Effect analysis of heat treatments on electroplasticity of AA6082
Visualitza/Obre
Report (6,314Mb) (Accés restringit)
Sol·licita una còpia a l'autor
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Appendix 1/3 (2,631Mb) (Accés restringit)
Sol·licita una còpia a l'autor
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Appendix 2/3 (1,428Mb) (Accés restringit)
Sol·licita una còpia a l'autor
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Appendix 3/3 (1,018Mb) (Accés restringit)
Sol·licita una còpia a l'autor
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Estadístiques de LA Referencia / Recolecta
Inclou dades d'ús des de 2022
Cita com:
hdl:2099.1/24651
Tipus de documentProjecte/Treball Final de Carrera
Data2014-06
Condicions d'accésAccés restringit per decisió de l'autor
Tots els drets reservats. Aquesta obra està protegida pels drets de propietat intel·lectual i
industrial corresponents. Sense perjudici de les exempcions legals existents, queda prohibida la seva
reproducció, distribució, comunicació pública o transformació sense l'autorització del titular dels drets
Abstract
Manufacturing in automotive and aircraft industries are focused in improvement and cost reductions of forming processes such as stamping, drawing, and machining. Electrically assisted forming is a technique whereby metal is deformed while simultaneously electric current flow is induced. This recently developed process is presented as an alternative to traditional hot stamping manufacturing processes where larger ductility and reduction of maximum strength reduce the possibility of tearing or cracking during stamping by means of heat treatment.
The effect of electroplastic employing electropulses on the mechanical properties of EN-AW 6082 aluminum alloy was studied. Various heat treatments were analyzed in order to examine comparatively different behaviors throughout the tensile test while electro-pulsing was induced.
The structure of the study herein presents two main parts. The first part is the study of aging treatments of the AA6082 taking in interest the well-known industrial conditions which are the natural aging condition (T4), the artificial aging condition (T6) as well as others of non-industrial interest such as the overaging condition, as well as the condition of the alloy directly quenched from the solution heat treating (SHT). The results presented in this investigation showed a well-known differentiated behavior during tensile testing of solution heat treated, natural aging (T4), artificially peak-aged (T6) and overaged samples. It is important to mention as well that starting material is a sheet of thickness 1 mm from manufactured in a rolling process, by this fact the rolling direction has been also part of the investigation specifying the 0º, 45º and 90º respectively to the rolling direction in order to characterize anisotropy. The second part of this study has been focused entirely in the electroplastic effect utilizing electro-pulsing during tensile testing of AA6082 for each heat treatment above mentioned. The performance of electro-pulsing has been varying frequency and pulse-length in consequence the constant energy has been also varied due that both parameters are related to the last mentioned and so a broad range of considerations has been well-thought-out.
The goals of this project are to measure as accurately as possible the variations caused by the electroplastic effect and those variations had been limited mainly to those two factors above mentioned: ductility and maximum strength. Mechanical behavior appears to be greatly modified in presence of an electric current and taking into consideration the known different structures of SHT, natural, artificial and overaged the analysis of interaction of electric-current and nano and/or microstructures/dislocations are still not well understood currently.
MatèriesAluminum alloys -- Heat treatment, Deformacions (Mecànica), Plasticity, Electrometallurgy, Alumini -- Aliatges -- Tractament tèrmic, Deformacions (Mecànica), Plasticitat, Electrometal•lúrgia
TitulacióENGINYERIA DE MATERIALS (TITULACIÓ CONJUNTA AMB LA UB) (Pla 2003)
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
Report.pdf | Report | 6,314Mb | Accés restringit | |
Annex A.pdf | Appendix 1/3 | 2,631Mb | Accés restringit | |
Annex B.pdf | Appendix 2/3 | 1,428Mb | Accés restringit | |
Annex C.pdf | Appendix 3/3 | 1,018Mb | Accés restringit |