AMCR MODULE 3 Flashcards
The term ________ refers to all metals which have elements other than iron as their
base or principal constituent. This group includes such metals as aluminum, titanium,
copper, and magnesium, as well as such alloyed metals as Monel and Babbitt.
Non-Ferrous
is a white lustrous metal which stands second in the
scale of malleability, sixth in ductility, and ranks high in its resistance to corrosion.
Pure Aluminum
the principal alloying ingredients are manganese, chromium,
or magnesium and silicon show little attack in corrosive environments.
Aluminum Alloys
Alloys in which
substantial percentages of copper are used are more?
susceptible to corrosive action
The total percentage of alloying elements is seldom more than _____ percent in the
wrought alloys.
6 or 7%
one of the most widely used metals in modern aircraft construction. It is
vital to the aviation industry because of its high strength to weight ratio and its
comparative ease of fabrication. The outstanding characteristic of it is its light
weight.
Aluminum
Aluminum melts at the comparatively low temperature of ___?
1,250 °F
The various types of aluminum
Casting Alloys and Wrought Alloys
(those suitable for casting in
sand, permanent mold, or die castings)
Casting Alloys
(those which may be shaped
by rolling, drawing, or forging).
Wrought Alloys
Aluminum alloy castings are produced by one of
three basic methods:
(1) sand mold,
(2) permanent mold, or
(3) die cast.
In ________, it must be remembered that in
most cases different types of alloys must be used
for different types of castings
casting aluminum
require different
types of alloys than those used in permanent
molds.
Sand casting or sand die castings
are used to obtain higher
mechanical properties, better surfaces, or more
accurate dimensions.
Permanent mold castings
two specific types of permanent mold
castings:
(1) permanent metal mold with metal cores, and
(2) semi-permanent types containing sand cores.