Influence of Mechanical Arc Oscillation on the Microstructural and Mechanical Properties of Inconel 718 Welds

Gas tungsten arc welding of Inconel 718 has been carried out with mechanical arc oscillation at frequencies of 0, 5 and 50 Hz. A significant grain refinement was evident at 50 Hz due to higher cooling rate, and this resulted in low niobium segregation in the interdendritic region of the weld. The me...

Full description

Saved in:
Bibliographic Details
Published in:Transactions of the Indian Institute of Metals 2019-06, Vol.72 (6), p.1541-1544
Main Authors: Anbarasan, N., Narein, N., Jerome, S.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Cooling rate
Corrosion and Coatings
Gas tungsten arc welding
Grain refinement
Heat treating
Materials Science
Mechanical properties
Metallic Materials
Nickel base alloys
Niobium
Superalloys
Technical Paper
Tribology
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:Gas tungsten arc welding of Inconel 718 has been carried out with mechanical arc oscillation at frequencies of 0, 5 and 50 Hz. A significant grain refinement was evident at 50 Hz due to higher cooling rate, and this resulted in low niobium segregation in the interdendritic region of the weld. The mechanical properties of weld obtained at higher frequency were superior to other welds.
ISSN:0972-2815
0975-1645
DOI:10.1007/s12666-019-01710-3