scales, a multiscale approach is necessary in order to fully understand the degradation of materials in irradiated environments. In previous work, we used molecular dynamics simulations to develop critical rules for the mobility of dislocations in various iron alloys and their interaction with several types of defects that include, among others, helium bubbles and grain boundaries. In this work, Dislocation Dynamics simulations of iron alloys are used to study the mechanical behavior and the degradation under irradiation of large systems with high dislocation and defect densities.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings
Pages43-48
Number of pages6
Volume1444
DOIs
Publication statusPublished - 1 Dec 2012
Externally publishedYes
Event2012 MRS Spring Meeting - San Francisco, CA, United States
Duration: 9 Apr 201213 Apr 2012

Other

Other2012 MRS Spring Meeting
CountryUnited States
CitySan Francisco, CA
Period9/4/1213/4/12

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Mastorakos, I. N., Zbib, H. M., Li, D., Khaleel, M. A., & Sun, X. (2012). Multiscale modeling of irradiation induced hardening in iron alloys. In Materials Research Society Symposium Proceedings (Vol. 1444, pp. 43-48) https://doi.org/10.1557/opl.2012.1424