IT is generally accepted that the lattice parameter of retained austenite in quenched iron—carbon alloys increases continuously and linearly with the increase of carbon content. So far ...

As the temperature decreases, the austenite phase transforms into ferrite and pearlite. Due to the low carbon content of this steel, the majority of the resulting microstructure consists of ferrite, ...

The banded microstructure disappeared after welding and transformed to the coarse equiaxed ferrite grains in the heat-affected zone. Three types of austenitic microstructure formed in the weld center, ...