Analysis of Resistance Spot Welding (RSW) on 22MnB5 material after hot stamping for automotive applications (B-pillar)
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2021
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SIMPÓSIO INTERNACIONAL DE ENGENHARIA AUTOMOTIVA, 28th
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Resumo
One of the major concerns that arose in recent years
within the automotive industry has been making cars
sustainable, safe and economic. One of the ways to solve
this equation is to use lighter materials that reduce the
weight of vehicles and increase the energy absorption
mainly on the B-pillar. This paper aims to study the RSW
cycle of the welding parameter known as P1. The parameter
were defined to reach the maximum load during the tensile
test according to the norm AWS D8.9. The test samples
were assembled with a GAP to reproduce real vehicle
welding conditions, and the parameter P1 weld 22MnB5
steel samples with heat treatment, known as Press
Hardening Steel (PHS). The influence of these parameters
on the PHS mechanical properties was evaluated with
Vickers hardness test (HV), metallographic technique,
conducting ultrasonic and tensile test. The results
confirmed the difference at the Heat affected zone (HAZ)
mechanical strength over fusion zone. It was possible to
visualize a softening region in the HAZ and increasing to
the weld point, which is demonstrated in the microstructural
analysis and thus justifies the detachment of the weld
button of the base material in tensile test. Keywords: PHS,
HAZ, RSW.
Como referenciar
MARCELO, LARISSA A.; ROSSI, JESUALDO L.; LARA, JOSE A.C.; MUCSI, CRISTIANO S. Analysis of Resistance Spot Welding (RSW) on 22MnB5 material after hot stamping for automotive applications (B-pillar). In: SIMPÓSIO INTERNACIONAL DE ENGENHARIA AUTOMOTIVA, 28th, March 17-18, 2021, Online. Proceedings... São Paulo, SP: Blucher, 2021. p. 157-161. DOI: 10.5151/simea2021-PAP37. Disponível em: http://repositorio.ipen.br/handle/123456789/33550. Acesso em: 20 Mar 2026.
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