ENCYCLOPÉDIE DE LA RECHERCHE SUR L’ALUMINIUM AU QUÉBEC 2013 | Page 58

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NOUVEAUX PRODUITS ET MATÉRIAUX À BASE D'ALUMINIUM
NEW ALUMINIUM BASED PRODUCTS AND MATERIALS Al-Mg-Si AA6061 de
Développement de l’alliage
haut résistance à travers la deformation à froid et
RENFORCEMENT DE L’ALLIAGE Al-Mg-Si AA6061 PAR de vieillissement
le traitement
ÉCROUISSAGE À FROID ET VIEILLISSEMENT
Development of High Strength Al-Mg-Si AA6061
DEVELOPMENT OF HIGH STRENGTH Al-Mg-Si AA6061
Alloy Through Cold Working and Aging Treatment
ALLOY THROUGH COLD WORKING AND AGING TREATMENT
Auteur 1, Author2

Y.Département etP. Bocher
Zedan, Institution 1
1

Department of Mechanical Engineering, École de technologie supérieure (ÉTS), 1100
Notre-Dame 2 department Montréal, QC H3C 1K3, Canada.
Street West, and Institution 2.

An artificial aging treatment (T6) is universally accepted
procedure to strengthen 6000 series alloy. However, further
enhancement in their mechanical properties can be achieved by
refining the grain structure to ultrafine regime. The development
of ultrafine grained (UFG) Al alloys with grain sizes varying
between 0.1 µm and 1 µm is gaining importance in recent times
due to their superior mechanical properties as compared to the
conventional coarse–grained alloy.

Study effects of plastic deformation and
heat treatment on Mechanical properties

Micro hardness and
tensile properties

Study effects of pre-aging, single and double
aging, amount and multiple of reduction in area on
the mechanical characteristics.

Microstructure
Characterization
(EBSD)

Residual stress
determination

Wear resistance

Phase 1 : Single Cold Rolling( R = 50%) +
Single Aging

Phase 1I : Single Cold Rolling( R = 50%)
+ Double Aging

ND

Phase 1II : Pre Cold Working- Single Aging

RD
Phase V : Double Cold Working- Double
Aging

 Effect of Solution heat treatment Time

and Natural Aging on the hardness of
AA6061 Aluminum alloys

Rolling Mill

 Phase 1 : Single Cold Rolling( R = 50%)

+ Single Aging

Microhardness

 Phase 1I : Single Cold Rolling( R = 50%)

+ pre- Aging (double aging)

Fretting Test

 Comparsion of the Effects Natural Aging and PreAging on the Hardness of 6061 Aluminium Alloys
at Aging temperature 150
C

 24 Hours Naturally Aged
(Two Weeks Naturally Aged)

Yasser Zedan
Philippe Bocher
Département de
génie mécanique,
École de technologie
supérieure

 Two Weeks Naturally Aged

 Comparsion of the Effects Natural Aging and Pre-

Aging on the Hardness of 6061 Aluminium Alloys at
Aging temperature 125 C

RT+Aging
RT

 EBSD micrographs of original and cold-rolling 6061 Al

alloy at different strains (a) starting solution treated
material (ST) ;(b) True strain- e=0.4 ; (c) e= 0.8; (d) e= 1.2
; (e) e = 2.6; (f) e = 3.6 (ref)

 Hardness of 6061 Al Alloy as a function

of total amount of deformation during
cold rolling

The influence of plastic deformation on the mechanical and aging characteristics of Al-Mg-Si alloy (AA 6061 alloy) subjected to room temperature rolling was
investigated through hardness measurements. In the present study, pre-aging, single and double aging, amount and multiple of reduction in area and order of heat
treatment and cold working were utilized. The results indicate that applying single aging at 150 0C for 5 h in different thermal-mechanical treatments improves
mechanical properties. In addition, the pre-aging shows insignificant effect on the subsequent precipitation hardening of material.

Journée des étudiants – REGAL

Artificial aging treatment (T6) is a universally accepted procedure to strengthen
Un traitement de vieillissement artificiel (T6) est une procédure universellement
Palais des Cependant,
QC, Canada, alloys. However, further enhancement in their mechanical properties
reconnue afin de renforcer les alliages de la série 6000.congrès de Montréal,6000 series 22 octobre 2013
can be achieved by plastic deformation. The influence of plastic deformation on the
l'amélioration additionnelle de leurs propriétés mécaniques peut être réalisée
mechanical and aging characteristics of Al-Mg-Si alloy (AA 6061 alloy) subjected
par la déformation plastique. L'influence de la déformation plastique sur les
to room temperature rolling was investigated thro Y