Laser beam welding in vacuum – A process variation in comparison with electron beam welding

2010 ◽  
Author(s):  
Uwe Reisgen ◽  
Simon Olschok ◽  
Stefan Longerich
Keyword(s):  
Electron Beam ◽  
Laser Beam ◽  
Electron Beam Welding ◽  
Process Variation ◽  
Laser Beam Welding

The Applications of SPF/DB Combined with Welding Technologies

2007 ◽  
Vol 551-552 ◽  
pp. 49-54 ◽  
Author(s):  
Zhi Qiang Li ◽  
X.H. Li
Keyword(s):  
Mechanical Properties ◽  
Electron Beam ◽  
Laser Beam ◽  
Diffusion Bonding ◽  
Electron Beam Welding ◽  
Aerospace Industry ◽  
Laser Beam Welding ◽  
Superplastic Forming ◽  
And Diffusion ◽  
Integrated Structures

Superplastic forming and diffusion bonding (SPF/DB) processes have been growing mature and titanium SPF/DB components have found wide application in aerospace industry. With the development of industrial SPF/DB technology, the size of SPF/DB components become bigger and bigger, and the shapes of components become more complex. However, the component sizes are limited by equipments, dies and the size of sheet. SPF/DB combined with welding technologies could be one of the possible solutions to form larger and more integrated structures due to many advantages compared with conventional process. This paper studied the combination processing of SPF and other welding methods besides diffusion bonding, such as electron beam welding and laser beam welding, and explained the experiments performed in different processes, including SPF after welding plate and welding plate after SPF. The results show that the material exhibits both reasonable formability and excellent mechanical properties. Application samples such as covers were manufactured by the combination processing. Furthermore, prospects of the combining technology were discussed at the end of paper.

A Study on Different Welding Processes of IN718 for Elevated Temperature Application

2015 ◽  
Vol 1125 ◽  
pp. 186-189
Author(s):  
Kyung Ju Min ◽  
Jong Hoon Yoon ◽  
Joon Tae Yoo ◽  
Ho Sung Lee
Keyword(s):  
Elevated Temperature ◽  
Laser Beam ◽  
Electron Beam Welding ◽  
Hot Isostatic Pressing ◽  
Laser Beam Welding ◽  
Superplastic Forming ◽  
Internal Cooling ◽  
Cooling Channels ◽  
Solid Solution Strengthening ◽  
Welding Processes

Alloy IN718 is a nickel based precipitation hardened material and it has the necessary strength over a range of temperatures which includes the operating range for many rocket propulsion systems and jet engines. This performance is accomplished by a combination of solid-solution strengthening, precipitation strengthening and grain-boundary strengthening. However, it is common for precipitation hardened nickel based superalloys to have a problem of post-weld cracking. In this study, several welding processes are investigated to obtain the optimum welding method of IN718 for elevated temperature forming. These include LBW(Laser Beam Welding), EBW(Electron Beam Welding), HIP(hot isostatic pressing), and solid state diffusion bonding. The result shows that the LBW specimen performs the highest formability at 980°C so that this process can be applied to superplastic forming of IN718 sheet. It is demonstrated that the elevated temperature superplastic forming of nozzle extension with internal cooling channels was possible with laser beam welded IN718 sheet.

A comparative study on laser beam and electron beam welding of 5A06 aluminum alloy

2019 ◽  
Vol 6 (5) ◽  
pp. 056563 ◽  
Author(s):  
Xiaohong Zhan ◽  
Haisong Yu ◽  
Xiaosong Feng ◽  
Pan Pan ◽  
Zemin Liu
Keyword(s):  
Aluminum Alloy ◽  
Electron Beam ◽  
Laser Beam ◽  
Comparative Study ◽  
Electron Beam Welding ◽  
5A06 Aluminum Alloy
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