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Kemble > M6.1 Ferrous > Flashcards

M6.1 Ferrous Flashcards

1
Q

Josh is what?

A

Gay

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2
Q

Meg is what?

A

Bitch ass disabled n** with a fit mum

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3
Q

What is a ferrous metal?

A

An alloy containing iron

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4
Q

What are the characteristics of pure iron?

A

. Little deformation resistance
. Ductile
. Soft
. Dense
. Not corrosive resistant

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5
Q

What is the density of pure iron?

A

7.9g/cm^3

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6
Q

What the ratio of cast iron?

A

Low strength : weight

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7
Q

How is steel made?

A

Pig iron / cast iron re-melted in furnace with carbon added

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8
Q

What are the problems with steel?

A

. High density
. Corrosive

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9
Q

Define strength?

A

Resistant to deformation

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10
Q

Define tensile strength

A

Resistant to stretching

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11
Q

Define compressive strength

A

Resistance to being pressed down on

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12
Q

Define shear strength

A

Resistance to sliding over each other (e.g shears)

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13
Q

Define torsional strength

A

Resistance to twisting

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14
Q

Define flexural strength

A

Resistance to bending

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15
Q

Define fatigue strength

A

Resistance to repeated loading

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16
Q

Define impact strength

A

Resistance to repeated beating

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17
Q

Define hardness

A

Ability to resist cutting, penetration or abrasion

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18
Q

Define malleability

A

Ability to bend, form, or shape without cracking

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19
Q

Define ductility

A

Ability to be drawn into wire, or shape without cracking

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20
Q

Define brittleness

A

Tendency to break or shatter under stress

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21
Q

Define conductivity

A

Ability to carry electrical or thermal energy

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22
Q

What is Meg?

A

Bitch wid fit mumma

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23
Q

Define thermal expansion

A

Ability to expand under heat

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24
Q

Define elasticity

A

Ability to return to original after stretching or bending

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25
Q

Define toughness

A

Ability to resist tearing or breaking when bent or stretched

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26
Q

Define fusibilty

A

Ability for metal to join by heating or melting

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27
Q

Define density

A

Mass per unit volume

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28
Q

How do alloy ingredients effect steel

A

Adding small amounts of other materials can change the properties of steel, these include carbon, sulphur, nickel and chromium

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29
Q

What process does carbon allow steel to undergo

A

Heat treated

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30
Q

If there’s is a high concentration of carbon what happens to the malleability and weldability?

A

Decreases

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31
Q

What are the percentages for a steel to be low carbon?

A

0.1 - 0.3

32
Q

What are the percentages for a steel to be medium carbon?

A

0.3 - 0.5

33
Q

What are the percentages for a steel to be high carbon?

A

0.5 - 1.05

34
Q

How does sulphur effect steel when rolled?

A

Become brittle

35
Q

What does silicon act as?

A

A hardener

36
Q

What does phosphorus raise when adds to steel?

A

Yield strength

37
Q

What properties does nickel add when added to steel?

A

Adds strength and hardness

38
Q

What does chromium do when added to steel?

A

Increases strength and hardness

39
Q

What does molybdenum do when added to steel?

A

. Reduces grain size
. Increases impact strength and elastic limit

40
Q

What does vanadium do when added to steel?

A

When with chromium it adds strength, toughness and ductility

41
Q

What does tungsten do when added to steel?

A

Increases the Melting Point

42
Q

What are the characteristics of stainless steel?

A

. High temperature resistance
. Corrosion resistant

43
Q

What are the 3 grades of alloyed steel?

A

. Austenitic
. Ferritic
. Martensitic

44
Q

Describe the facts you know about Austenitic steel

A

. Non-heat treatable (can only soften)
. 200/300 series
. Non-magnetic in annealed phase
. Corrosion resistant

45
Q

Describe the facts you know about Ferritic steel

A

. Can’t be heat treated (only softened)
. Magnetic, ductile
. Corrosion resistant
. 400 series (409,430)
. Hard to weld

46
Q

Describe the facts you know about Martensitic steel

A

. 400 series (410,420
. Corrosion resistant
. Magnetic
. Can be heat treated (hardened)

47
Q

How many digits are used in the alloy steel classification code?

A

4

48
Q

What do the 4 digits in the steel classification code represent? (In general not the numbers in detail)

A

The chemical composition of the alloy

49
Q

In detail what do the digits represent in the classification number of steel?

A

First digit - material type
Second digit - identifies material further
Third/fourth digit - carbon content (e.g 30 = 0.30%)

50
Q

What does SAE stand for?

A

Society of Automotive Engineers

51
Q

What occurs in steel heat treatment?

A

Heating and cooling carbon steel to change its properties whiteout shape/size change

52
Q

What is steel?

A

Iron alloyed with carbon

53
Q

What are the sections of the phase diagram for carbon steel?

A

. Ferrite
. Austenite
. Cemenite
. Pearlite

54
Q

What is ferrite?

A

Pure iron

55
Q

What is Austenite?

A

Cubic form of iron

56
Q

What is Cemenite?

A

Chemical compound of carbon and iron, very hard

57
Q

What is Pearlite?

A

Layered structure of Ferrite and Cemenite

58
Q

How is steel hardened?

A

By raising its temperature and giving time to cool

59
Q

What does heating and cooling do to an alloys grain structure?

A

Alters microstructure

60
Q

Describe Austenite (not Austenitic)

A

Face cantered cubic crystal, when ferrous metal is heated above critical temperature

61
Q

Describe Ferrite (not ferritic)

A

Body centred cubic crystal, crystal structure of ferrous metals before heat treatment

62
Q

Describe Martensite (not martensitic)

A

Body centred tetragonal crystal, ferrous metals heated above upper temperature and rapidly quenched

63
Q

What is the critical temp of metals?

A

Phase at which changes occur during heating or cooling

64
Q

Who has a 10 incher?

A

Lewis

65
Q

Who is secretly a man?

A

Meghan bazeley

66
Q

What is quenching?

A

Heating and rapidly cooling a material

67
Q

What is annealing and can they be used on aircraft?

A

. Softens steels and relieves internal stresses ( soak 10^C above critical limit)
. Can’t be used on aircraft

68
Q

What is normalising?

A

Heating steel to 38^C above upper limit and soaking, then left at room temperature to cool.
Any material that’s been welded or forged

69
Q

What is tempering and what will it do to the material?

A

Used after quenching as the steel is brittle, decreases hardness and increases ductility. Can only be used for high carbon steel. Low temp process

70
Q

What can steels temperature be determined with?

A

Crayons, pellets, paints that melt at certain temp

71
Q

What is case hardening?

A

. Used for aircraft components under high pressure
. Makes outer layer hard and core stays soft

72
Q

What is direct hardening?

A

. Flame induction/hardening process
. Surface heated very quickly then cooled very quickly

73
Q

What is flame hardening?

A

Heating with fire torch then immediately quenching with jet of water

74
Q

What is induction hardening?

A

. Heated by induction coil
. Them immediately quenched by water jet

75
Q

AISI

A

American iron steel institute

76
Q

SAE

A

Steel Automotive engineering

77
Q

Carbarise and nitsrise do a question

A

Kemble (39 decks)

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