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Accepted, "Processing and Properties of Structural Nanomaterials" symposium Materials Science & Technology 2003 conference, Chicago, IL
 

Summary: Accepted, "Processing and Properties of Structural Nanomaterials" symposium
Materials Science & Technology 2003 conference, Chicago, IL
(The Minerals, Metals, & Materials Society and The Iron & Steel Society)
Strength Design Maps for Nanolayered Composites
Adrienne V. Lamm and Peter M. Anderson
Department of Materials Science and Engineering
The Ohio State University
2041 College Road
Columbus, OH 43210-1179 USA
Abstract
Nanoscale multilayered materials exhibit extraordinary strength, due to the ability of
these systems to confine slip to individual layers. This paper adopts a premise suggested
by embedded atom simulations in copper-niobium multilayers that the tensile yield
strength is determined approximately by the critical applied stress to eliminate the
compressive bi-axial stress in alternating layers of the composite. Yield strength maps
are constructed for nanoscale multilayered composites consisting of alternating layer
phases in which the volume fraction of the phases, bi-layer thickness, and ratio of in-
plane stress-free lattice parameters of the two phases are regarded as variables. Also, the
degree of coherency of the interfaces and the internal bi-axial stress state in each layer
prior to loading are predicted as a function of these variables. The results suggest that

  

Source: Anderson, Peter M. - Department of Materials Science and Engineering, Ohio State University

 

Collections: Materials Science