The influence of soaking and cooling rates on the final microstructure a R260Mn pearlitic railway steel subjected to fast heating is investigated. Fast-heating experiments followed or not by at different were performed using quenching dilatometry specimens obtained from rail head. Additional cyclic done investigate evolution during thermal cycling, which relevant for applications. characterized...

The pearlite lamellar spacing (λpearlite) is one of the microstructure parameters that define strength graphite iron (LGI). transformation kinetics λpearlite has been subject several modeling studies for steels, which demonstrated can be calculated as a function undercooling. However, it hard to find in literature models prediction LGI. In present work, fully pearlitic LGI was investigated wi...

In this work, the formation of austenite in intercritical interval under continuous heating and isothermal holding ductile iron with various chemistries was investigated using high-resolution dilatometry quantitative metallographic analysis. The study conducted fully ferritic pearlitic matrices as initial microstructures. Subsequently, a mathematical model based on Avrami's equation, that descr...

The evolution of microstructure and texture during wire drawing of pearlitic steel was studied using scanning electron microscopy and X-ray diffraction. Wire drawing induces elongation of ferrite grains with the development of <110> fibre texture. The cementite lamellae also have a tendency to reorient themselves along the wire axis with increasing strain. Viscoplastic self-consistent simulatio...

master moulds are used to cast copper anode moulds. these iron moulds are made of grey or nodular cast irons. according to desirable properties of ductile irons, it was expected that ductile cast iron moulds could have performed their nominal life. but in service, these moulds have not performed their nominal life and they have experienced premature failures due to warping and cracking. also gr...

The paper demonstrates the capability of developed phase transformation model to design cooling conditions in Stelmor process allowing for obtaining different types microstructures wire rod 32CrB4 steel. based on modified JMAK equation was using results tests conducted a DIL 805 A/D/T dilatometer. is composed sub-models ferritic, pearlitic, bainitic and martensitic transformations. Its predicti...

Pearlitic steel experiences excessive corrosion in a hot and humid atmosphere. The multiphase bainitic/martensitic structure was developed for better combination of strength ductility, especially rolling contact fatigue, but little attention to has been investigated. Corrosion behaviors steels obtained from bainitic-austempering (BAT) bainitic-quenching -partitioning (BQ&amp;P) processes were i...

Fatigue of metals is a subject of practical importance because many components and structures in service are subjected to varying loads and although the average stresses are often low, local concentration of stresses do not reduce the static strength but often lead to failure by fatigue. Micro-crack formation due to fatigue is more in ferritic-pearlitic annealed steel rather than in hardened an...