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. 
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

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)  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 3

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)  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 4

____ is a compound of iron and carbon, Fe2C.

Accepted Answer

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

Question 5

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

Accepted Answer

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

Question 6

Explain the process of precipitation hardening.

Accepted Answer

Precipitation hardening is a heat treatm

Question 7

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 
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 8

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

Question 9

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 
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 10

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

Accepted Answer

eutectic c

Question 11

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 12

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

Accepted Answer

Solid matter is either crystalline or am

Question 13

____________________ 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...

Question 14

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

Question 15

Stainless steels rely on ____________________ for their resistance to corrosion.

Accepted Answer

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

Question 16

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

Question 17

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

Question 18

____________________ 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 19

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

Question 20

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

Exam 26: Welding Metallurgy

Which of the following is true of martensite?

How does an individual grain grow in a cast structure?

How is steel making similar to welding processes?

____ is a compound of iron and carbon, Fe2C.

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

Explain the process of precipitation hardening.

One BTU is defined as the amount of ____.

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

Silly Putty®is ____.

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

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

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

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

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

Stainless steels rely on ____________________ for their resistance to corrosion.

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

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.

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

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

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

Introduction to Welding

Safety in Welding

Shielded Metal Arc Equipment, Setup, and Operation

Shielded Metal Arc Welding of Plate

Shielded Metal Arc Welding of Pipe

Shielded Metal Arc Welding Aws Sense Certification

Flame Cutting Equipment, Setup, and Operation

Plasma Arc Cutting Equipment, Setup, and Operation

Related Cutting Processes

Gas Metal Arc Welding Equipment, Setup, and Operation

Gas Metal Arc Welding

Flux Cored Arc Welding Equipment, Setup, and Operation

Flux Cored Arc Welding

Gas Metal Arc and Flux Cored Arc Welding of Pipe

Gas Metal Arc and Flux Cored Arc Welding Aws Sense Certification

Gas Tungsten Arc Welding Equipment, Setup, and Operation

Gas Tungsten Arc Welding of Plate

Gas Tungsten Arc Welding of Pipe

Gas Tungsten Arc Welding Plate and Pipe Aws Sense Certification

Shop Math and Weld Cost

Reading Technical Drawings

Welding Joint Design and Welding Symbols

Fabricating Techniques and Practices

Welding Codes and Standards

Testing and Inspection

Weldability of Metals

Filler Metal Selection

Welding Automation and Robotics

Other Welding Processes

Oxyfuel Welding Equipment, Setup, and Operation

Oxyacetylene Welding and Brazing, Braze Welding, and Soldering

Filters

____ is a compound of iron and carbon, Fe₂C.

Silly Putty^®is ____.