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Nickel Base Alloys and Associated Problems on Welding


R. Karthikeyan , Government college of Engineering ,Salem ; Pro. P. Sundharaj, Government college of Engineering ,Salem


Nickel Based Super Alloys, SAC- Strain-Age cracking, Process Parameters, Hot Cracking Susceptibility, Effect of Alloy Elements


To study the various types of nickel based alloys and effect of alloying element on properties of alloy, welding problems present in nickel based alloys. 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 alloys are mostly prone to the strain age cracking, Solidification cracking, HAZ liquification cracking, Fusion Zone Solidification Cracking. The presence of the carbides MC, M23C6, M6C, M7C3 and the laves phases are leads to hot cracking.

Other Details

Paper ID: IJSRDV7I10585
Published in: Volume : 7, Issue : 1
Publication Date: 01/04/2019
Page(s): 762-767

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