msepostdoc-list Seminar Reminder for Vignesh Vivekanandan's Preliminary Exam. Monday Nov. 26, at 10:30 a.m., in ARMS 1109

[Son, Rosemary E]

Please consider attending the following:

MATERIALS ENGINEERING
SEMINAR



"Review of Junctions in FCC Metals"

By
Vignesh Vivekanandan
Purdue MSE Ph.D. Preliminary Exam

Advisor: Professor Anter El-Azab

ABSTRACT



Plastic deformation of metals occurs by dislocation motion. The density of dislocations increase during plastic deformation giving rise to hardening. This process is controlled by dislocation-dislocation interaction, especially the so-called forest cutting and junction formation. In this review, the different types of junctions and their contribution to hardening in FCC metals are discussed. First, the junction formation process is explained based on linear elastic models of dislocations. Then the shortcomings of such models are discussed and the need for dislocation dynamics simulations is emphasized. Following that, different algorithms used to model and characterize junctions in dislocation dynamics are summarized. Based on this characterization, a methodology to incorporate the information in continuum models is explored.











Date: Monday, November 26, 2018

Time: 10:30 A.M.
Place: ARMS 1109

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