Bainite named for Edgar Bain formed when austenite cooled rapidly enough to avoid forming pearlite, but delayed long enough to prevent martensite

Bainite named for Edgar Bain formed when austenite cooled rapidly enough to avoid forming pearlite, but delayed long enough to prevent martensite diffusion dependent but does not form lamellar structures of pearlite

Bainite named for Edgar Bain formed when austenite cooled rapidly enough to avoid forming pearlite, but delayed long enough to prevent martensite diffusion dependent but does not form lamellar structures of pearlite like martensite, structure can be lathe or plate, suggesting shear as well as diffusion

Bainite named for Edgar Bain formed when austenite cooled rapidly enough to avoid forming pearlite, but delayed long enough to prevent martensite diffusion dependent but does not form lamellar structures of pearlite like martensite, structure can be lath or plate, suggesting shear as well as diffusion has some of hardness properties of martensite & some of toughness properties of pearlite

Bainite

Bainite

Bainite ferrite cementite

Bainite

Bainite

Bainite Lower bainite in high-carbon steels can be much tougher than corresponding Q + T steel Upper bainite - not especially tough