As Hot Rolled Microstructures
- Microstructure of hot-rolled Fe –0.12% C –0.23% Mn –0.17% Si –0.74% Mo revealing a ferrite-pearlite microstructure with small patches of martensite (arrows). The many small black particles are small patches of pearlite, not inclusions. Originals at 1000X.
- Microstructure of hot-rolled Fe –0.94% C –0.51% Mn –0.32% Si –1.34% Cr alloy steel revealing a fully pearlitic matrix. Picral revealed a network of cementite in the prior-austenite grain boundaries (arrows). This is not visible using nital. Originals at 1000X.
- Microstructure of as-rolled Fe –1.31% C –0.35% Mn –0.25% Si high-carbon water hardenable tool steel. Note the Widmanstätten intragranular cementite that precipitated as pro-eutectoid cementite before the eutectoid reaction. Originals at 1000X.