Page 174 - Manufacturing Engineering and Technology - Kalpakjian, Serope : Schmid, Steven R.

Section 6.2 Aluminum and Aluminum Alloys

Low-pressure compressor High-pressure
Fan T' alloy Ti or AI alloy turbine LOW_preSSure
N' all0Y turbine
N' II
Hig|q_p|'9SSU|re COlT1lf)US1lOl1 3 Oy
compressor Chamber
Ti or Ni alloy Ni all0Y

Turbine Turbine
blades exhaust case
Ni alloy Ni alloy
Accessory section
Al alloy or Fe alloy
Inlet case
AI alloy

FIGURE 6.I Cross section of a jet engine (PW/2037), showing various components and the
alloys used in manufacturing them. Source: Courtesy of United Aircraft Pratt SC Whitney.

TABLE 6.3
Properties of Selected Aluminum Alloys at Room Temperature
Elongation
Ultimate tensile Yield strength in 5 0 mm
Alloy (UNS) Temper strength (MPa) (MPa) (%)
1100 (A91100) O 90 35 35-45
1100 H14 125 120 9-20
2024 (A92024) O 190 75 20-22
2024 T4 470 325 19-20
3003 (A93003) O 110 40 30-40
3003 H14 150 145 8-16
5052 (A95052) O 190 90 25-30
5052 H34 260 215 10-14
6061 (A96061) O 125 55 25-30
6061 T6 310 275 12-17
7075 (A97075) O 230 105 16-17
7075 T6 570 500 11

Phantom coupe are made of aluminum, improving the car’s strength-to-Weight and
torsional rigidity-to-Weight ratios.
Aluminum alloys are available as mill products-that is, as Wrought products
made into various shapes by rolling, extrusion, drawing, and forging (Chapters 13
through 15). Aluminum ingots are available for casting, as is aluminum in powder
form for powder-metallurgy applications (Chapter 17). Most aluminum alloys can
be machined, formed, and welded with relative ease.