Experimental Investigations on Pulsed Nd:YAG Laser Welding of C17300 Copper-Beryllium and 49Ni-Fe Soft Magnetic Alloys

2011 ◽  
Author(s):  
S. A. A. Akbari Mousavi ◽  
H. Ebrahimzadeh ◽  
Francisco Chinesta ◽  
Yvan Chastel ◽  
Mohamed El Mansori
Keyword(s):  
Laser Welding ◽  
Nd:Yag Laser ◽  
Experimental Investigations ◽  
Soft Magnetic ◽  
Magnetic Alloys ◽  
Pulsed Nd:Yag Laser ◽  
Soft Magnetic Alloys ◽  
Pulsed Nd:Yag Laser Welding ◽  
Copper Beryllium

Effects of Laser Beam Energy on the Pulsed Nd:YAG Laser Welding of Thin Sheet Corrosion Resistant Materials

2013 ◽  
Vol 773-774 ◽  
pp. 776-784
Author(s):  
Vicente Afonso Ventrella ◽  
Jose Roberto Berretta ◽  
Wagner de Rossi
Keyword(s):  
Laser Welding ◽  
Fusion Zone ◽  
Heat Affected Zone ◽  
Pulse Energy ◽  
Nd:Yag Laser ◽  
Thin Sheet ◽  
Lap Joints ◽  
Experimental Investigations ◽  
Pulsed Nd:Yag Laser ◽  
Pulsed Nd:Yag Laser Welding

The aim of this study was to value the possibility to join, for pulsed Nd:YAG laser welding, thin foils lap joints for sealing components in corrosive environment. Experimental investigations were carried out using a pulsed neodymium: yttrium aluminum garnet laser weld to examine the influence of the pulse energy in the characteristics of the weld fillet. The pulse energy was varied from 1.0 to 2.5 J at increments of 0.25 J with a 4 ms pulse duration. The base materials used for this study were AISI 316L stainless steel and Ni-based alloys foils with 100μm thickness. The welds were analyzed by electronic and optical microscopy, tensile shear tests and micro hardness. The results indicate that pulse energy control is of considerable importance to thin foil weld quality because it can generate good mechanical properties and reduce discontinuities in weld joints. The ultimate tensile strength of the welded joints increased at first and then decreased as the pulse energy increased. In all the specimens, fracture occurred in the top foil heat-affected zone next to the fusion line. The microhardness was almost uniform across the parent metal, HAZ and weld metal. A slight increase in the fusion zone and heat-affected zone compared to those measured in the base metal was observed. This is related to the microstructural refinement in the fusion zone, induced by rapid cooling of the laser welding. The process appeared to be very sensitive to the gap between couples.

Pulsed Nd:YAG laser welding of Cu54Ni6Zr22Ti18 bulk metallic glass

2007 ◽  
Vol 449-451 ◽  
pp. 872-875 ◽  
Author(s):  
Jong Hyun Kim ◽  
Changhee Lee ◽  
D.M. Lee ◽  
J.H. Sun ◽  
S.Y. Shin ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Laser Welding ◽  
Bulk Metallic Glass ◽  
Nd:Yag Laser ◽  
Pulsed Nd:Yag Laser ◽  
Pulsed Nd:Yag Laser Welding

scholarly journals Interfacial Characteristics of Dissimilar Ti6Al4V/AA6060 Lap Joint by Pulsed Nd:YAG Laser Welding

Metals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 71 ◽  
Author(s):  
Xin Xue ◽  
António Pereira ◽  
Gabriela Vincze ◽  
Xinyong Wu ◽  
Juan Liao
Keyword(s):  
Laser Welding ◽  
Nd:Yag Laser ◽  
Laser Beam Welding ◽  
Welding Process ◽  
Mechanical Resistance ◽  
Lap Joint ◽  
Important Indicator ◽  
Pulsed Nd:Yag Laser ◽  
Pulsed Nd:Yag Laser Welding ◽  
Interfacial Characteristics

This paper focuses on the interfacial characteristics of dissimilar Ti6Al4V/AA6060 lap joint produced by pulsed Nd:YAG laser beam welding. The process-sensitivity analysis of welding-induced interface joining quality was performed by using the orthogonal design method. Microstructural tests such as scanning electron microscopy and energy dispersive X-ray spectroscopy were used to observe the interfacial characteristics. The mechanism of interfacial crack initiation, which is an important indicator of joint property and performance, was assessed and analyzed. The preferred propagation paths of welding cracks along the interfaces of different intermetallic layers with high dislocation density were analyzed and discussed in-depth. The results indicate that discontinuous potential phases in the micro-crack tip would mitigate the mechanical resistance or performance of the welded joint, while the continuous intermetallic layer can lead to a sound jointing performance under pulsed Nd:YAG laser welding process.

In-process monitoring of weld qualities using multi photo-sensor system in pulsed Nd:YAG laser welding

1999 ◽  
Author(s):  
Takuo Ikeda ◽  
Tsuneaki Kojima ◽  
J. F. Tu ◽  
Etsuji Ohmura ◽  
Isamu Miyamoto ◽  
...  
Keyword(s):  
Laser Welding ◽  
Process Monitoring ◽  
Nd:Yag Laser ◽  
Sensor System ◽  
Pulsed Nd:Yag Laser ◽  
Photo Sensor ◽  
Pulsed Nd:Yag Laser Welding
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