Based on the metallographic studies of undercarriage wheels, which are operated within different periods time and have types degrees wear, it can be concluded that steel with chemical composition close to eutectoid one, equilibrium crystal lattice, should used for manufacturing. The microstructure working surfaces wheels fine pearlite, ideally sorbitol (fine type pearlite). These requirements m...

In this study we present a series of light-weight (6.24 to 6.42 g/cm3), Ti-rich Mo-Si-Ti alloys (?40 at.% nominal Ti content) with the hitherto best combination pesting and creep resistance at 800 1200 °C, respectively. This has been achieved by fine-scaled eutectic-eutectoid microstructures substantial fractions primarily solidified (Mo,Ti)5Si3. (Mo,Ti)5Si3 was found be oxidation-resistant in ...

The influence of the thermal condition steel on transformation temperatures two chromium hot-work tool steels was investigated. studied were in different states: soft -annealed state and hardened-and-tempered state. soft-annealed condition, i.e., fully annealed is a which matrix ferritic, carbon chemically bonded spherical carbides. other hand, means martensitic with uniformly distributed (prim...

The influence of carbon concentration variations on pearlite formation (20 h at 600 °C) in a case-carburized steel is investigated. resultant microstructure shows three distinct regions: carburized case, transition region, and the original core. microstructural from case to core regions observed be relatively sharp. investigated region (0.9 wt.% C) contains two types pearlite: ferrite + cementi...