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Welding of Nickel Based Super Based Alloys by Gtaw Process

Author(s):

P.Archunan , Government College Of Engineering,Salem-11; M.Dinesh, Government College Of Engineering,Salem-11; R.Karthikeyan, Government College Of Engineering,Salem-11; S.Saroja, Government College Of Engineering,Salem-11

Keywords:

Nickel Based Super Alloys, GTAW, Process Parameters, Hot Cracking Susceptibility, Effect of Alloy Elements

Abstract

The study the weldability and the susceptibility of hot cracking in Nickel base super alloys by Gas Tungsten Arc welding process. The Super alloys are primarily used in gas turbines, coal conversion plants and chemical processing industries and for other specialized applications requiring heat and corrosion resistance. The γ' phase in the Nickel base super alloys is reasonable for the elevated temperature strength of the material and its incredible resistance to creep deformation and grain boundary dislocation. The effect of alloying elements on the Ni base super alloys were studied. The possible welding problems of Ni based super alloys were studied .The Nickel base super alloys are mostly prone to the strain age cracking .The presence of the carbides MC,M23C6,M6C,M7C3 and the laves phases are leads to hot cracking. To overcome those possible problems the welding parameters should be decided. The microstructure appears with γ’, carbides, laves phases.

Other Details

Paper ID: IJSRDV6I110139
Published in: Volume : 6, Issue : 11
Publication Date: 01/11/2019
Page(s): 471-473

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