6.2

Question 1

What are the properties of Titanium

Answer 1

Resists heat
Good strength to weight ratio
Corrosion resistant

Question 2

How do we machine titanium

Answer 2

Plenty of cutting fluid

Use sharp cobolt drills

Question 3

What are the risks with working with Titanium

Answer 3

At high temp can ignite spontaneously

Question 4

What are the properties of aluminium alloys

Answer 4

3x lighter than steel

Produced in cast or wrought form

Question 5

Describe cast Al alloy

Answer 5

Coarse and brittle

Question 6

Describe wrought al alloy

Answer 6

Compressed and malleable

Question 7

How do we identify aluminium alloy

Answer 7

A 4 digit code
The first number is the major alloying element
Second is additional elements
The last are other elements in the group

Question 8

1- wrought

Answer 8

99% aluminium

Question 9

2 - wrought

Answer 9

Copper

Question 10

3 - W

Answer 10

Manganese

Question 11

4 W

Answer 11

Silicon

Question 12

5 W

Answer 12

Magnesium

Question 13

6 W

Answer 13

Magnesium and silicon

Question 14

7 - W

Answer 14

Zinc

Question 15

8 - W

Answer 15

Other

Question 16

1- C

Answer 16

Aluminium

Question 17

2- C

Answer 17

Copper

Question 18

3- C

Answer 18

Silicon with copper or magnesium

Question 19

4 - C

Answer 19

Silicon

Question 20

5 C

Answer 20

Magnesium

Question 21

6- C

Answer 21

Unused

Question 22

7 - C

Answer 22

Zinc

Question 23

8 C

Answer 23

Tin

Question 24

9 c

Answer 24

Unused

Question 25

What is cladding

Answer 25

A thin layer of pure Al with 1% zinc on both sides

Question 26

What does cladding protect against

Answer 26

Corrosion

Question 27

Do we quench during annealing

Answer 27

No

Question 28

What solution do we use in solution heat treating

Answer 28

Sodium or potassium nitrate

Question 29

How quickly do we have to quench during solution heat treating

Answer 29

10 seconds or risk inter granular corrosion

Question 30

How do we harden alloys

Answer 30

Cold working
Natural hardening
Artificial hardening / precipitation age hardening

Question 31

What does the code T3 mean

Answer 31

Cold worked

Question 32

What does the code T4 mean

Answer 32

Natural age

Question 33

What does the code T6 mean

Answer 33

Artificial age

Question 34

What does FOHWT stand for

Answer 34

Fabricated, annealed, strain hardened, solution treated and heat treated

Question 35

How many times can we hear treat a cladded material

Answer 35

A maximum of 3

Question 36

What are some qualities of magnesium allows

Answer 36

Lighter than. Air 
Prone to corrosion 
Difficult to work with 
Prone to cracking 
Highly flammable

Question 37

What do we put out magnesium alloy fires

Answer 37

Dry powder, hydrogen or argon extinguisher

Or sand

Question 38

What does the code AZ91 mean

Answer 38

9% Al and 1% Zinc

Question 39

What does GLARE stand for

Answer 39

Glass reinforced laminate

Question 40

What are the benefits of GLARE Materials

Answer 40

Fatigue resistant 
Impact resistant 
Flame resistant 
Anti corrosive 
Easy to make and repair 
Thermal isolation 
No of layers determine strength