Nickel Aluminum Bronze (NAB) and Manganese (MAB) are high-alloyed bronzes that increasingly employed in several industrial sectors, mainly related to hostile environments due their excellent properties against corrosion, cavitation, erosion improved mechanical relation other copper-based alloys. These materials very sensitive thermal treatments a multiphase microstructure as-cast condition. To ...

The article considers etch pits that appear in metals and alloys during metallographic etching as an artifact. optical contrasting tools capabilities, such dark field, polarized light, differential interference contrast detecting pits, are demonstrated.

Threads and fibers of different origin are considered as artifacts sample preparation metallographic sections, well samples some materials. The role various methods optical contrasting – dark‑field illumination, polarized light in the analysis paper, natural artificial is illustrated. presented materials can be used by scientists to identify errors preparation, describe non‑traditional objects.

One of the greatest environmental goals for aluminum alloys industry is generating higher quality products by introducing cleaner input materials while maintaining low production costs. A typical dilemma master alloy producers cleanness level since insoluble inclusions could serve as inoculants during solidification process. In this work, commercial Ti5B1 used grain refinement Al7Si4Cu and comp...

The paper details the studies carried out on a dual-size particulate composite prepared by stir casting using A 356 aluminum alloy and B4C powders. Three compositions, viz., A356 plus 2% (44µm size 105µm in 1:1 ratio), 4% (3:1 6% (1:3 ratio) were cast finger molds, from which test specimens for hardness tensile tests as well metallography. Vickers tests, microstructure analysis an optical micro...