Between 35 and 140 C/s the system at room temperature is a mixture of these two materials. The microstructure of martensite in austenite is shown in the micrograph. The black grains are the ...

FOR many years, metallurgists have believed that martensite, the hardening constituent in iron-carbon alloys, forms along the octahedral {111} planes of austenite. In 1933, Mehl, Barrett ...

When the alloy reaches the eutectoid temperature the untransformed austenite undergoes a transformation to pearlite and the already formed cementite remains unchanged. The microstructure is now a ...

SOME observations were made of the effect of heating rate on the martensite (M)→austenite (γ) reversion in a 300-grade 18 per cent nickel maraging steel. These are discussed here with reference ...

The three primary phases of steel microstructure are ferrite, cementite, and austenite ... in a hardened microstructure ...