The formation of precipitates during thermal processing of microalloyed steels greatly influences their mechanical properties. Precipitation behavior varies with steel composition and temperature history and can lead to beneficial grain refinement or detrimental transverse surface cracks. This work presents an efficient computational model of equilibrium precipitation of oxides, sulfides, nitri...

Abstract Electromagnetic non-destructive testing techniques provide an attractive solution to the problem of monitoring microstructural changes in steels undergoing heat treatment as they are non-contact, have a short response time and relatively inexpensive. However, take full advantage these it is necessary be able accurately measure magnetisation characteristics materials interest at tempera...

We investigate the predictive performance of specific analytical and numerical methods to determine effective magnetic properties two-phase steels at macroscale. utilize various mixture rules reported in literature for former, some which correspond rigorous bounds, e.g., Voigt (arithmetic) Reuss (harmonic) averages. For latter, we employ asymptotic homogenization together with finite element me...

The structural materials used for LMFBR are austeniticsteels from Type AISI 304, 316 or steels which are simi-lar. Investigations show that a leak-be fore-break conceptcan be established for LMFBR piping systems and components,due to the ductile behavior of these steels and the opera-ting conditions. A major element of this concept is theknowledge of fatigue crack growth...

It is conventionally assumed in the mass production of steels that the processing time must be reasonable and that the material must have uniform properties. The consequence is that short heat-treatments cannot be tolerated since the scale of engineered products may be so large that uniform temperatures cannot be achieved. Similarly, thermal treatments requiring several days or weeks are not co...

Equipment of ŽĎAS, a. s. electric steel plant enables to make commercial high-grade steels with guaranteed high internal purity. Making of super clean steels means essential enhancement in qualitative requirements that requests new technological elements as well as operative management of steel making and treatment process. In order to verify the possibility to make these steels under ŽĎAS, a.s...