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Caizhi Zhou, Seminar, March 27, 2017

Published: March 25, 2017

Multiscale modeling of advanced nanostructured metallic materials


TIME: March 27, 2017

PRESENTER: Caizhi Zhou, Missouri University of Science and Technology

LOCATION: 4F, Building 2

TYPE: Seminar


Abstract:

Advanced metallic nanostructured materials, such as metallic nanolayered composites, nanotwinned metals and gradient nano-grained materials, have drawn increased attention from the materials science community because of their potential for ultrahigh strength, increased ductility and elevated fracture toughness. Fundamental barriers must be resolved to manufacture such advanced nanostructured materials in bulk form and at reduced cost. Significant research has been conducted in recent years to understand the underlying mechanisms that control the mechanical behavior of these advanced nanostructured materials. Both experiments and modeling have revealed that as microstructure length-scales are reduced from micrometer- to nanometer levels, interfaces, such as grain boundaries and phase boundaries, become crucial in determining the mechanical behavior of nanostructured materials. Through the development of computer resources and novel experimental methods, macroscopic and phenomenological descriptions of mechanical behaviors are being substituted by multiscale approaches rooted in deeper understanding of microstructure- and defect-level processes during the deformation in crystalline materials. Challenges remain in developing models with truly predictive capability in applications to nano-scale structures. This talk will review various modeling tools at different length scales and present a new hierarchical multiscale modeling framework to study mechanical behavior of nanostructured materials.


Biography:

Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA

email: zhouc@mst.edu

more info: faculty page on MST


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