Which risk increases after a sand casting process?

💡 Explanation

Ductility near the surface will decrease because oxidation reduces grain boundary cohesion during cooling of the molten mold via the chemical process of embrittlement. Therefore the material becomes brittle rather than retaining ductility, because the oxidation alters its atomic structure.

• On a CNC lathe turning hardened steel, which outcome occurs when the rotational speed exceeds the tool's rake angle capacity?
• Which consequence results when thermal expansion surpasses container mechanical limits within a sealed refrigerant cylinder?
• Which outcome results when ground fault occurs in a distribution transformer's tertiary winding compensation circuit?
• Which outcome occurs when exceeding a Schottky diode's temperature rating?
• Which mechanism causes a pilot-induced oscillation phenomena in fly-by-wire aircraft?
• Which outcome occurs when a satellite's reaction wheels saturate near rotational limits?