Metals (6/10/15) 0.0 / 5 ? Civil EngineeringMetalsUniversityNone Created by: SophieCreated on: 26-12-15 20:29 List some advantages of metals High tensile & compressive strength, high stiffness, ductile, recyclable 1 of 14 List some disadvantages of metals High cost, potential corrosion risk, vulnerable to fire 2 of 14 Manufacturing process of metals? Extracted, heated to seperate from oxides, then metal is tapped off and reheated to shape 3 of 14 A negative characteristic of metals? corrosion: rapid surface oxidation 4 of 14 Briefly explain metallic bonding? Free elections move around the area 5 of 14 What are properties of HCP crystal forms? Hexagonal close packed crystals 6 of 14 What are properties of FCC crystal forms? An atom in each corner, and one central to each face 7 of 14 What are POINT IMPERFECTIONS? They occur as the result of a vacancy or impurity within the crystal lattice 8 of 14 Forcing crstal bonds to move past the yield point does what? Causes a dislocation of the crystal, making it brittle BUT STRONGER 9 of 14 What does rapidly cooling metals produce? A finer grained strucuture 10 of 14 Stress= Load/Area 11 of 14 Strain= CHANGE IN LOAD/ORIGINAL LENGTH 12 of 14 What is plasticity? Non-recoverable deformation 13 of 14 Cyclic Loading? stress 14 of 14
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