Dear shotpeeners,
I have a question regarding the selection of peening media. I am currently working on optimizing the peening process for Q&T martensitic steel.
The tensile strength of the steel is 1050 MPa~33 HRC.
For this particular reason, we tried to use aluminum oxide grit, carbon steel shots (S110), stainless steel shots (CN30).
All of these peening media do not show a hardening of the surface layer. Besides different peening media, we also tried out different Almen intensities (4A1-17A1).
Often we faced surfaces with the presence of microcracks, which we want to avoid due to the application purpose of this steel.
Therefore, do you have maybe suggestions on which peening media could be used? Would using zirconia shots make sense in this case?
Thank you very much in advance!
Last edited by magdalena; 06/04/24 02:16 PM.
