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Non Ferrous & Ferrous Metals Flashcards

1
Q

The term that describes metals
which have elements other than
iron as their base is ________

A

nonferrous

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2
Q

Aluminum is found in most clays, soils and rocks, but the principal commercial source is the ________.

A

ore bauxite

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3
Q

The 1xxx series of aluminum alloys
represents

A

commercially pure aluminum, of
99 percent or higher purity

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4
Q

Alloys within the 2xxx series utilize
________ as the principle alloying agent

A

copper

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5
Q

However, a major drawback to aluminum copper alloys is their susceptibility to ________ when improperly heat-treated.

A

inter-granular corrosion

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6
Q

Two of the most commonly
used in the construction of skins and rivets are ____ and ____.

A

2017 and 2024

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7
Q

The 3xxx series alloys have ________
as the principle alloying element, and
are generally considered __________

A

manganese, non-heat
treatable

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8
Q

The most common variation
is _____ , which offers moderate strength
and has goodworking characteristics.

A

3003

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9
Q

The 4xxx series aluminum is alloyed with ________ , which lowers a metal’s melting temperature. This results in an
alloy that works well for _________.

A

silicon, welding and brazing.

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10
Q

(5xxx series) These alloys possess good welding and corrosion-resistance characteristics.

A

Magnesium

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11
Q

which series has medium strength with good forming and corrosion-resistance properties.

A

6xxx series

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12
Q

If __________ are added to aluminum, the
resultant alloy carries a 6xxx series designation

A

silicon and magnesium

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13
Q

The 7xxx series aluminum alloys are made harder and stronger by the addition of ____

A

zinc

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14
Q

Some widely used forms of zinc-aluminum alloys are _______ .

A

7075 and 7178 (stronger)

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15
Q

1xxx to 7xxx

A

Pure Aluminum
Copper
Manganese
Silicon
Magnesium
Silicon + Magnesium
Zinc

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16
Q

a series of operations involving the
heating and cooling of metals in their solid state

A

Heat Treatment

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17
Q

Types of Heat Treatment:
It is the process of heating certain aluminum alloys to allow the alloying elements to mix with the base metal.

A

Solution Heat Treatment (Natural Aging)

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18
Q

Types of Heat Treatment:
Works by accelerating the aging process by cooling at an elevated temperature.

A

Precipitation Heat Treatment
(Artificial Aging

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19
Q

a form of heat treatment that softens steel and relieves internal stress.

A

Annealing

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20
Q

In Annealing, It is
heated about ___ degrees F above its critical temperature, soaked for specified time then
cooled.

A

50

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21
Q

the process of forging, welding, or machining usually leave stresses to the steel
that could lead to failure

A

Normalizing

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22
Q

To normalize, it is heated about ____ degrees F above it critical temperature and held there until the metal is _____ , then removed
from the furnace and allowed to cool in still ai

A

100 , uniformly heat soaked

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23
Q

reduces the brittleness imparted by hardening and produces definite
physical properties within the steel.

A

Tempering

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24
Q

does not benefit from heat treatment since there are no alloying materials in its structure.

A

Commercially pure aluminum

25
It is perhaps the most important of the non-heat-treatable aluminum alloys. It contains about 2.5 percent magnesium and a small amount of chromium.
Alloy 5052
26
Alloy 5052 is used for ______ such as gasoline or oil tanks, and for rigid fluid lines
welded parts
27
Reheat Treatment clad material is generally limited to no more than ______ reheat treatment
three
28
are used for castings and in its wrought form is available in sheets, bars, tubing, and extrusions.
Magnesium alloys
29
3 Basic Types of Crystals: all-around performance; good weldability; tough and strong both cold and hot, and resistant to oxidation.
A (alpha)
30
3 Basic Types of Crystals: bendability; excellent bend ductility; strong both cold and hot, but vulnerable to contamination
B (beta)
31
3 Basic Types of Crystals: strong when cold and warm, but weak when hot; good bendability; moderate contamination resistance; excellent forgeability
C (combined a and b)
32
contains about 68 percent nickel and 29 percent copper, along with small amounts of iron and manganese.
Monel
33
a series of high strength, high temperature alloys containing approximately 80 percent nickel, 14 percent chromium, and small amounts of iron and other elements
Inconel
34
is a copper alloy containing zinc and small amounts of aluminum, iron, lead, manganese, magnesium, nickel, phosphorous, and tin
Brass
35
is a copper alloy that contains tin
Bronze
36
is probably one of the most used copper alloys. It consists of approximately 97 percent copper, 2 percent beryllium, and sufficient nickel to increase its strength.
Beryllium
37
Any alloy containing iron as its chief constituent is called a ________.
ferrous metal.
38
The Society of Automotive Engineers (SAE) has classified steel alloys with a four-digit numerical index system. For example, one common steel alloy is identified by the designation SAE 1030. The first digit identifies the _______ in the steel, the second digit denotes the ______ of this alloying
principal alloying element, percent
39
the most common alloying element found in steel
Carbon
40
Low-carbon steels contain between ___ and ____ percent carbon. It is primarily used in safety wire, cable bushings, and threaded rod ends
0.10 and 0.30
41
Medium-carbon steels contain between ____ and ____ percent carbon. It is adaptable for machining or forging
0.30 and 0.50
42
High-carbon steels contain between ____ and ____ percent carbon. They are primarily used in springs, files, and some cutting tools.
0.50 and 1.05
43
causes steel to be brittle when rolled or forged and, therefore, it must be removed in the refining process
Sulfur
44
If all the sulfur cannot be removed its effects can be countered by adding _______ .
manganese
45
When _____ is alloyed with steel it acts as a hardener. When used in small quantities, it also improves ductility
silicon
46
_______ raises the yield strength of steel and improves low carbon steel's resistance to atmospheric corrosion. However, no more than ____ percent
Phosphorous, 0.05
47
_______ adds strength and hardness to steel and increases its yield strength
Nickel
48
It is alloyed with steel to increase strength and hardness as well as improve its wear and corrosion resistance
Chromium
49
_____ toughens steel, and ______ hardens it. Therefore, when both elements are alloyed they give steel desirable characteristics for use in high-strength structural applications.
Nickel, chromium Nickel-Chromium Steel
50
a classification of corrosion-resistant steels that contain large amounts of chromium and nickel.
Stainless steel
51
The corrosion-resistant steel most often used in aircraft construction is known as ___ steel because it contains 18 percent chromium and 8 percent nickel
18-8
52
also referred to as 200 and 300 series stainless steels and is a solid solution of pearlite, an alloy of iron and carbon, and gamma iron, which is a nonmagnetic form of iron.
Austenitic Steel
53
are primarily alloyed with chromium but many also contain small amounts of aluminum and do not respond to heat treatment
Ferritic Steel
54
____________ is a 400 series of stainless steel. These steels are alloyed with chromium only and therefore are magnetic
Martensitic steel
55
. It reduces the grain size of steel and increases both its impact strength and elastic limit. This accounts for its use in high-strength structural members and engine cylinder barrels.
Molybdenum
56
__________'s toughness and wear resistance make it a good material for engine cylinders and other highly stressedengine parts
Chrome-Molybdenum
57
increase both ultimate tensile strength and toughness. Most wrenches and ball bearings are made of this
Vanadium
58
_______ has an extremely high melting point and adds this characteristic to steel it is alloyed with
Tungsten

Aircraft Material (7 decks)

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