Evaluation of the residual stress and microstructure of extruded and shot peened aluminum alloy 6082
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Materials Science Forum
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Aluminum-magnesium-silicon alloys have been widely used as extruded products due to
its mechanical strength and high ductility. The effects induced by shot peening has been extensively
used in materials that have potential for structural applications. In this context, the purpose of this
study was to evaluate the residual stress induced by shot peening of extruded aluminum alloy 6082.
Initially, the effect of heat treatments such as solution treatment and ageing of this alloy was
studied. The residual stress measurements were carried out using x-ray diffraction. The
microstructure of the alloy was studied by optical microscopy. The crystallographic texture was
determined using x-ray diffraction and back-scattered electron diffraction. The heat treatment
sequence that resulted in the highest hardness of Al alloy 6082 was solution treatment at 560ºC for
30 min, followed by ageing at 185ºC for 5 h. The residual stress in compression of the extruded
alloy’s surface increased by 87.38%, from -66.6 to -124.8 MPa, caused by shot peening. The
residual stress profile indicated an increase in its value up to a depth of 86 μm, beyond which the
values obtained were unreliable. The extruded section revealed accentuated crystallographic texture
in the (111) plane parallel to the cross-section and in the (200) and (220) planes oriented
preferentially in the longitudinal direction to extrusion and perpendicular to the (111) plane.
Como referenciar
BORGES, ARNALDO A.C.; ARAUJO, MAYARA C. de; COUTO, ANTONIO A.; LIMA, NELSON B. de; CONTATORI, CHESTER. Evaluation of the residual stress and microstructure of extruded and shot peened aluminum alloy 6082. Materials Science Forum, v. 930, p. 507-512, 2018. DOI: 10.4028/www.scientific.net/MSF.930.507. Disponível em: http://repositorio.ipen.br/handle/123456789/29277. Acesso em: 30 Dec 2025.
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.