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Mod 6 > 6.2 > Flashcards

6.2 Flashcards

1
Q

Non Ferrous

A

No iron

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2
Q

1000 series

A

99% Pure Aluminium

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3
Q

2000 series

A

Copper

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4
Q

3000 series

A

Manganese

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5
Q

4000 series

A

Silicon

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6
Q

5000 series

A

Magnesium

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7
Q

6000 series

A

Magnesium and Silicon

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8
Q

7000 series

A

Zinc

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9
Q

8000 series

A

Lithium and others

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10
Q

Melting point of Pure Aluminium

A

660 °C

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11
Q

Relative Density of Pure Aluminium

A

2.7

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12
Q

Tensile Strength of Pure Aluminium

A

13 KSI

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13
Q

First Digit in Aluminium Association Inc

A

Alloy Type

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14
Q

Second Digit in Aluminium Association Inc

A

Modification

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15
Q

3rd and 4th Digit in Aluminium Association Inc

A

Purity of Aluminium in hundreds of a percentage

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16
Q

If second digit is a zero

A

Indicates the original alloy

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17
Q

What series is Duralumin

A

2000

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18
Q

Where are cast aluminium alloys used

A

Pump housings

Gearboxes

Hubs

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19
Q

What is work hardening

A

Grains in metal gain stresses as they are worked making it harder

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20
Q

Another name for Work Hardening

A

Cold Working or Strain Hardening

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21
Q

What is Solution Heat Treatment

A

Heating Metal to set Temp and rapidly quenching it

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22
Q

What is Age Hardening

A

Allowing Metal to naturally cool as it returns to its Natural / Original Hardness

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23
Q

Annealing

A

Work Hardened material heated to dissipate inner stresses making the material softer

24
Q

What is temper

A

Work used to describe the metal condition

Includes Hardness Malleability and Ductility

25
Q

What is Cladding

A

Pure Aluminium cold rolled onto AAlloy

Pure Aluminium oxides to form protective layer

5% of total thickness

26
Q

What is Artificial Ageing Or Precipitation Treatment

A

Replicating Age Harding

Approx 170 °C for 10 Hrs

27
Q

How long do you have to wait to rivet an Aluminium Alloy after Solution Heat Treatment

A

24 Hrs

28
Q

Why should you not Overheat Aluminium

A

Can cause brittleness weakness and roughness on surface

29
Q

How many times can you Heat Treat a Cladded Material and Why

A

3x

Long periods at high temp, Particles can move into Aluminium Alloy

30
Q

Failure to Quench a Material in time will

A

Impairs Corrosion Resistance

31
Q

How long between removal from Heat Treatment Furnace and Quenching

A

Max 7 seconds

32
Q

F

A

Fabricated

33
Q

H

A

Cold worked with / without Thermal Treatment

34
Q

H1

A

Cold worked without Thermal Treatment

35
Q

H2

A

Cold Worked and Partially Annealed

36
Q

H3

A

Cold Worked and Stabilised by Low Temp Heating

37
Q

What does the second digit after H mean

EG H2X

A

Degree of Hardness

38
Q

Hx2

A

1/4 hard

39
Q

Hx4

A

1/2 hard

40
Q

Hx6

A

3/4 Hard

41
Q

Hx8

A

Full Hard

42
Q

Hx9

A

Extra Hard

43
Q

O

A

Fully soft Annealed

44
Q

T

A

Heat Treated to Produce Stable Tempers

45
Q

T1

A

Cooled from Hot working

Naturally Aged

46
Q

T2

A

Cooled from Hot Working

Cold Worked

Naturally Hardened

47
Q

T3

A

Solution Heat Treated

Cold Worked

48
Q

T4

A

Solution Head Treated

Naturally Aged

49
Q

T5

A

Cooled from Hot Working

Artificially Aged

50
Q

T6

A

Solution Heat Treated

Artificially Aged

51
Q

T7

A

Solution Heat Treated

Stabilised

52
Q

T8

A

Solution Heat Treated

Cold Worked

Artificially Aged

53
Q

T9

A

Solution Heat Treated

Artificially Aged

Cold Worked

54
Q

T10

A

Cooled from Hot Working

Cold Worked

Artificially Aged

55
Q

W

A

Solution Heat Treated

56
Q

What series are not heat treatable

A

1000

3000

4000

5000

57
Q

Annealing Temp for Non Heat Treatable Alloys

A

350-400 °C

Mod 6 (8 decks)

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