Two Phase Alloys and Cold Rolling : On the change of workability of low carbon steels by the isothermal annealing below A_1

摘要

The tensile, erichsen, hardness and microscopic tests were made with steel samples subjected to various isothermal annealing below A_1; the behaviour of cementite under the annealing and further its effects upon these properties were studied. The grain size and the microhardness of ferrite do not change by the annealing and, therefore, we conclude that the change of mechanical properties of the samples under consideration is dependent only to the behaviour or the form of cementite.