Accession Number:

ADA626999

Title:

Discrete Dislocation Dynamics Simulations of Twin Size-Effects in Magnesium

Descriptive Note:

Conference paper

Corporate Author:

JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING

Report Date:

2015-01-01

Pagination or Media Count:

7.0

Abstract:

A dislocation--1012 twin boundary TB interaction model was proposed and introduced into discrete dislocation dynamics simulations to study the mechanical behavior of micro-twinned Mg. Strong strain hardening was captured by current simulations, which is associated with the strong TBs barrier effect. In addition, twin size effects with small TB spacing leading to a strong yield stress, were observed to be orientation dependent. Basal slip orientation produces a strong size effect, while prismatic slip does a weak one.

Subject Categories:

  • Metallurgy and Metallography
  • Crystallography
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE