dear all
I have a computer originally configured with a fedora 23 and 2 disks sata raid1 software.
Now my pc is out (it is not possible to turn it on, microprocessor problem)
so my question is:
If I connect my 2 sata disk to another DIFFERENT pc (different as hardware) what happen?
How can I recover data over disks (I think they are not damaged)

thanks a lot

Depends on how you had those disks configured, and what you were booting from, and whether or not you were using hardware RAID or software RAID. If software RAID, and you were booting from it, it may work just fine. Same with hardware RAID, if you're able to move the controller from one machine to another.

Won't hurt anything to put them in and see if they boot/work. If you get any squirrely messages or are uncomfortable proceeding, post those messages and how you have things configured, and we can try to help. You do have backups, right?

the physical disk have 5 partitions (md0-4) in raid1 software with installed fedora 23

I have no backups :-(

may I damage the disk?

If I put new disk in my PC and late I connect only 1 of my old disk, may I see all data?

So again, is this what you're booting from??
Then you must not have any important data, so why not just format your disks??? ANY disks fail..I have seen big hardware RAID arrays lose everything due to firmware faults, power surges, etc. RAID is NO SUBSTITUTE for backups.
AGAIN, you can plug them in and see what happens, and if you get any messages you don't know what to do with, post them back here and we can try to help. And you can TRY to plug in one disk of the mirrored set, and it may work fine...but again, it may ask you if you want to break the mirrored set. The only way you're going to know is to do it/try it. We can speculate all day about what MIGHT happen with something we didn't configure/set up...but the only way to know is to do.