Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

M6 Resit > 6.1 Ferrous materials✅(3) > Flashcards

6.1 Ferrous materials✅(3) Flashcards

1
Q

What does ‘ferrous’ refer to?

A
  • metals and alloys
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

An alloy containing iron as its main ingredient is called what

A

ferrous metal (and is magnetic)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the most common ferrous metal in aircraft structures

A
  • Steel
  • an alloy (with controlled amount of carbon and other materials)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the properties of pure iron?

A
  • ductile
  • soft
  • easily formed
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How is Iron oxide formed

A
  • Iron reacts with oxygen
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Advantage of cast iron

A
  • low strength to weight ratio
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What material is the most common man-made materials in the world

A

steel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the base material of steel

A

iron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How do you make steel

A

pig iron/cast iron is re-melted in a special furnace

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is Tensile strength?

A
  • Ability of a metal to withstand stress in tension
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is compressive strength?

A
  • Ability of a metal to withstand ‘pressing’ or ‘squeezing’
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is torsional strength?

A
  • ability to resist rotational shear
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is Flexural strength?

A
  • bending strength of a metal
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is impact strength?

A
  • Measures ability of a metal to resist shock
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is hardness?

A
  • ability to resist cutting, penetration, or abrasion
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is malleability?

A
  • ability to be bent, formed, or shaped without cracking
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is brittleness?

A
  • Materials tendency to break or shatter when exposed to stress
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is conductivity?

A
  • Property that enables a metal to carry heat or electricity
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is thermal expansion?

A
  • Property of a metal to expand when heated, and shrink when it is cooled
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is elasticity?

A
  • Metals tendency to return to its original shape after normal stretching/bending
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is toughness?

A
  • materials ability to resist tearing or breaking when bent or stretched
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is fusibility?

A
  • ability of metal to be joined by heating and melting
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the most common alloying element found in steel

A

carbon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Higher carbon content decreases the malleability and weldability of steel (T or F)

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the carbon content for low carbon steel?

A

0.1%-0.3%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is the carbon content for medium carbon steel?

A

0.3%-0.5%

27
Q

What is the carbon content for high carbon steel?

A

0.5%-1.05%

28
Q

What does sulphur cause steel to be when rolled or forged

A

Sulphur causes steel to be brittle

29
Q

What does silicon act as when alloyed with steel

A

hardener

30
Q

When using silicon in small quantities, what does it improve

A

ductility

31
Q

What does nickel do when added to steel

A
  • adds strength and hardness
  • increases yield strength
32
Q

What is the most widely used alloying elements used for aircraft structural steel?

A

molybdenum

33
Q

What does chromium do when alloyed with steel

A
  • increase strength and hardness
  • improve wear and corrosion resistance
34
Q

Molybdenum steels are extremely wear resistant and possesses a great deal of fatigue strength (T or F)

A

T

35
Q

What occurs when vanadium is combined with chromium ?

A
  • produces strong, tough, ductile steel alloy
36
Q

What are most wrenches and ball bearings made out of?

A

Chrome-vanadium steel

37
Q

Tungsten has an extremely high melting point (T or F)

A

T

38
Q

Stainless steel can be classified into 3 groups which are?

A
  • Austenitic
  • Ferritic
  • Martensitic
39
Q

What are Austenitic stainless steel referred as

A
  • referred as 200 and 300 series stainless steels
40
Q

What are Ferritic stainless steel part of

A
  • part of the 400 series of stainless alloys
41
Q

Ferritic stainless steel have what as their major alloying element

A

-chromium

42
Q

Ferritic stainless steels are magnetic (T or F)

A

T

43
Q

What is the major alloying element with martensitic?

A
  • Chromium (in the range of 11%-17%)
44
Q

What does the first digit for classification of steel identify?

A

the principal alloying element

45
Q

What does the last 2 digits digit for classification of steel identify?

A

average carbon content in %

46
Q

What type of stainless steel is used for cookware/food equipment?

A

Austenitic

47
Q

What type of stainless steel is used for kitchenware/exhaust/furnaces?

A

Ferritic

48
Q

What type of stainless steel is used for cutlery/surgical instruments/scissors/industrial blades?

A

Martensitic

49
Q

Steel is hardened by raising its temperature to above the upper critical temperature (T or F)?

A

T

50
Q

What is the critical temperature?

A
  • temperature at which a phase change occurs in a metal, during heating or cooling
51
Q

What is quenching?

A

-rapidly cool a material after heating in water/oil

52
Q

What is annealing?

A
  • softens steel and relieves internal stresses
53
Q

Why can annealed parts not be used on aircraft

A

due to soft and ductile nature

54
Q

Explain the annealing process

A

Heating a steel to 10*c above upper critical limit and heat soaking it at this temperature

55
Q

What is normalising?

A
  • involves heating steel to 38*c above its upper critical limit and soaking for prescribed time
56
Q

When normalising, how is the steel cooled?

A

at room temperature

57
Q

What is tempering

A
  • method used to decrease hardness
  • increasing ductility, toughness
58
Q

What is the least accurate method of estimating temperature?

A
  • observing colour of the material being heated
59
Q

What is direct hardening?

A

-surface heated rapidly to high temperatures
- then cooled rapidly (generally using water)

60
Q

Direct hardening consists of flame or induction hardening process (T or F)?

A

T

61
Q

How is the steel heated in induction hardening?

A

by an induction coil

62
Q

When the steel is heated to the necessary temperature (induction hardening) what occurs next?

A
  • current switched off
  • immediately quenched by jets of water
63
Q

What are the 2 methods to case harden

A
  • Carburising
  • Nitriding
64
Q

When do you usually carry out normalising

A
  • after welding

M6 Resit (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions