Micromechanics model for nanovoid growth in nanocrystalline materials

Jian Qiu Zhou, Lu Wang, Zhi Xiong Ye

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

A theoretical model to describe the nanovoid growth by emission dislocation shear loop in nanocrystalline metal under equal biaxial remote stress was developed. The critical stress for emission of dislocation was derived by considering the effects of surface stress. Within our description, dislocations emitted from surface of nanovoid were piled up at grain boundaries and the stress field generated by arrested dislocations can prevent further dislocation emission. The effect of grain boundary of nanocrystalline materials on nanovoid growth was investigated, and the results showed that the smaller of the grain size, the harder for the nanovoid growth.

Original languageEnglish
Title of host publicationMechanical Automation and Materials Engineering
Pages754-759
Number of pages6
DOIs
StatePublished - 2013
Externally publishedYes
Event2nd International Conference on Mechanical Automation and Materials Engineering, ICMAME 2013 - Wuhan, China
Duration: 9 Aug 201311 Aug 2013

Publication series

NameApplied Mechanics and Materials
Volume364
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2nd International Conference on Mechanical Automation and Materials Engineering, ICMAME 2013
Country/TerritoryChina
CityWuhan
Period9/08/1311/08/13

Keywords

  • Dislocation
  • Grain boundaries
  • Nanocrystalline metal
  • Void growth

Fingerprint

Dive into the research topics of 'Micromechanics model for nanovoid growth in nanocrystalline materials'. Together they form a unique fingerprint.

Cite this