: Occurs when two different metals are in electrical contact in a corrosive environment.
Engineers must quantify how a metal will behave under stress to ensure safety. Engineering Metallurgy - Applied Physical Metal...
: As liquid metal cools, "nuclei" form and grow into grains . The boundaries where these grains meet (grain boundaries) significantly influence strength. 2. Phase Diagrams and Alloying : Occurs when two different metals are in
: Techniques include alloying (e.g., adding Chromium for Stainless Steel), coating (galvanizing), or cathodic protection. Summary Table: Processing vs. Structure Process Step Microstructural Effect Resulting Property Change Cold Working Increases dislocation density Higher strength, lower ductility (Strain Hardening) Full Anneal Coarse grain growth Maximum softness and ductility Quenching Forms Martensite (BCT structure) Extreme hardness, high brittleness Alloying Solid solution strengthening Increased resistance to deformation Metallurgy and its Extraction - Longdom Publishing The boundaries where these grains meet (grain boundaries)
: Heating and slow cooling to soften the metal and improve ductility.
: The most critical diagram in metallurgy. It explains how adding carbon to iron creates everything from soft wrought iron to hard tool steels.