Microsilica, or silica fume, is an amorphous type of silica mostly collected as byproduct of the silicon and ferrosilicon alloy production. In this work, low shrinkage alumina-mullite ceramic composites were prepared from mixtures of calcined alumina, silica fume and aluminum metal powder and sintered at 1550 o C for 2 hrs. The influence of silica fume and aluminum powder on the densification p...

A surface alloying technique is developed to enrich the internal surfaces of low‐carbon steel casting with nickel or and chromium. This unique involves incorporation (Ni), chromium (Ni + Cr), stainless (SS) powders into a slurry, then applying slurry onto cores used in sand molds which comes contact molten metal during casting. Various properties, including coating thickness, composition, micro...

The main idea of this paper is improving fatigue response a low-alloyed carbon-manganese steel material manufactured by Direct Energy Deposition-Arc technique using post-heat treatments. Four series specimens are machined from 3D printed wall. samples austenitized following direct quenching and tempering processes at two different temperatures. All subjected to rotating bending loading conditio...