Question 1

Which of the following is true of martensite?

Accepted Answer

A)   It is the weakest of the transformation products of austenite.
B)   As formed, it is very hard and brittle.
C)   As formed, it is extremely useful in most engineering applications.
D)   Martensite cannot be tempered. B

Question 2

Silly Putty®is ____.

Accepted Answer

A)   ductile but has high impact strength
B)   ductile but has low impact strength
C)   brittle but has high impact strength
D)   tough but has low impact strength

Question 3

What is the most efficient way of converting molten steel into a usable product?

Accepted Answer

A)   Ingot casting
B)   Rolling
C)   Continuous casting
D)   Forging

Question 4

____ is a compound of iron and carbon, Fe2C.

Accepted Answer

A)   Ferrite
B)   Cementite
C)   Pearlite
D)   Austenite

Question 5

____ is the ease with which a metal will crack or break apart without noticeable deformation.

Accepted Answer

A)   Hardness
B)   Brittleness
C)   Toughness
D)   Strength

Question 6

Which of the following is a way of forming raw metal into a usable material?

Accepted Answer

A)   Forging
B)   Casting
C)   Rolling
D)   All of the above

Question 7

A(n) ____________________ is the lowest possible melting temperature of an alloy.

Accepted Answer

eutectic c...

Question 8

When the surface of an object is a little above ____ Fahrenheit, the vibrating frequency of the atoms gives off visible light which we see as a dull red glow.

Accepted Answer

A)   200 °
B)   600 °
C)   1,000 °
D)   1,600 °

Question 9

Explain the process of precipitation hardening.

Accepted Answer

Precipitation hardening is a heat treatm...

Question 10

How does an individual grain grow in a cast structure?

Accepted Answer

A)   From the outside surface toward the center
B)   Upward from the bottom
C)   Outward from the center to the edge
D)   Randomly in all directions A

Question 11

How is steel making similar to welding processes?

Accepted Answer

A)   Both use a flux to remove impurities.
B)   Both processes use an inert shielding gas to protect the molten metal from oxidation.
C)   Both have a way of controlling the carbon content to control the hardness of the metal.
D)   They really are not similar in any way. A

Question 12

____________________ is a measurement of the vibrating speed or frequency of the atoms in matter.

Accepted Answer

The answer of ____________________ is a measurement of the vibrating...

Question 13

Iron is called an ____________________ metal, because it exists in two different crystal forms in the solid state.

Accepted Answer

The answer of Iron is called an ____________________ metal, because...

Question 14

The phases and temperatures at which an alloy exists is summarized in a(n)  ____.

Accepted Answer

A)   crystal diagram
B)   WPS
C)   phase diagram
D)   phase graph

Question 15

One BTU is defined as the amount of ____.

Accepted Answer

A)   heat required to raise 1 pound of water 1 ° Fahrenheit
B)   energy required to raise 1 gram of water 1 ° Celsius
C)   heat required to raise 1 gallon of water from freezing to boiling point
D)   energy required to melt 1 gallon of water

Question 16

Stainless steels rely on ____________________ for their resistance to corrosion.

Accepted Answer

The answer of Stainless steels rely on ____________________ for their...

Question 17

What is the term used to describe the process of replacing some of the atoms in a crystal lattice with other metal atoms?

Accepted Answer

A)   Solid-solution hardening
B)   Precipitation hardening
C)   Recrystallization
D)   Normalizing

Question 18

Which quenching process results in the most rapid cooling of a part?

Accepted Answer

A)   Molten salt
B)   Oil
C)   Water
D)   Air

Question 19

What is the difference between crystalline and amorphic solids? Give examples of both.

Accepted Answer

Solid matter is either crystalline or am...

Question 20

____________________ is the ability of a metal to be permanently twisted, drawn out, bent, or changed in shape without cracking or breaking.

Accepted Answer

The answer of ____________________ is the ability of a metal...

Exam 26: Welding Metallurgy

Which of the following is true of martensite?

Correct AnswerverifiedB

Silly Putty®is ____.

Correct AnswerverifiedShow Answer

What is the most efficient way of converting molten steel into a usable product?

Correct AnswerverifiedShow Answer

____ is a compound of iron and carbon, Fe2C.

Correct AnswerverifiedShow Answer

____ is the ease with which a metal will crack or break apart without noticeable deformation.

Correct AnswerverifiedShow Answer

Which of the following is a way of forming raw metal into a usable material?

Correct AnswerverifiedShow Answer

A(n) ____________________ is the lowest possible melting temperature of an alloy.

Correct Answerverifiedeutectic c...View AnswerShow Answer

When the surface of an object is a little above ____ Fahrenheit, the vibrating frequency of the atoms gives off visible light which we see as a dull red glow.

Correct AnswerverifiedShow Answer

Explain the process of precipitation hardening.

Correct AnswerverifiedPrecipitation hardening is a heat treatm...View AnswerShow Answer

How does an individual grain grow in a cast structure?

Correct AnswerverifiedA

How is steel making similar to welding processes?

Correct AnswerverifiedA

____________________ is a measurement of the vibrating speed or frequency of the atoms in matter.

Correct AnswerverifiedShow Answer

Iron is called an ____________________ metal, because it exists in two different crystal forms in the solid state.

Correct AnswerverifiedShow Answer

The phases and temperatures at which an alloy exists is summarized in a(n) ____.

Correct AnswerverifiedShow Answer

One BTU is defined as the amount of ____.

Correct AnswerverifiedShow Answer

Stainless steels rely on ____________________ for their resistance to corrosion.

Correct AnswerverifiedShow Answer

What is the term used to describe the process of replacing some of the atoms in a crystal lattice with other metal atoms?

Correct AnswerverifiedShow Answer

Which quenching process results in the most rapid cooling of a part?

Correct AnswerverifiedShow Answer

What is the difference between crystalline and amorphic solids? Give examples of both.

Correct AnswerverifiedSolid matter is either crystalline or am...View AnswerShow Answer

____________________ is the ability of a metal to be permanently twisted, drawn out, bent, or changed in shape without cracking or breaking.

Correct AnswerverifiedShow Answer

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B

Silly Putty^®is ____.

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____ is a compound of iron and carbon, Fe₂C.

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Precipitation hardening is a heat treatm...
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A

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A

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Solid matter is either crystalline or am...
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