The corrosion resistance between AA2050-T84 and AA7050-T7451 welded by friction stir weld
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2019
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BRAZIL MRS MEETING, 18th
Resumo
Aluminum alloys of the 2XXX and 7XXX series are among the most used materials
in the aerospace industry. These alloys have good mechanical, specific strength
and corrosion resistance, and for the 2XXX series, further reduction in density
can be achieved by lithium addition. So, in this case, it can reduce the weight of
the aeroplane and fuel usage leading to the minimization of CO 2 emissions and
cost savings. Aluminum alloys have poor weldability, and
to use these alloys for aeroplane structures, joining is unavoidable. To make this,
the industry uses rivets to join these alloys. But rivets increase the mass of
aeroplanes, and to minimise this, a non-fusion (unconventional) welding technique
capable of welding aluminium alloys easily was developed. This new technique is
friction stir welding, which exposes the aluminum alloys to thermomechanical
effects, changing the microstructure of the alloys, and resulting in different
regions with different metallurgical and mechanical properties. An example of the
regions is the thermomechanically affected region which experiences both plastic
deformation and high temperature but without recrystallization. There is also the
stir zone which is the region of recrystallized grains, the heat affected zone and
the base metal (that is not affected by the welding process). The goals of this
work are to analyze the corrosion resistance of the friction stir weldment of
dissimilar AA2050-T84 and AA7050-T7451 alloys using electrochemical tests,
characterizing the different regions of the weldment, and establishing the most
susceptible region to corrosion using a sodium chloride solution.
Como referenciar
VIVEIROS, BARBARA V.G. de; BERBEL, LARISSA O.; BUGARIN, ALINE F.S.; DONATUS, UYIME; COSTA, ISOLDA. The corrosion resistance between AA2050-T84 and AA7050-T7451 welded by friction stir weld. In: BRAZIL MRS MEETING, 18th, September 22-26, 2019, Balneário Camburiú, SC. Abstract... São Carlos, SP: Aptor Software, 2019. p. 2089-2089. Disponível em: http://repositorio.ipen.br/handle/123456789/31051. Acesso em: 29 Mar 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.