The clinching and spot welding of advanced high strengths dual-phase steel
Carregando...
Data
Data de publicação
2022
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
CONGRESSO BRASILEIRO DE ENGENHARIA E CIÊNCIA DOS MATERIAIS, 24.
Exportar
Resumo
In lightweight construction, the lowest use of raw materials is a reality. In the automotive sector,
the objective is the production of vehicle bodies following the concept of light construction and at
the same time suitably rigid and resistant to collisions. In addition, the assumptions of reducing
fuel consumption and the volume of vehicle emissions must be met. The materials for the
automotive sector, the use of advanced dual-phase steel of 1.3 GPa of mechanical strengths, whose
ferrite/martensite microstructure gives ultra-high tensile strength, can be spot welded by resistance
and/or joined by clinching. The application of this steel, up to 1.50 mm thick, proves to be
attractive to replace components obtained by hot stamping in the automotive sector, reducing the
cost of industrializing components such as side protection bars, floor reinforcements and other
relevant components in the system of vehicle collision management. The present work aimed to
correlate aspects of clinching and resistance spot welding joints, regarding tensile strength.
Changes in the clinching anchor region and in the heat-affected zone in the spot weld were
evaluated in microstructural and microhardness terms. The loads observed during the peeling tests
with clinching with complete neck rupture were higher than when the mechanical union
uncoupling took place. As for spot welding, despite the drop in microhardness in the heat-affected
zone and the shear in this region in the peeling test, the mechanical strength was still about twice
as high as in clinching. Even though, the results allow one to conclude that, under the experimental
conditions of the present work, clinching is feasible for ultra-high strength materials.
Como referenciar
BASTOS, V.M.; LIERMANN, C.; DALMAZO, R.; LARA, J.A.; JESUS, E.R.; MUCSI, C.S.; ROSSI, J.L. The clinching and spot welding of advanced high strengths dual-phase steel. In: CONGRESSO BRASILEIRO DE ENGENHARIA E CIÊNCIA DOS MATERIAIS, 24., 6-10 de novembro, 2022, Águas de Lindóia, SP. Resumo... Disponível em: http://repositorio.ipen.br/handle/123456789/33800. 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.