Embrittlement of nano-scale structures

J. S. Chen, A. Kadic-Galeb, M. Ferrari, T. M. Devine

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

A dealloyed surface layer formed on a Cu-30 Au alloy due to a corrosion process is capable of inducing intergranular cleavage of the normally ductile substrate during subsequent mechanical loading. The structure of the dealloyed layer consists of nanoscale pores that were formed by the selective removal of copper atoms during the anodic polarization. To contribute to the understanding of environmentally - induced embrittlement, we presently compute the stress state within the porous layer and in the bulk substrate due to the eigenstraining by the dealloying. The results of the calculations shows that a tensile stress state exists in the porous dealloyed layer while a compressive stress state is generated in the substrate. Implications on the "film-induced cleavage" model of stress corrosion cracking mechanism are discussed.

Original languageEnglish (US)
Pages (from-to)555-561
Number of pages7
JournalMechanics Research Communications
Volume19
Issue number6
DOIs
StatePublished - 1992

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Embrittlement of nano-scale structures'. Together they form a unique fingerprint.

Cite this