Test 2. Chapter 9 Flashcards

1
Q

components:?

A

the elements or compounds which are present in the mixture

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2
Q

Phases:?

A

the physically and chemically distinct material regions that result

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3
Q

What information can we get from a phase diagram?

A
  1. # and types of phases
  2. amount of different phases in wt%
  3. compositions in each phases in wt%
  4. Phase evolution with temperature
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4
Q

solutions=?

A

solid solutions, single phase

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5
Q

mixtures=?

A

more than one phase

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6
Q

solubility limit?

A

max concentration for which only a single phase solution occurs

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7
Q

temperature and concentration change ____________

A

number of phases

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8
Q

if we know T and C, then we know

A

the number and type of phases present

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9
Q

tie line

A

connects the phases in equilibrium with each other-essentially and isotherm

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10
Q

eutectic

eutectoid

peritectic

A

connects the phases in equilibrium with each other-essentially and isotherm

solid phase in equation with two solid phases

liquid + solid 1 –> solid 2

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11
Q

PHASE DIAGRAM are useful tools to determine:

A

– the number and types of phases
– the wt% of each phase,
–and the composition of each phase
for a given T and composition of the system

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12
Q

Alloying to produce a solid a solution usually………..

A
    • increasing the tensile strength (TS)

- - decrease the ductility

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13
Q

binary ______ and binary ____________ allow for a range of microstructures

A

eutectics

eutectoids

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