Brainscape's Knowledge GenomeTM

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


See full index

Materials > Chapter 10 > Flashcards

Chapter 10 Flashcards

1
Q

Alloy

A

A material made from multiple elements that exhibits properties of a metallic material

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

Binary phase diagram

A

A phase diagram for a system with two components

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

Copolymer

A

A polymer that is formed by combining two or more different types of monomers,
usually with the idea of blending the properties affiliated with individual polymers.

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

Coring

A

Chemical segregation in cast products, also known as microsegregation or interdendritic
segregation. The centers of the dendrites are rich in the higher melting point
element, whereas interdendritic regions, which solidify last, are rich in the lower melting point
element.

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

Dispersion strengthening

A

Strengthening, typically used in metallic materials, by the formation
of ultra-fine dispersions of a second phase. The interface between the newly formed phase and
the parent phase provides additional resistance to dislocation motion, thereby causing strengthening
of metallic materials (Chapter 11).

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

Freezing range

A

The temperature difference between the liquidus and solidus temperatures

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

Gibbs phase rule

A

Describes the number of degrees of freedom, or the number of variables
that must be fixed to specify the temperature and composition of a phase ( ,
where pressure and temperature can change, , where pressure or temperature is
constant).

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

Homogenization heat treatment

A

The heat treatment used to reduce the
microsegregation caused by nonequilibrium solidification. This heat treatment cannot eliminate
macrosegregation.

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

Hot isostatic pressing (HIP)

A

Sintering of metallic or ceramic powders, conducted under an isostatic
pressure.

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

Hot pressing (HP)

A

Sintering of metal or ceramic powders under a uniaxial pressure; used for production
of smaller components of materials that are difficult to sinter otherwise.

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

Hot shortness

A

Melting of the lower melting point nonequilibrium material that forms due to segregation,
even though the temperature is below the equilibrium solidus temperature.

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

Hume-Rothery rules

A

The conditions that an alloy or ceramic system must meet if the system is
to display unlimited solid solubility. The Hume-Rothery rules are necessary but are not sufficient for
materials to show unlimited solid solubility.

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

Interdendritic segregation

A

Coring

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

Isomorphous phase diagram

A

A phase diagram in which the components display unlimited

solid solubility.

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

Lever rule

A

A technique for determining the amount of each phase in a two-phase system.

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

Limited solubility

A

When only a certain amount of a solute material can be dissolved in a solvent
material.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Liquidus

A

Curves on phase diagrams that describe the liquidus temperatures of all possible
alloys.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Liquidus temperature

A

The temperature at which the first solid begins to form during solidification

19
Q

Macrosegregation

A

The presence of composition differences in a material over large distances
caused by nonequilibrium solidification. The only way to remove this type of segregation is to break
down the cast structure by hot working.

20
Q

Multiple-phase alloy

A

An alloy that consists of two or more phases.

21
Q

Phase

A

Any portion, including the whole of a system, which is physically homogeneous within it
and bounded by a surface so that it is separate from any other portions.

22
Q

Phase diagrams

A

Diagrams showing phases present under equilibrium conditions and the phase
compositions at each combination of temperature and overall composition. Sometimes phase diagrams
also indicate metastable phases

23
Q

P-T diagram

A

A diagram describing thermodynamic stability of phases under different temperature
and pressure conditions (same as a unary phase diagram).

24
Q

Segregation

A

The presence of composition differences in a material, often caused by insufficient
time for diffusion during solidification.

25
Q

Single-phase alloy

A

An alloy consisting of one phase

26
Q

Solid solution

A

A solid phase formed by combining multiple elements or compounds such that the
overall phase has a uniform composition and properties that are different from those of the elements
or compounds forming it.

27
Q

Solid-solution strengthening

A

Increasing the strength of a metallic material via the formation
of a solid solution

28
Q

Solidus

A

Curves on phase diagrams that describe the solidus temperature of all possible alloys

29
Q

Solidus temperature

A

The temperature below which all liquid has completely solidified

30
Q

Solubility

A

The amount of one material that will completely dissolve in a second material without
creating a second phase.

31
Q

Tie line

A

A horizontal line drawn in a two-phase region of a phase diagram to assist in determining
the compositions of the two phases.

32
Q

Triple point

A

A pressure and temperature at which three phases of a single material are in equilibrium

33
Q

Unary phase diagram

A

A phase diagram in which there is only one component

34
Q

Unlimited solubility

A

When the amount of one material that will dissolve in a second material
without creating a second phase is unlimited.

35
Q

Gibbs Phase Rule

A

P + F = C + N

36
Q

Gibbs Phase Rule - P =

A

of phases

37
Q

Gibbs Phase Rule - F =

A

of deg of freedom (T, P & %x)

38
Q

Gibbs Phase Rule - C =

A

of components

39
Q

Gibbs Phase Rule - N =

A

non-compositional variables (T & P)

40
Q

Conditions for Unlimited Solid Solubility (4 of them)

A

Size factor, Crystal structure, Valence, Electronegativity

41
Q

Do two examples of the lever rule

A

DO THEM!

42
Q

Solid-Solution Strengthening (alloying) is a primary …..

A

strengthening mechanism

43
Q

strength increases with increasing difference between

A

solvent (host) and solute (guest) size

44
Q

Phase diagrams are useful tools to determine (3 points)

A
    • the number and types of phases present,
    • the composition of each phase,
    • and the weight fraction of each phase given the temperature and composition of the system

Materials (8 decks)

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