ATAT104 - week 3
Where does aluminum come from?
Bauxite ore
Silicon Valley
Aluminum ore
Iron ore
What are the names of 2 processes that work our aluminum into useful shapes?
wrought and cast
bend and melt
mix and match
mold and smelt
What is the process of cold working the metal mean?
Working metal well below critical temperatures
Working metal just out of cooler
Forming metal below 70 degrees F
Molding metal on my dry ice
When extruding aluminum, it is forced through a die to desired shape?
It is in an gas form
It is in an liquid form
It is in an hot annealed state
It is in cold annealed state
NONFERROUS refers to all metals which have elements other than _____ as their base or principal element
Gold
Copper
Silver
Iron
Non-ferrous metals include Aluminum, Magnesium, Titanium, Copper, Inconel, and Monel. True or false?
True
False
Aluminum is?
Most widely used metals in modern aircraft construction
High strength to weight ratio
Comparative ease of fabrication
All of the other answers
When did Aluminum become a key strategic metal?
WWI
WWII
1903
1911
Aluminum is?
Corrosion resisting
Retains toughness at low temperatures
good conductivity of heat and electricity
All of the other answers
What is special about Aluminum?
High strength and weight ratio
Weldability
Its adhesiveness to materials
machinability
True or false? Corrosion resistance and scratch resistance can be enhanced by alclading and anodizing?
True
False
In nickel alloys what is the main ingredient?
Iron
Nickel
Aluminum
Stainless steel
Aluminum forming processes include
Deep-drawing
Roll-forming
All of the other answers
How is aluminum different from some carbon steels?
toughness at very low temperatures
doesn't become brittle like some carbon steels at very low temperatures
All of the other answers
Where can you find Monel being used in an aircraft?
Exhaust
Wheels
Skins
Fuselage
Where can you find Inconel being used in an aircraft?
Wheels
Skins
Fuselage
Turbine Engines
True or false? Monel = Nickel (68%) , Copper (29%) + Iron + Manganese
True
False
True or false? Monel = Nickel (68%), Copper (29%) , and a little bit of Iron & Manganese
True
False
Ture or false? Monel can be welded and machined
True
False
Which metal is the lightest metal used STRUCTURALLY in an aircraft?
Aluminum
Titanium
Manganese
Magnesium
What is the problem with the magnesium fire?
Hard to put out
Its explosive
Burns very bright
It doesn't last long enough
Where would you find pure Titanium in an aircraft?
Skins
Engines
Turbo chargers
Not used
Which one of these Titanium alloys is strongest when annealed?
Alpha Titanium alloys
Alpha-beta Titanium alloys
Beta-Titanium alloys
None of them are strong
Where would you find Copper being used in an aircraft?
Skins
Engine
Wheels
Wire
True or false? Composites are made of two materials: Resin and Fiber
True
False
When was Kevlar introduced?
1940s
1950s
1960s
1970s
Which type of fiber is most used in aerospace industry today?
Kevlar
Aramid fiber
Glass fiber
Carbon fiber
What is special about carbon fibers?
stiffness-to-weight ratios
Fatigue resistance
Chemical resistance
Thermal characteristics
All of the others
What is disadvantageous of composite?
high cost
Non-conductivity
Low resistance to impact
Hard to repair
All of the others
Which one of the following is a composite?
Adhesive
Aramid
Carbon fiber
All of the others
Where would you find super alloy in an aircraft construction?
Skins
Not used
Engines
Wheels
What are the advantages of supper alloy?
Excellent mechanical strength
Resistance to thermal creep deformation
Good surface stability
Resistance to corrosion or oxidation
All of the above
Wrought is?
Formed by physically working the metal into a shape
Formed by pouring a molten metal into a pre-shaped mold or form
Formed by pushing material through a die of the desired cross-section
Formed by relieving the internal stresses, soften the metal, make it more ductile
What is the process called when molten metal is poured in a pre-shaped form?
Extrusion
Casting
Molding
Cold-working
What is the process called when metal alloy is worked at an elevated temperature?
Hot-working
Casting
Molding
Cold-working
What is the process called when metal alloy is formed at well below critical temperature?
Hot-working
Casting
Molding
Cold-working
Extruding is?
forming material through a die of the desired cross-section
Physically working the metal into a shape
Formed by pouring a molten metal into a pre-shaped mold or form
Formed by relieving the internal stresses, soften the metal, make it more ductile
Which one of the following is a form of wrought?
Hot working the metal
Cold working the metal
Extruding the metal
All of the other answers
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