Chapter 1, 2 and 3 Flashcards

1
Q

What are some things that can be learned from a study of metallurgy?

A

Properties of metals

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2
Q

What metal is the main ingredient in steel?

A

Iron

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3
Q

Why are other metals added to steel?

A

Different properties

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4
Q

Metals can be divided into two general categories. Name the two categories.

A

Ferrous and nonferrous

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5
Q

Reheating of metal to slightly soften it. Helpful to make metal more stress-free, distortion-free, and crack-free,

A

Tempering

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6
Q

Heat treating process that causes the metal to relax, removing the internal stresses.

A

Process Annealing

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7
Q

Produces a hard surface on the metal part while the interior core remains relatively soft and ductile.

A

Case Hardening

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8
Q

Workable; not brittle

A

Ductile

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9
Q

Large group of atoms or molecules

A

Family

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10
Q

Family of atoms that may be large enough to be seen with the naked eye

A

Grain or Crystal

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11
Q

Special kind of mixture

A

Solution

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12
Q

Solution in which both the solvent and solute are solids.

A

Solid Solution

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13
Q

two or more metals are dissolved together in a solid solution.

A

Alloys

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14
Q

Solutes that are dissolved

A

Alloys or alloying elements

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15
Q

Measure of resistance to deformation or a measure of resistance to penetration

A

Hardness

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16
Q

Hardness is ?

A

Strength, brittleness and ductility

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17
Q

Diameter size of the resulting impression (dent) is measured?

A

Brinell Hardness Testing Method

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18
Q

Fast and crude. Hard or Soft. Sample is scratched by the edge of a tool or object

A

Scratch hardness

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19
Q

First precision Quantitative hardness test for metals. Usually used on softer metals.

A

Brinell Hardness Testing method

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20
Q

Make very small indenture; use smaller loads; good for thin, brittle or small parts;

A

Microhardness Testing Method

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21
Q

Two type of microhardness testing methods

A

Vickers and Knoop Microhardness Testing

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22
Q

3 Main differences of Vickers and Brinell

A

Penetrator has a different shape; The load (force) is less; and the methods use different units.

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23
Q

Advantage of Vickers microhardness testing?

A

Used on harder materials because the pointed penetrator can probe into a hard surface more easily than a ball penetrator can; Can be used on smaller area; requires a smalller load.

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24
Q

Uses a smaller load than Vickers; Load of merely 25 grams can be used for extremely small areas. Does not have a square base.

A

Knoop Microhardness Testing Method

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25
Advantages of Knoop Microhardness testing
Does essentially no damage to the specimen; can be used on very thin materials and on small surface areas.
26
Most widely used of all metal hardness testing method. Eliminates the effects of small surface imperfections by applying a preliminary load (minor load) to the sample before the hardness test is taken
Rockwell Hardness Testing Method
27
What does atom mean?
Indivisible
28
5 Properties of metal
Ability to conduct electricity; ability to conduct heat; Hardness; high density; not transparent.
29
What type of particle is formed when two or more atoms are chemically bonded
a molecule
30
Two differences of compound and mixture
Compound is chemically joined and mixture is not and characteristics of mixture the same as the items that make it up.
31
In which hardness testing method is the hardest based on the diameter of the indenture?
Brinell hardness testing
32
Which hardness testing method does the impression look like a diamond, with one axis seven times as long as the other
Knoop microhardness testing method
33
In which hardness testing method is the hardest for you depending on the height of the bounce
Shore scleroscope hardness testing method
34
In which to hardness testing method is the hardest depending on the depth of the penetration rather than the width of the penetration
Rockwell hardness testing method and Rockwell superficial hardness testing method
35
In which hardness testing method is a diamond tipped magneticoStrictive Rod used
Sonodur
36
In which hardness testing methods is a minor load applied first to get through the outer surface of the metal before making the hardness test
Rockwell hardness testing method and Rockwell superficial hardness testing method
37
In most hardness testing methods the surface should be horizontal and as flat and smooth as possible. In which hardness testing method is this most critical?
Shore scleroscope hardness testing method
38
In which type of hardness testing method is the hardest dependent on the width of a square, diamond shape impression?
Vickers hardness testing method
39
In which hardness testing method is a very small impression made by diamond penetrator using a load so small it is measured in grams instead of kilograms?
Knoop Microhardness testing method
40
Which hardness testing method employees either a C, A, E, G or K scale?
Rockwell hardness testing method
41
List the hardness testing method that measures hardness in units of BHN?
Sonodur and Brinell
42
Microhardness testers another name for which hardness testing methods
Vickers and Knoop Micro hardness testing methods
43
What hardness testing method uses a 10 mm diameter ball in the 3000 kg force
Brinell hardness testing method
44
The 30 T scale refers to which hardness testing method
Rockwell superficial hardness testing method
45
Name the hardness testing method involves scratching the surface with 10 stones
Mohs scale hardness testing method
46
Name hardness testing method that uses either diamond point penetrator or a ball penetrator would loads of 15 kg, 30 kg, or 45 kg?
Rockwell superficial hardness testing method
47
Which hardness testing that is the fastest to use but does not give accurate numerical results
File hardness testing method
48
In the 40 5T scale, what does the 45 stand for?
The load in kilograms
49
What is the greatest hardness value, in Rockwell units, that steel can attain?
70 Rc
50
Which Rockwell hardness test, what skill is most commonly used for hard metals?
Rockwell "C "
51
Hardness reacting to loads
Strength
52
Hardness with little deformity before fracture
Brittleness
53
Hardness related to stretching
Ductility
54
Hardness relating to ease of cutting
Machinability
55
Hardness related to ease of stamping or extruding
Formability
56
Hardness related to impact response
Toughness
57
Based on the way hardness affects the resonant frequency of a piece of metal
Sonodur
58
Extractive metallurgy
The study of extraction and purification of metals from their ores
59
Mechanical metallurgy
Stacy effects of stress time temperature right of healing and cooling geometry of the metal and finish product and the effects of the environment
60
Physical metallurgy
Studies the effects of material microstructure on the properties of metals