EFFECT OF Mn PARTITION ON THE MECHANICAL PROPERTIES OF DUAL PHASE STEEL

M. BALBI; I.ALVAREZ-ARMAS; FARIAS, F.

Congreso; Materials Science and Engineering; 2018

Dual-phase (DP) steels offer an outstanding combination of high strength and good ductility as a result of their microstructure, in which a hard martensitic phase is dispersed in a soft ferrite matrix. They are commonly used in industries, specially the automobile industry. Automobile components of DP steels include car body panels, wheels, bumpers [1, 2], etc. in which the current drive is to reduce weight (for improved fuel efficiency) and to achieve higher crash resistance [3] (making them safer for consumers). Intercritical heat treatment is the simplest way to produce dual phase microstructure from low-alloyed steels. Before heat treatment at the (α+γ) region, the initial microstructure can be martensite, ferrite + pearlite or austenite, which will affect the final morphologies and properties of the resultant dual microstructure obtained after quenching.