Heat Treatment VS Shot Peen

Posted by: achmadarifudinh

Heat Treatment VS Shot Peen - 08/12/19 08:54 PM

Hi all

Im Achmad Arifudin H, from indonesia, im new member in here, I am relatively new to shot peening, and have some questions regarding some parts I am currently may need shot peening.

for your information, i wanna shot peening industrial gas turbine in root of blade and the material blade is udimet 520, but i have suggestions from other company that "if you do heat treatment (solution and aging for nickel based superalloy), you didnt need to shot peened the part, because the residual stress from operational has been relief when heat treatment".

but he didnt have reference, just his opinion.

do you have any information that heat treatment same treatment like shot peening in nickel based superalloy ??

Regards

Achmad Arifudin H
Posted by: Dave Barkley

Re: Heat Treatment VS Shot Peen - 08/12/19 10:53 PM

They are not completely wrong. Heating a part relieves/neutralizes the stress, however Peening goes beyond that and congresses the surface layer. A compressed surface allows cyclic loading thus improving fatigue life.
Posted by: achmadarifudinh

Re: Heat Treatment VS Shot Peen - 08/13/19 08:33 PM

Hello dave

Thanks a lot for your information. I will perform this shot peen for my part.

Regards
Achmad Arifudin H