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Lasers in Manufacturing and Materials Processing
Erschienen in: Lasers in Manufacturing and Materials Processing 1/2019

12.11.2018

Application of the Pulsed Nd: YAG Laser Welding to Investigate the Effect of Laser Beam Position on Weld Characteristics of AISI 420 Stainless Steel to Kovar Alloy

verfasst von: S. H. Baghjari, M. Gholambargani, S. A. A. Akbari Mousavi

Erschienen in: Lasers in Manufacturing and Materials Processing | Ausgabe 1/2019

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Abstract

In the present study, dissimilar joining of AISI 420 Stainless Steel (SS 420) to Kovar alloy using a pulsed Nd:YAG laser welding was carried out. The effect of laser beam position with respect to the joint on the microstructure of dissimilar weldmetal was investigated through taking advantage of optical and scanning electron microscopy. Moreover, hardness measurement and fractography were performed to investigate the mechanical properties of weldmetal. A detailed effect of laser beam position on crack susceptibility of fusion zone is elaborated in this research work. The results showed promotion of susceptibility of fusion zone to cracking with offsetting laser beam position to SS 420 base metal. Also martensitic structure was formed in the weldmetal when off-set laser beam shifted 0.2 mm toward the SS 420 base metal. The microhardness test revealed that moving laser beam position toward SS 420 resulted in increasing weld hardness.
Vorheriger Artikel Influence of the Real Geometry of the Laser Cut Front on the Absorbed Intensity and the Gas Flow
Nächster Artikel Laser Alloying of Surface of Ti-5.5Al-2Zr-1Mo-1 V Titanium near-α-Alloy Prepared Via Melted by Pulsed Laser Radiation TiC Particles

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Metadaten
Titel
Application of the Pulsed Nd: YAG Laser Welding to Investigate the Effect of Laser Beam Position on Weld Characteristics of AISI 420 Stainless Steel to Kovar Alloy
verfasst von
S. H. Baghjari
M. Gholambargani
S. A. A. Akbari Mousavi
Publikationsdatum
12.11.2018
Verlag
Springer US
Erschienen in
Lasers in Manufacturing and Materials Processing / Ausgabe 1/2019
Print ISSN: 2196-7229
Elektronische ISSN: 2196-7237
DOI
https://doi.org/10.1007/s40516-018-0078-y

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