Influence of beam oscillation in electron beam welding of Ti-6AL-4V

Effect of beam oscillation on the evolution of microstructure and its correlation to mechanical properties for butt-welded Ti-6Al-4V plates has been studied using electron beam welding. Joints made with oscillating beam demonstrated higher ductility (by 10 to 15%) and notch toughness (by 20 to 30%)...

Full description

Saved in:
Bibliographic Details
Published in:International journal of advanced manufacturing technology 2018-02, Vol.94 (9-12), p.4531-4541
Main Authors: Kar, Jyotirmaya, Roy, Sanat Kumar, Roy, Gour Gopal
Format: Article
Language:English
Subjects:
Arc welding
Butt joints
Butt welding
CAE) and Design
Computer-Aided Engineering (CAD
Electron beam welding
Electron oscillations
Engineering
Evolution
Heat affected zone
Industrial and Production Engineering
Mechanical Engineering
Mechanical properties
Media Management
Microstructure
Notch toughness
Original Article
Residual stress
Temperature gradients
Titanium base alloys
Welded joints
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Effect of beam oscillation on the evolution of microstructure and its correlation to mechanical properties for butt-welded Ti-6Al-4V plates has been studied using electron beam welding. Joints made with oscillating beam demonstrated higher ductility (by 10 to 15%) and notch toughness (by 20 to 30%) compared to those produced by non-oscillating beam. Evolution of such improved mechanical properties with beam oscillation has been corroborated with more uniform and fine microstructure, which has been attributed to the intense heat mixing, reduced temperature gradient, and more uniform cooling in the weld track. Narrow heat-affected zone and fusion zone with considerably reduced undercut depth were also obtained for oscillating beam joints. Interestingly, residual stress was found to be more in welds prepared with beam oscillation than its non-oscillating counterparts, although the magnitude of such stress irrespective of the welding condition was found to be much lower than those reported for arc welding.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-017-1169-1