
(a)
Interpretation:
The pouring temperature needs to be determined, from the provided temperature vs time, cooling curve for Al-Si.
Concept Introduction:
A cooling curve is a schematic representation of phase change of matter, characteristically from liquid to solid or gaseous to solid.
The temperature is plotted on Y-axis.
The time is plotted on X-axis.
In this variable, time is independent variable and temperature is a dependent variable.
The initial point of the graph is designated as 'pouring temperature'.
(b)
Interpretation:
The superheat temperature needs to be determined.
Concept Introduction:
A cooling curve is a schematic representation of phase change of matter, characteristically from liquid to solid or gaseous to solid.
The temperature is plotted on Y-axis.
The time is plotted on X-axis.
In this variable, time is independent variable and temperature is a dependent variable.
The initial point of the graph is designated as 'pouring temperature'.
(c)
Interpretation:
The liquidus temperature needs to be determined.
Concept Introduction:
A cooling curve is a schematic representation of phase change of matter, characteristically from liquid to solid or gaseous to solid.
The temperature is plotted on Y-axis.
The time is plotted on X-axis.
In this variable, time is independent variable and temperature is a dependent variable.
The initial point of the graph is designated as 'pouring temperature'.
(d)
Interpretation:
The eutectic temperature needs to be determined.
Concept Introduction:
A cooling curve is a schematic representation of phase change of matter, characteristically from liquid to solid or gaseous to solid.
The temperature is plotted on Y-axis.
The time is plotted on X-axis.
In this variable, time is independent variable and temperature is a dependent variable.
The initial point of the graph is designated as 'pouring temperature'.
(e)
Interpretation:
The freezing range temperature needs to be determined.
Concept Introduction:
A cooling curve is a schematic representation of phase change of matter, characteristically from liquid to solid or gaseous to solid.
The temperature is plotted on Y-axis.
The time is plotted on X-axis.
In this variable, time is independent variable and temperature is a dependent variable.
The initial point of the graph is designated as 'pouring temperature'.
(f)
Interpretation:
The local solidification time needs to be determined.
Concept Introduction:
A cooling curve is a schematic representation of phase change of matter, characteristically from liquid to solid or gaseous to solid.
The temperature is plotted on Y-axis.
The time is plotted on X-axis.
In this variable, time is independent variable and temperature is a dependent variable.
The initial point of the graph is designated as 'pouring temperature'.
(g)
Interpretation:
The total solidification temperature needs to be determined.
Concept Introduction:
A cooling curve is a schematic representation of phase change of matter, characteristically from liquid to solid or gaseous to solid.
The temperature is plotted on Y-axis.
The time is plotted on X-axis.
In this variable, time is independent variable and temperature is a dependent variable.
The initial point of the graph is designated as 'pouring temperature'.
(h)
Interpretation:
The composition of alloy needs to be determined.
Concept Introduction:
Phase diagram is used to represent the

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Chapter 11 Solutions
Essentials Of Materials Science And Engineering
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