90
Chapter 2
40
O0
0.20
¯ Casting alloys
x Wrousht alloys
A~S/~S = 0.35
x
0.40
0.60
0.80
Tensile strength (1000 psi)
Figure 2.27 Rotating-bending strengths at 100 million cycles of magnesium alloys.
(After Grover, Gordon, and Jackson [2.15]. Courtesy of the Bureau of Naval
Weapons, U.S. Department of the Navy), [~,e t = ~rULT/20]
8O
× Copper and copper-base alloys
¯ Nickel-base alloys
×
x
J
x ~x,.....""; x x
x~
20
40
60
80
100 120
Tensile strength (1000 psi)
FS/~3 = 0.3,~
140
160
180
Figure 2.28 Rotating-bending fatigue strengths at 100 million cycles of some
nonferrous alloys. (After Grover, Gordon, and Jackson [2.15]. Courtesy of the
Bureau of Naval Weapons, U.S. Department of the Navy). [~ = crt~LT/50]
Bending
km= (~m, ~m) (0 .85, 0.01967)@10 ~° cycles fo r ge ar ma terials
(2.89)
1@107 cycles and ~m = 0
(2.90)
Chapter 2
40
O0
0.20
¯ Casting alloys
x Wrousht alloys
A~S/~S = 0.35
x
0.40
0.60
0.80
Tensile strength (1000 psi)
Figure 2.27 Rotating-bending strengths at 100 million cycles of magnesium alloys.
(After Grover, Gordon, and Jackson [2.15]. Courtesy of the Bureau of Naval
Weapons, U.S. Department of the Navy), [~,e t = ~rULT/20]
8O
× Copper and copper-base alloys
¯ Nickel-base alloys
×
x
J
x ~x,.....""; x x
x~
20
40
60
80
100 120
Tensile strength (1000 psi)
FS/~3 = 0.3,~
140
160
180
Figure 2.28 Rotating-bending fatigue strengths at 100 million cycles of some
nonferrous alloys. (After Grover, Gordon, and Jackson [2.15]. Courtesy of the
Bureau of Naval Weapons, U.S. Department of the Navy). [~ = crt~LT/50]
Bending
km= (~m, ~m) (0 .85, 0.01967)@10 ~° cycles fo r ge ar ma terials
(2.89)
1@107 cycles and ~m = 0
(2.90)