Thanks swall, its actually air cooled and I'm not sure whether it was in a salt bath for the hold. One last thing, how would I go about estimating the volume fractions from the pictures?
Kilian
It was held heated at 900C and held for an hour before the treatment cycle. I haven't got any hardness readings only the pictures to estimate the phase volumes.
Kilian
A small sample of 300M steel was held at 650C for 30 minutes and then quenched. I have included 2 pictures of the microstructure, one in the centre and one at the edge of the sample, and was hoping someone could help me identify them. I believe it is a bainitic structure with some martensite...
