Return to the institutional site
    • español
    • English
View Item 
  •   Séneca Home
  • TRABAJOS DE GRADO
  • Doctorado
  • View Item
    • español
    • English
  •   Séneca Home
  • TRABAJOS DE GRADO
  • Doctorado
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Browse

All of SénecaCommunities and CollectionsAuthorsTitlesSubjectsTypes of contentsAuthor profilesThis CollectionFaculties and ProgramsAuthorsTitlesSubjectsTypes of contents

My Account

LoginRegister

Statistics

View Usage Statistics

Information of interest

What is SénecaHow publishGuidelinesContact us

Engineering of surface microstructure transformations using high rate severe plastic deformation in machining

RISMendeley
URI: http://hdl.handle.net/1992/7840
Author: Abolghasem Ghazvini, SepidehUniandes authority
Director(s)/Advisor(s): Zarama Urdaneta, RobertoUniandes authority; Shankar, M. Ravi; Bidanda, Bopaya; Rajgopal, Jayant; Akhavan Tabatabaei, Raha
Publication date: 2015
Content type: doctoralThesis
Keywords:
Materiales a altas presiones
Microestructura
Deformaciones (Mecánica)
Materiales nanoestructurados
Abstract:
Engineering surface stuctures especially at the nanometer length-scales can enable fundamentally new multifunctional property combinations, including tunable physical, mechanical, electrochemical and biological responses. Emerging manufacturing paradigms involving Severe Plastic Deformation (SPD), for manipulating final microstructure of the surfaces are unfotunately limited by poorly elucidated process-structure-pelfonnance linkages, which are characterized by three central variables of plasticity: strain, strain-rate and temperature that detemine the resulting Ultra fine Grained (UFG) microstructure. The challenge of UFG surface engineering, design and manufacturing can be overcome if and only if the mappings between the central variables and the final microstructure are delineated. The objective of the proposed document is to first envision a phase-space, whose axes are parameterized in terms of the central variables of SPD. Then, each point can correspond to a unique microstructure, charactefized by its location on this map. If the parametrization and the population of the datasets are accurately defined, then the mapping is bijective where: i) realizing microstructure designs can be reduced to simply one of tuning process parameters falling within the map's desired subspaces. And, inversely, ii) microstructure prediction is directly possible by merely relating the measured/calculated thennomechanics at each point in the deformation zone to the conesponding spot on the maps
Show full item record

Files in this item

Thumbnail
Name:
u713593.pdf
Size:
43.22Mb
Format:
PDF

Statistics

View Usage Statistics
Donaciones

Los Andes

Donaciones


Icono Repositorio

Los Andes

Repositorio


Icono Egresados

Los Andes

Egresados


Icono Eventos

Los Andes

Eventos



Cra 1 Nº 18A - 12

Bogotá - Colombia

Postal code: 111711

+(571) 339 49 99

+(571) 339 49 49


Normatividad Institucional

  • Actos internos e incremento
  • Bienestar
  • Derechos pecunarios
  • Estatuto docente
  • Estatuto general
  • Ley de transparencia
  • Porcentaje de incremento
  • Reglamentos de estudiantes
  • Uso de datos personales

Enlaces Rápidos

  • ATC (Acceso Temporal al Campus)
  • Universidad de los Andes Caribe
  • Convivencia y transparencia
  • Educación Continuada
  • Emergencias: Extensión 0000
  • Nuestros profesores
  • Mapa del sitio
  • Multimedia
  • Noticias
  • Preguntas frecuentes

Redes sociales

  • Facebook
  • twitter
  • youtube
  • linkedin
  • instagram
  • snapchat
  • vimeo
  • google

Directorio de redes