Aerospace series. Welded and brazed assemblies for aerospace construction. Joints of metallic materials by electron beam welding

2015 ◽  
Keyword(s):  
Electron Beam ◽  
Electron Beam Welding ◽  
Metallic Materials ◽  
Construction Joints

Microstructure Evaluation of Heterogeneous Electron Beam Weld between Stabilised Austenitic and ODS Ferritic Steel

2017 ◽  
Vol 891 ◽  
pp. 185-189 ◽  
Author(s):  
Vít Jan ◽  
Jan Čupera ◽  
Pavel Sohaj ◽  
Petr Havlik
Keyword(s):  
Electron Beam ◽  
Electron Beam Welding ◽  
Analytical Electron Microscopy ◽  
Welding Parameters ◽  
Metallic Materials ◽  
Electron Beam Weld ◽  
Ods Steel ◽  
Microstructure Evaluation ◽  
Analytical Electron ◽  
Oxide Particles

The weldability of advanced heat resistant ODS metallic materials in combination with conventional materials is a prior requirement for their wider use in energy production. The microstructure of ODS steels is composed of alpha iron based matrix with dispersed oxide particles. Due to heating during conventional welding, the microstructure and properties of the resulting weld joints are affected and the joints often become the weakest point of the structure. The electron beam welding with its reduced heat affected zone size may be an answer in this. The presented article is focused on thorough metallographic evaluation of the structure of heterogeneous electron beam welds which combine stabilized austenitic stainless steel with the MA956 ferritic ODS steel. EB welded joints were evaluated by light and analytical electron microscopy including EDS and phase EBSD analyses in the as-welded state and after post-weld heat treatment. Mechanical properties of the weld were evaluated from the results of micro hardness profiles. Achieving an appropriate structure of such welds and correct welding parameters are crucial aspects for future successful application of similar joints in energy industry

GRADIENT BOOSTING METHOD APPLICATION TO SUPPORT PROCESS DECISIONS IN THE ELECTRON-BEAM WELDING PROCESS

2020 ◽  
Vol 21 (2) ◽  
pp. 206-214
Author(s):  
V. S. Tynchenko ◽  
◽  
I. A. Golovenok ◽  
V. E. Petrenko ◽  
A. V. Milov ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Welding ◽  
Welding Process ◽  
Gradient Boosting ◽  
Boosting Method
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