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Metal Alloys Flashcards

1
Q

Are those of which iron is the prime constituent and are produced in larger quantities than any other metal type

A

Ferrous Alloys

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2
Q

Are alloys that are not iron based

A

Nonferrous Alloys

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3
Q

Types of Ferrous Alloys

A

Steels
Cast Irons

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4
Q

are iron-carbon alloys that may contain appreciable concentrations of other alloying elements

A

Steels

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5
Q

Has a carbon content of less than 1.0 wt%

A

Steels

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6
Q

Types of Steels

A

Low Alloy Steel
High Alloy Steel

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7
Q

Types of Low Alloys

A

Low-Carbon Steel
Medium-Carbon Steel
High-Carbon Steel

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8
Q

How are Low-Alloy Steels classified?

A

Carbon Content

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9
Q

Subclasses of Common Steels

A

Plain Carbon Steels
Alloy Steels

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10
Q

Types of Low-Carbon Steels

A

Plain Low-Carbon Steels
High Strength, Low Alloy (HSLA) Steels

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11
Q

Types of Medium-Carbon Steels

A

Plain Medium-Carbon Steels
Heat Treatable

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12
Q

Types of High-Carbon Steels

A

Plain High-Carbon Steels
Tool Steels

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13
Q

Types of High Alloy Steels

A

Tool Steels
Stainless Steels

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14
Q

Types of Cast Irons

A

Gray Iron
Ductile Iron
White Iron
Malleable Iron
Compacted Graphite Iron

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15
Q

Contain only residual concentrations of impurities other than carbon and a little manganese

A

Plain Carbon Steel

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16
Q

More alloying elements are intentionally added in specific concentrations

A

Alloy Steels

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17
Q

Are those steels produced in the greatest quantities

A

Low-Carbon Steels

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18
Q

Has a carbon content of less than about 0.25 wt%

A

Low-Carbon Steels

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19
Q

They contain other alloying elements such as copper, vanadium, nickel, and molybdenum in combined concentrations

A

High-Strength, Low-Alloy (HSLA) Steels

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20
Q

Has a combined concentration as high as 10 wt%

21
Q

Uses a basic four-digit system to designate the chemical composition of carbon and alloy steels

A

SAE System or AISI/SAE System
(American Iron and Steel Institute / Society of Automotive Engineers)

22
Q

They have carbon concentrations between about 0.25 and 0.60 wt%

A

Medium-Carbon Steels

23
Q

These alloys may be heat-treated by austenitizing, quenching, and then tempering to improve their mechanical properties

A

Medium-Carbon Steels

24
Q

They normally have carbon content between 0.60 and 1.4 wt%

A

High-Carbon Steels

25
Are the hardest, strongest, and yet least ductile of the carbon steels
High-Carbon Steels
26
Are highly resistant to corrosion in a variety of environments, especially the ambient atmosphere
Stainless Steels
27
What is the predominant alloying element of stainless steels
Chromium
28
Has at least 11 wt% of Cr
Stainless Steel
29
3 classes of stainless steels based on microstructures
Martensitic Ferritic Austenitic
30
Are capable of being heat-treated in such a way that martensite is the prime microconstituent
Martensitic Stainless Steel
31
Are the most corrosion resistant because of the high chromium contents and also the nickel additions
Austenitic Stainless Steel
32
Are composed of the α-ferrite phase
Ferritic Stainless Steel
33
Are a class of ferrous alloys with carbon contents above 2.14 wt% in practice but in most cases 3.0 and 4.5 wt%
Cast Irons
34
Is a metastable compound, and under come circumstances it can be made t dissociate or decompose to form α-ferrite and graphite
Cementite
35
In this, graphite exists in the form of flakes
Gray Iron
36
In this, graphite exists in the form of nodules
Ductile Iron or Nodular Iron
37
The matrix phase surrounding these particles is either pearlite or ferrite
Ductile Iron or Nodular Iron
38
A fracture surface of this alloy has white appearance
White Cast Iron
39
Most of its carbon exists as cementite instead of graphite
Cementite
40
White iron is used as an intermediary in the production of this cast iron
Malleable Iron
41
In this, graphite exists in the form of clusters or rosettes
Malleable Iron
42
In this, graphite exists in the form of wormlike/vermicular shapes
Compacted Graphite Iron (CGI)
43
Are brittle alloys that forming/shaping by deformation is not possible; they are casted
Cast Alloys
44
Can be mechanically deformed during forming/shaping operations
Wrought Alloys
45
Are alloys whose mechanical characteristics can be improved by heat treatments
Heat-Treatable Alloys
46
Common Copper Alloys
Brass Bronze
47
Is the most common copper alloy
Brass
48
What is the predominant alloying element in brass?
Zinc
49

Material Science (10 decks)

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