PORTO @ Archivio Istituzionale della Ricerca

This study investigates the resistance spot welding between a quenching and partitioning (Q&P) steel and a transformation-induced plasticity (TRIP) steel. The effects of welding current, electrode force, and welding time on microstructure and mechanical properties have been assessed by shear tension and hardness tests. Welding electrical parameters have been monitored to detect metal expulsion. An adequate shear strength of lap-joint Q&P/TRIP spots is observed, with the best mechanical strength (14 kN) being obtained with a 7.5 kA current. Metal expulsion is detected for the highest current (9 kA), which limits the shear strength and nugget size of spot welds. The lap-joint samples mainly break by partial thickness with button pull; interfacial fractures only occur in the samples with the smallest nuggets. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Effects of Process Parameters on Spot Welding of TRIP and Quenching and Partitioning Steels / RUSSO SPENA, Pasquale; Cortese, Luca; DE MADDIS, Manuela; Lombardi, Franco. - In: STEEL RESEARCH INTERNATIONAL. - ISSN 1611-3683. - 87:12(2016), pp. 1592-1600. [10.1002/srin.201600007]

Effects of Process Parameters on Spot Welding of TRIP and Quenching and Partitioning Steels

RUSSO SPENA, PASQUALE;DE MADDIS, MANUELA;LOMBARDI, FRANCO
2016

Abstract

This study investigates the resistance spot welding between a quenching and partitioning (Q&P) steel and a transformation-induced plasticity (TRIP) steel. The effects of welding current, electrode force, and welding time on microstructure and mechanical properties have been assessed by shear tension and hardness tests. Welding electrical parameters have been monitored to detect metal expulsion. An adequate shear strength of lap-joint Q&P/TRIP spots is observed, with the best mechanical strength (14 kN) being obtained with a 7.5 kA current. Metal expulsion is detected for the highest current (9 kA), which limits the shear strength and nugget size of spot welds. The lap-joint samples mainly break by partial thickness with button pull; interfacial fractures only occur in the samples with the smallest nuggets. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
2016
STEEL RESEARCH INTERNATIONAL
1.1 Articolo in rivista
File in questo prodotto:
File Dimensione Formato  
srin.201600007.pdf

accesso riservato

Tipologia: 2a Post-print versione editoriale / Version of Record
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 2.25 MB
Formato Adobe PDF
  Visualizza/Apri   Richiedi una copia
2.25 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2676036
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo