normalizing high alloy steel

[butcher_block]

so lets say i got some laminated steel that had a reall high alloy core and wanted to make sure the grain size was not out of this world

can it be done?
how should it be done?

i have a even heat and LN so you know what i ll be working with
thanks

 

[deker]

I'd say that you should look at the manufacturer's HT info and rul a full anneal/spheroidizing if you have the recipe...

-d

 

[mete]

If it's an air hardening steel you can't normalize [heat above critical and air cool]. The best you could do is subcritical anneal [1200 F temper ] to give you fine spheroidize structure .Then HT ,assuming you know the alloy of the core and outer sections....Any specific alloys in mind ?

 

[butcher_block]

its 410/cpm10v

i just was not sure about if full anneal was the only way to go ( i know welding heat is not real good to the grain)

have data sheet so least i got that info

 

[mete]

Rereading your post I was assuming that you're starting out with a hardened laminate ? If not I think I would harden, [take above critical , air cool] then subcritical anneal, then reharden.

 

[Satrang]

If you are dealing with a PM core, anything you do to the material thermally will typically increase the grain size. If it's hardened and at the right tempered hardness, leave it alone. If it is in the annealed state, heat treat it following the 10V treatment for hardening.