Microstructure evolution in a 6082 aluminium alloy during thermomechanical treatment

Cecilia Poletti, Romain Bureau, Peter Loidolt, Peter Simon, Stefan Mitsche, Mirjam Spuller

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Thermomechanical treatments of age-hardenable wrought aluminium alloys provoke microstructural changes that involve the movement, arrangement, and annihilation of dislocations, the movement of boundaries, and the formation or dissolution of phases. Cold and hot compression tests are carried out using a Gleeble® 3800 machine to produce flow data as well as deformed samples for metallography. Electron backscattered diffraction and light optical microscopy were used to characterise the microstructure after plastic deformation and heat treatments. Models based on dislocation densities are developed to describe strain hardening, dynamic recovery, and static recrystallisation. The models can describe both the flow and the microstructure evolutions at deformations from room temperatures to 450 °C. The static recrystallisation and static recovery phenomena are modelled as a continuation of the deformation model. The recrystallisation model accounts also for the effect of the intermetallic particles in the movements of boundaries.

LanguageEnglish
Article number1319
JournalMaterials
Volume11
Issue number8
DOIs
StatusPublished - 30 Jul 2018

Fingerprint

Thermomechanical treatment
Aluminum alloys
Microstructure
Optical microscopy
Recovery
Metallography
Hot pressing
Strain hardening
Electron diffraction
Intermetallics
Plastic deformation
Dissolution
Heat treatment
Temperature

Keywords

  • Aluminium alloy
  • Dislocations
  • Materials modelling
  • Recovery
  • Recrystallisation
  • Thermomechanical treatment

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Microstructure evolution in a 6082 aluminium alloy during thermomechanical treatment. / Poletti, Cecilia; Bureau, Romain; Loidolt, Peter; Simon, Peter; Mitsche, Stefan; Spuller, Mirjam.

In: Materials, Vol. 11, No. 8, 1319, 30.07.2018.

Research output: Contribution to journalArticleResearchpeer-review

Poletti, Cecilia ; Bureau, Romain ; Loidolt, Peter ; Simon, Peter ; Mitsche, Stefan ; Spuller, Mirjam. / Microstructure evolution in a 6082 aluminium alloy during thermomechanical treatment. In: Materials. 2018 ; Vol. 11, No. 8.
@article{c70e4b90d27b4cd9ba7b1db96cf1754a,
title = "Microstructure evolution in a 6082 aluminium alloy during thermomechanical treatment",
abstract = "Thermomechanical treatments of age-hardenable wrought aluminium alloys provoke microstructural changes that involve the movement, arrangement, and annihilation of dislocations, the movement of boundaries, and the formation or dissolution of phases. Cold and hot compression tests are carried out using a Gleeble{\circledR} 3800 machine to produce flow data as well as deformed samples for metallography. Electron backscattered diffraction and light optical microscopy were used to characterise the microstructure after plastic deformation and heat treatments. Models based on dislocation densities are developed to describe strain hardening, dynamic recovery, and static recrystallisation. The models can describe both the flow and the microstructure evolutions at deformations from room temperatures to 450 °C. The static recrystallisation and static recovery phenomena are modelled as a continuation of the deformation model. The recrystallisation model accounts also for the effect of the intermetallic particles in the movements of boundaries.",
keywords = "Aluminium alloy, Dislocations, Materials modelling, Recovery, Recrystallisation, Thermomechanical treatment",
author = "Cecilia Poletti and Romain Bureau and Peter Loidolt and Peter Simon and Stefan Mitsche and Mirjam Spuller",
year = "2018",
month = "7",
day = "30",
doi = "10.3390/ma11081319",
language = "English",
volume = "11",
journal = "Materials",
issn = "1996-1944",
publisher = "MDPI AG",
number = "8",

}

TY - JOUR

T1 - Microstructure evolution in a 6082 aluminium alloy during thermomechanical treatment

AU - Poletti, Cecilia

AU - Bureau, Romain

AU - Loidolt, Peter

AU - Simon, Peter

AU - Mitsche, Stefan

AU - Spuller, Mirjam

PY - 2018/7/30

Y1 - 2018/7/30

N2 - Thermomechanical treatments of age-hardenable wrought aluminium alloys provoke microstructural changes that involve the movement, arrangement, and annihilation of dislocations, the movement of boundaries, and the formation or dissolution of phases. Cold and hot compression tests are carried out using a Gleeble® 3800 machine to produce flow data as well as deformed samples for metallography. Electron backscattered diffraction and light optical microscopy were used to characterise the microstructure after plastic deformation and heat treatments. Models based on dislocation densities are developed to describe strain hardening, dynamic recovery, and static recrystallisation. The models can describe both the flow and the microstructure evolutions at deformations from room temperatures to 450 °C. The static recrystallisation and static recovery phenomena are modelled as a continuation of the deformation model. The recrystallisation model accounts also for the effect of the intermetallic particles in the movements of boundaries.

AB - Thermomechanical treatments of age-hardenable wrought aluminium alloys provoke microstructural changes that involve the movement, arrangement, and annihilation of dislocations, the movement of boundaries, and the formation or dissolution of phases. Cold and hot compression tests are carried out using a Gleeble® 3800 machine to produce flow data as well as deformed samples for metallography. Electron backscattered diffraction and light optical microscopy were used to characterise the microstructure after plastic deformation and heat treatments. Models based on dislocation densities are developed to describe strain hardening, dynamic recovery, and static recrystallisation. The models can describe both the flow and the microstructure evolutions at deformations from room temperatures to 450 °C. The static recrystallisation and static recovery phenomena are modelled as a continuation of the deformation model. The recrystallisation model accounts also for the effect of the intermetallic particles in the movements of boundaries.

KW - Aluminium alloy

KW - Dislocations

KW - Materials modelling

KW - Recovery

KW - Recrystallisation

KW - Thermomechanical treatment

UR - http://www.scopus.com/inward/record.url?scp=85051129692&partnerID=8YFLogxK

U2 - 10.3390/ma11081319

DO - 10.3390/ma11081319

M3 - Article

VL - 11

JO - Materials

T2 - Materials

JF - Materials

SN - 1996-1944

IS - 8

M1 - 1319

ER -