Improving the performance of electrical steels within magnetic circuits is essential to save energy. The domain refinement through local surface treatment by laser an effective technique reduce iron losses in grain-oriented silicon steels. To interpret mechanism this technique, we have quantitatively studied impact nanosecond pulse on properties Fe(3%wt)Si sheets. We measured total power loss a...

In the manufacturing process of electrical machines, laser cutting is widely used to produce laminations cores. The internal stresses introduced by high-energy beam will lead deterioration in magnetic properties non-oriented silicon steels. To accurately predict core losses it important analyze degree and mechanism steel sheets caused cutting. this paper, first, local 35WW250 at different posit...

Bainitic steels are now at the forefront of new and exciting developments in steel technology. This paper discusses how phase transformation theory is being exploited in the systematic design of every aspect of the new alloys, emphasising the immense influence that Professor Wayman has had on the development of the subject [1]. Technology of Bainitic Steels Gone are the days when industry could...

Pearlitic steels present very interesting mechanical properties when weldability requirements are not too severe. Thin gauge pearlitic steels require at least one intermediate annealing treatment between hot rolling and cold rolling. The globularised cementite in medium carbon steels provides then higher ductility, formability and machinability. On the other hand, in-line induction heating devi...

Carbonitriding of four types of steels, namely, low carbon steel (LCS), medium carbon steel (MCS), low alloy steel (LAS) and high alloy steel (HAS) was achieved using cyanide salt bath heat treatment process. The steels, after preheating, were heated in a diesel fired salt bath heat treatment furnace and then quickly quenched in different media including air, oil and brine. The heat treatment p...

Background: There has been little discussion of the third-order elastic constants of steels in the literature until now. In this study, the precise secondand third-order elastic constants of polycrystalline steels were measured under adiabatic and isothermal conditions. Method: Tomeasure theminute change in the propagation time of the elastic wave corresponding to the tensile stress, the unifor...

inspired multi-objective optimisation algorithm Jun Chena, Mahdi Mahfouf, Gaffour Sidahmed, doi:10.1016/j.engappai.2014.08.014 Highlights • We model mechanical properties of heat treated alloy steel using interpretable fuzzy models. • We demonstrate how to locate the ‘best’ processing parameters and chemical compositions. • We demonstrate how to achieve certain mechanical properties. • We demon...

the microstructure of dual phase steels can be considered as a matrix of ferrite phase reinforced by martensite particles. recent measurements show that the mechanical properties of the ferrite phase are changed with the distance from the martensite grains. in this paper, a new method has been proposed to consider this phenomenon in finite element modeling of dual phase steels microstructure. i...

this paper provides an overview on obtaining low-carbon ultra-fine grained dual-phase steels through rapid intercritical annealing of cold-rolled sheet as improved materials for automotive applications. a laboratory processing route was designed that involves cold-rolling of a tempered martensite structure followed by a second tempering step to produce a fine grained aggregate of ferrite and ca...