15-5PH stainless steel castings are key components in fracturing trucks. However, DS-type inclusions can lead to fatigue failure of the material. To elucidate formation mechanism large-size inclusions, evolution, growth, and aggregation during vacuum oxygen decarburization, ladle refining, casting were studied. The results show that with sizes larger than 20 μm CaO–Al2O3–SiO2–MgO–CaS composite ...

Abstract Over the past few decades, steelmaking has reached its zenith in terms of annual productivity, and relevant processes have been developed over time to produce steel with maximum efficiency a shorter time. One prominent practices used extensively contemporary industries is Conarc Steelmaking Practice, which involves use electrical chemical Energy carry out melting decarburization respec...

In this paper, the structure, phase composition, dislocation substructure, and carbon redistribution in differentially quenched 100-meter rails after ultra long-term operation (passed gross tonnage since 2013 — 1770 mln. tons) are studied using modern materials science engineering approaches. The regularities of main parameters variations, such as changes a relative variety different morphologi...

The compatibility of Reduced Activation Ferritic/Martensitic Steel (RAFM) with liquid Li and molten-salt Flibe have been characterized and accessed. Static compatibility tests were carried out in which the specimens were immersed into liquid Li or Flibe in isothermal autoclaves. Also carried out were compatibility tests in flowing liquid Li by thermal convection loops. In the case of liquid Li,...