Simulation of Fracture of Nanocrystalline Metals

Fan Yang; Wei Yang

doi:10.4028/www.scientific.net/AMR.33-37.981

Paper Titles

Atomistic Simulation of the Energy Barrier for Dislocation Movement in Si
p.957

Study of Nanocutting Using Atomic Model
p.963

Measurement of Young's Modulus and Poisson's Ratio of Thin Film by Combination of Bulge Test and Nano-Indentation
p.969

Effect of Box Microspring Size on Spring Constant
p.975

Simulation of Fracture of Nanocrystalline Metals
p.981

On the Mechanical Properties of Transversely Isotropic Material Using the Nanoindentation
p.987

Effects of Surface and In-Layer van der Waals Interaction on Mechanical Properties for Carbon Nanotubes
p.993

Contact and Friction at Nanoscale
p.999

Stress Field Near a Nanosized Spheroidal Cavity under Bi-Axial Tension Perpendicular to the Revolution Axis
p.1005

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 33-37Simulation of Fracture of Nanocrystalline Metals

Simulation of Fracture of Nanocrystalline Metals

Abstract:

A computation sample of nanocrystallion metal with a crack is proposed in this work. The structural evolution scheme is employed to model the mass flow, the grain boundary cavitation, and the crack growth of the specimen under remote loading. The scheme leads to a system of ordinary differential equations that can be solved by Euler integration. The simulation validates the proposal that the ductile versus brittle transition of nano-grained metals is dictated by the competition of creep deformation promoted by grain-boundary kinetics, and the decohesion of grain boundaries.