The depth of scientific understanding of martensitic transformations provides a strong foundation for the predictive design of materials exploiting artensitic phenomena. Recent theoretical advances supporting this capability include twoand three-dimensional applications of Landau–Ginzburg heory to martensitic nucleation, and important refinements of multiscale kinetic theory. Accurate control o...

The oxidation of stainless steels 304 and 304L during hot rolling is studied in this paper. Results show the oxide scale thickness decreases significantly with an increase of reduction, and the oxide scales of both 304 and 304L stainless steels were found more deformable than the steel substrate. Surface roughness shows a complicated transfer during the hot rolling process due to the complexity...

3 IMR KINKEN Research Highlights 2012 IMR KINKEN Research Highlights 2012 To reduce the fuel consumption by automobiles, medium carbon steels for forging parts, such as shafts and connecting rods, must be further strengthened. When carbide-forming elements such as Ti, Nb, and V, are alloyed with carbon steels, a fine dispersion of alloy carbides and large precipitation hardening can be achieved...

continuous grain-boundary cementite can form and cause THE primary requirements for high-strength wire appliembrittlement.[4,5] Nevertheless, we have found that it is cations are tensile strength, ductility, and formability. Coldpossible to use pearlitic steels with carbon contents greater drawn plain-carbon pearlitic steels have commonly been than 0.8 wt pct without the formation of a continuo...

The Yoshida nonlinear isotropic/kinematic hardening material model is often selected in forming simulations where an accurate springback prediction is required. Many successful application cases in the industrial scale automotive components using advanced high strength steels (AHSS) have been reported to give better springback predictions. Several issues have been raised recently in the use of ...

A model has been created to allow the quantitative estimation of the fatigue crack growth rate in steels as a function of mechanical properties, test–specimen characteristics, stress–intensity range and test–frequency. With this design, the remarkable result is that the method which is based on steels, can be used without modification, and without any prior fatigue test, to estimate the crack g...

This paper presents an experimental comparative study of iron losses obtained by means of the Epstein frame, Ring Core and dynamometer tests with non-oriented electrical steel samples. The comparisons are qualitative and they are intended to show the importance of carrying out other tests to evaluate electrical steels in addition to the standard Epstein frame method. In industry, complex or cos...

Steels with a mixed microstructure of allotriomorphic ferrite, bainitic ferrite, retained austenite and martensite have potentially good combinations of high strength and formability. This work describes a kinetic theory for the formation of bainite in steels where the precipitation of carbides is suppressed. The theory is based on the mechanism of transformation. It includes, for example, a nu...

On the one hand, many models of language formation and self-organization were developed in the last decade, under the general theoretical umbrella of semiotic dynamics (Steels, 2003). One of the best studied model is the naming game (Kaplan, 2005), in which a population of agents builds a shared lexicon, associating words and meanings, through cultural evolution and selforganization. In these s...

We report the results of magnetic measurements on austenitic stainless steels and duplex stainless steels using a magnetic hysteresis scaling technique. Unlike saturation hysteresis loops, this scaling technique, which uses a set of minor hysteresis loops, can be used in low measurement fields. We show that there is a universal scaling power law between minor-loop parameters, which is independe...