Light Materials Flashcards

1
Q

What is the most highly produced metal based material?

A

Iron

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2
Q

What is the most abundant metal based material?

A

Aluminium

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3
Q

What is the Crystal structure of Aluminium Alloys?

A

FCC

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4
Q

What are the major alloying elements for Aluminium?

A
  • Copper
  • Magnesium
  • Silicon
  • Zinc
  • Manganese
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5
Q

Describe the process of age hardening of alu alloys

A
  1. Solution treatment in alpha field
  2. Rapid cooling or quenching usually to room temp
  3. Ageing at appropriate temps for decomposition
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6
Q

5 examples of aluminium alloy applications

A
  • Pistons
  • Cast Engine Block
  • Aerospace
  • Construction
  • Containers and Packaging
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7
Q

What is the Crystal structure of Magnesium Alloys?

A

HCP

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8
Q

Major Alloying elements for magnesium

A
  • Aluminium
  • Zinc
  • Manganese
  • Silicon
  • Copper
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9
Q

Main advantage for magnesium alloys?

A

Low Density

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10
Q

Main Limitation of magnesium alloys?

A

Highly Flammable

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11
Q

5 examples of Magnesium Alloy applications

A
  • Cladding of fuel rods in nuclear power stations
  • Aerospace Industry
  • Light-weight vehicles for the future
  • Laptop Shells
  • Biomaterials
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12
Q

What is the Beta Transus temp for pure Titanium?

A

882 degrees celcius

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13
Q

What is the crystal structure of high temp titanium?

A

BCC

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14
Q

What is the crystal structure of low temp titanium?

A

HCP

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15
Q

Main advantages of titanium alloys

A

High strength-weight ratio

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16
Q

Main limitation of Titanium alloys

A

High Cost

17
Q

5 examples of industries using Titanium Alloys

A
  • Aerospace
  • Chemical Plants
  • Automotive
  • Medicine
  • Construction
18
Q

Applications of alpha and near alpha titanium alloys

A
  • Aircraft hydraulic and fuel systems

- Spacecraft

19
Q

Properties of alpha and near alpha titanium alloys

A
  • Intermediate strength
  • Better for cold working
  • excellent weldability
  • excellent corrosion resistance
20
Q

Applications of alpha + beta titanium alloys

A
  • Aerospace industry
  • Automotive industry
  • Medical
21
Q

Properties of alpha + beta titanium alloys

A
  • Highest strength-weight ratio
  • superior corrosion resistance
  • High temperature capabilities
22
Q

Applications of beta and near beta titanium alloys

A
  • Aerospace airframes

- Aircraft Engines

23
Q

Properties of beta and near beta titanium alloys

A
  • High strength
  • High Hardenability
  • Good Fracture toughness