Brainscape's Knowledge GenomeTM

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


See full index

Archaeomaterials Year 1 > Structures > Flashcards

Structures Flashcards

Different scales of structure in materials and examples

1
Q

How can processing change properties of a material?

A

Change chemical composition, rate of cooling, shape, and structure

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

What are the different scales of structure?

A

Atomic, Crystal, Micro, Macro

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

What does atomic structure affect?

A

Melting point, conductivity, reflectivity, density

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

What are metallic bonds?

A

An array of ion cores in a sea of delocalised electrons

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

What does crystal structure affect?

A

Density and mechanical properties such as strength and ductility

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are three different crystalline structures?

A

Body centre cubic, face centre cubic, close-packed hexagonal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What crystalline structure is not ductile?

A

Close-packed hexagonal

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

What arrangement is typical of Cu, Fe, Ni and Co?

A

Face centre cubic

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

What arrangement is typical of Mg and Ti

A

Close-packed hexagonal

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

How can you make a close-packed hexagonal arranged metal more ductile?

A

Heat to make atom planes more mobile

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does microstructure affect?

A

Mechanical properties; related with phases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is a phase?

A

A region of homogenous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the phases of steel with Fe and 0.18% C

A

White phase is ferrite, with 0.0012 C: is ductile but low strength; Dark pearlite is a composite of ferrite and Fe3C: Fe3C is strong, hard, brittle, and not ductile

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What type of material tends to be stronger, pure or impure?

A

Impure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What type of material tends to be more ductile, pure or impure?

A

Pure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does macrostructure affect?

A

Mechanical properties

17
Q

What is an example of macrostructure affecting mechanical properties?

A

Depending on how the Ni alloy of turbine blades are formed, the amount of creep caused by the high centrifugal force on the ends of the blades changes

18
Q

What is chill cast?

A

Cast with a high cooling rate; has a fine grain structure

19
Q

What is directionally solidified?

A

Control way in which grains are formed

20
Q

How is a single crystal formed?

A

Very high control of growth

21
Q

Which way of forming the Ni alloy turbine blade produces highest resistance to creep?

A

Single crystal

22
Q

Which way of forming the Ni alloy turbine blade produces lowest resistance to creep?

A

Chill cast

Archaeomaterials Year 1 (23 decks)

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