Microstructure and Strength of Ultrasonic Plus Resistance Spot Welded Aluminum Alloy to Coated Press Hardened Boron Steel

Press-hardened boron steels with ultrahigh strength (above 1500 MPa) are widely used in crash-sensitive safety components in automobiles. Joining such steels to aluminum alloys is challenging due to various factors including the steel’s tenacious Al-Si coating. A novel application of ultrasonic plus...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2020, Vol.51 (1), p.93-98
Hauptverfasser:	Lu, Ying, Walker, Luke, Kimchi, Menachem, Zhang, Wei
Format:	Artikel
Sprache:	eng
Schlagworte:	Alloy steels Aluminum Aluminum base alloys Automotive parts Boron steels Characterization and Evaluation of Materials Chemistry and Materials Science Communication Dissimilar material joining Dissimilar metals Intermetallic compounds Materials Science Metallic Materials Microstructure Nanotechnology Resistance spot welding Silicon steels Structural Materials Structural steels Surfaces and Interfaces Thin Films Weight reduction
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Press-hardened boron steels with ultrahigh strength (above 1500 MPa) are widely used in crash-sensitive safety components in automobiles. Joining such steels to aluminum alloys is challenging due to various factors including the steel’s tenacious Al-Si coating. A novel application of ultrasonic plus resistance spot welding was developed for such dissimilar metal joining. The nugget formation and the interface microstructure especially intermetallics formed were correlated to the joint strength, ductility and failure behavior.
ISSN:	1073-5623 1543-1940
DOI:	10.1007/s11661-019-05524-2