Mechanical properties of twist grain boundaries in Cu

Miki Nomura, James Adams

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In a previous paper we studied the Young's and shear modulus of a high-angle twist grain boundary (Σ5) in Cu, using the EAM, and related it to the uniaxial strain derivatives of single crystals. In this paper, we discuss elastic properties of ten additional twist grain boundaries, from 8.8-43.6°. The monolayer Young's modulus at each boundary was calculated and found to be 20-50% higher than the bulk value for all eleven boundaries for both csl and type1 structures. The monolayer shear modulus at each boundary was calculated and found to be 93-98% lower than the bulk value for six grain boundaries with csl structure and found to decrease with increasing twist angle. The critical shear stress was also calculated for eleven boundaries with csl structure and found to roughly decrease with increasing twist angle.

Original languageEnglish (US)
Pages (from-to)137-146
Number of pages10
JournalInterface Science
Volume2
Issue number2
StatePublished - 1994
Externally publishedYes

Fingerprint

Grain boundaries
grain boundaries
Elastic moduli
mechanical properties
Mechanical properties
Monolayers
modulus of elasticity
shear
embedded atom method
axial strain
critical loading
shear stress
Shear stress
elastic properties
Single crystals
Derivatives
single crystals

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Mechanical properties of twist grain boundaries in Cu. / Nomura, Miki; Adams, James.

In: Interface Science, Vol. 2, No. 2, 1994, p. 137-146.

Research output: Contribution to journalArticle

Nomura, Miki ; Adams, James. / Mechanical properties of twist grain boundaries in Cu. In: Interface Science. 1994 ; Vol. 2, No. 2. pp. 137-146.
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