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MEEN 360
The Science and Engineering of Materials ch.10
18
Mechanical Engineering
Undergraduate 3
04/03/2011

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Term
For a binary phase diagram, the composition of the phases on a two-phase region can be determined by
Definition
The tie line
Term
For a binary phase diagram, the amounts of each phase present in a two-phase region can be determined by
Definition
The lever rule
Term
A phase diagram where only two elements or compounds are present is called a
Definition
Binary phase diagram
Term
A phase has the following characteristics except A phase diagram gives the following information about an alloy
Definition
Phases and composition
Term
It is a material that exhibits properties of a metallic material and is made of multiple elements
Definition
Alloy
Term
In a solid solution, increasing the number of impurites usually affects the properties of the solution as follows:
Definition
Tensile strength, yield strength and ductility increase
Term
Forming a solid solution strengthens the host material because
Definition
The stress introduced by the impurity atoms stop dislocations
Term
The difference between unlimited and limited solubility of solids is that
Definition
Unlimited forms only one phase
Term
Homogenization heat treatment...?
Definition
Heats the casting to a temperature below the nonequilibrium solidus
Term
In a binary phase diagram the vertical axis is temperature and the horizonal axis is...?
Definition
Material composition
Term
In a binary phase diagram, when a material is in a two phase region, how do you find the composition of each phase?
Definition
Using the endpoints of the tie line
Term
Macrosegregation occurs over...?
Definition
Long distances, between the surface and the center of the casting
Term
Microsegregation occurs over...?
Definition
Short distances, often between dendrite arms
Term
Spray atomization is a...?
Definition
Solidification process of small droplets into a powder
Term
The area between the liquidus and solidus curves is the...?
Definition
Freezing range
Term
The lever rule is used to calculate the...?
Definition
Relative amounts of each phase in the alloy
Term
The strength of copper increases by solid-solution strengthening until about what weight percentage of nickel is added?
Definition
67%
Term
What causes nonequilibrium solidication?
Definition
A fast cooling rate
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