Non-Ferrous Alloys Chapter 13

Non-ferrous Alloys Predate Iron Many non-ferrous alloys can be produced at lower temperatures than iron Copper, brass, and bronze all predate iron alloys

Aluminum Alloys Refined by electrolytic reduction of aluminum oxide Requires a lot of electricity Easy to form and light weight Work hardens well Easy to recycle Oxidation coating

Magnesium Alloys Electrolytically extracted from sea water! (And the Great Salt Lake) HCP structure leads to brittle properties Does not strain harden well (its already brittle) Magnesium-Aluminum alloys are strong and light weight

Beryllium Alloys Very light weight Brittle (HCP) Chemically reactive and toxic

Copper Some native copper exists (metallic copper) Usually refined from copper oxide FCC gives it good ductility Poor strength Work hardens well Pure copper has high electrical conductivity

Brass and Bronze Copper Zinc alloys are called brass Copper Tin alloys are called bronze Both are solid solution strengthened

Other Copper Alloys Precipitation hardened with Zirconium Chromium Beryllium Lead is added to improve machinability

Copper – Aluminum alloys Aluminum Brass Have a wide variety of properties The copper-aluminum phase diagram has a eutectoid Martinsite transformation

Other Non-Ferrous Alloys Nickel – (including Monel) Titanium (HCP) Refractory metals – high melting points