Hi my dear
If anybody knows about effect of double precipitation hardening on the above material to reach my requirements, please send his /her the comments.
I think with my received results , it seems which I have to do double PH but I don't have any experience for that. For example doing...
Hi
I have received the mechanical properties of the samples with new PH temperature (605C / 5hr).
As you can see not only we didn't receive to our impact requirements , but also we missed our R0.2% too.
Please send your comments if any.
Best regards
Matin
Thanks
Yes you are OK about 24 hrs under zero but I think it doesn't produce any damage for the parts.
- About aging at higher temp , I have done in 605C/5hrs and I am waiting for the results.
I will inform you but I am afraid of decreasing R0.2% under my requirements (min 900MPa).
- About...
Thanks for your prompt reply.
I want to add my history for 3 diameters of 17-4PH round bars here.
On some of them I have done: Solution + 24hr under zero +PH
On some of them I have done: Solution + 24hr under zero +PH +PH
As you can see the results are not according to handbook or other...
Hi
Is there anybody to have good experience about doing double aged condition of 17-4 PH round bars diameter around 500mm? same as 620C / 550C or 760C / 580C or 650C / 550C or so on?
I want to know the effect of double aging on yield and U.T.S strength and impact energy too.
Please if anybody...
