Please use this identifier to cite or link to this item:
https://scholarbank.nus.edu.sg/handle/10635/144389
Title: | SLIP, TWINS AND VOIDS: TRIAXIALITY EFFECTS IN MAGNESIUM | Authors: | BALAJI SELVARAJOU | Keywords: | Magnesium, Material anisotropy, Crystal plasticity, Triaxiality, Void growth, Damage | Issue Date: | 20-Jan-2017 | Citation: | BALAJI SELVARAJOU (2017-01-20). SLIP, TWINS AND VOIDS: TRIAXIALITY EFFECTS IN MAGNESIUM. ScholarBank@NUS Repository. | Abstract: | The complex deformation processes and high plastic anisotropy of magnesium (Mg) and its alloys are often referred to as the origins of poor ductility under general loading conditions. Understanding the anisotropy-stress state-microstructure interaction is imperative for strategies to enhance fracture resistance of Mg alloys. In this work, three-dimensional crystal plasticity based finite element calculations are used to assess plastic deformation and damage evolution under three-dimensional stress state. The first part of thesis discusses the independent effect of inherent plastic anisotropy, stress state and texture in determining the micromechanics of deformation. The second part focuses on the independent roles of crystal orientation and stress state on damage evolution by void growth in single crystal Mg. Micromechanical analysis of void growth process brings forth the interplay between stress state and deformation mechanisms in determining the void growth behavior. The results are key to developing improved homogenization-based ductile damage models. | URI: | http://scholarbank.nus.edu.sg/handle/10635/144389 |
Appears in Collections: | Ph.D Theses (Open) |
Show full item record
Files in This Item:
File | Description | Size | Format | Access Settings | Version | |
---|---|---|---|---|---|---|
Selvarajou_Balaji_PhDThesis.pdf | 30.21 MB | Adobe PDF | OPEN | None | View/Download |
Google ScholarTM
Check
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.