scholarly journals Laser Beam Welding of Austenitic Stainless Steels – Similar Butt and Dissimilar Lap Joints

10.5772/48756 ◽  
2012 ◽  
Author(s):  
Abdel-Monem El-Batahgy
Keyword(s):  
Laser Beam ◽  
Stainless Steels ◽  
Laser Beam Welding ◽  
Austenitic Stainless Steels ◽  
Lap Joints

Hot Cracking Susceptibility in Duplex Stainless Steel Welds

2018 ◽  
Vol 941 ◽  
pp. 679-685
Author(s):  
Kazuyoshi Saida ◽  
Tomo Ogura
Keyword(s):  
Stainless Steels ◽  
Laser Beam Welding ◽  
Austenitic Stainless Steels ◽  
Hot Cracking ◽  
Duplex Stainless Steels ◽  
Solidification Cracking ◽  
Solidification Mode ◽  
Gas Tungsten Arc ◽  
Varestraint Test ◽  
Super Duplex Stainless Steels

The hot cracking (solidification cracking) susceptibility in the weld metals of duplex stainless steels were quantitatively evaluated by Transverse-Varestraint test with gas tungsten arc welding (GTAW) and laser beam welding (LBW). Three kinds of duplex stainless steels (lean, standard and super duplex stainless steels) were used for evaluation. The solidification brittle temperature ranges (BTR) of duplex stainless steels were 58K, 60K and 76K for standard, lean and super duplex stainless steels, respectively, and were comparable to those of austenitic stainless steels with FA solidification mode. The BTRs in LBW were 10-15K lower than those in GTAW for any steels. In order to clarify the governing factors of solidification cracking in duplex stainless steels, the solidification segregation behaviours of alloying and impurity elements were numerically analysed during GTAW and LBW. Although the harmful elements to solidification cracking such as P, S and C were segregated in the residual liquid phase in any joints, the solidification segregation of P, S and C in LBW was inhibited compared with GTAW due to the rapid cooling rate in LBW. It followed that the decreased solidification cracking susceptibility of duplex stainless steels in LBW would be mainly attributed to the suppression of solidification segregation of P, S and C.

Laser beam welding of dissimilar stainless steels in a fillet joint configuration

2012 ◽  
Vol 212 (4) ◽  
pp. 856-867 ◽  
Author(s):  
M.M.A. Khan ◽  
L. Romoli ◽  
M. Fiaschi ◽  
G. Dini ◽  
F. Sarri
Keyword(s):  
Laser Beam ◽  
Stainless Steels ◽  
Laser Beam Welding ◽  
Joint Configuration ◽  
Fillet Joint

Characterization of lap joints laser beam welding of thin AA 2024 sheets with Yb:YAG disk-laser

2012 ◽  
Author(s):  
Fabrizia Caiazzo ◽  
Vittorio Alfieri ◽  
Francesco Cardaropoli ◽  
Vincenzo Sergi
Keyword(s):  
Laser Beam ◽  
Laser Beam Welding ◽  
Lap Joints ◽  
Disk Laser ◽  
Aa 2024
Sign in / Sign up

Export Citation Format

Share Document