Bluish and purple after heat treat

[sladeblade]

Hi guys,
So i just finished heat treating some D2 blades. I quenched them between some angle aluminum. The thing is there are areas on the blade where it is blue or purplish...I'm not sure what that means. The rest of the blade is kind of a flat grayish color. Does that mean those areas didn't quench correctly? If so, is there any way to correct it so I don't have areas where it's soft?

Thanks guys!

 

[Stacy E. Apelt - Bladesmith]

Mosyt likely means nothing at all.

 

[sladeblade]

Mosyt likely means nothing at all.

Thank you! That's encouraging. I was hoping not to have to re-heat treat them or something.

 

[SBuzek]

They are probably find, most likely oxidation coloring from left over oxygen in the foil packet or a small hole in the packet.

Stan

 

[Frank Niro]

It means they can look pretty even now before being finished, at least I think they can. Frank