A new type of P91 heat-resistant pipeline steel ingot was prepared by feeding Al twisted wire into a melt through multi-point regional micro-supply method, combined with electromagnetic stirring. The type, shape, and size inclusions in the after forging were then analyzed scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), transmission (TEM). results showed that four types...

Dissimilar steel welds between stainless and mild steels are necessary for the efficient utilization of in construction. In present work, a dissimilar large-sized ingot was fabricated by press bonding Q235 to SUS 304 at 1100–500 °C. The microstructure bonded interfaces has been characterized scanning electron microscopy, probe microanalysis, transmission together with tensile tests evaluate str...

Minority carrier lifetimes were measured to determine the effect of phosphorus gettering on cast multicrystalline silicon substrates from central and end regions of two different ingots. One ingot exhibited visibly inferior crystallographic structure, and consistently showed lower lifetimes. For the low quality ingot, wafers from the bottom region did not respond to gettering, whilst those from...

The presence of the eutectic phase (delta ferrite + M23C6) in martensitic stainless steels brings significant deterioration in-service mechanical properties critical components such as turbine shaft made these alloys. In present study, thermodynamic and kinetics formation during solidification reheating stages before forging a large size X38CrMo16 steel ingot are investigated. Material characte...