Mechanical Behavior of metallic Materials TABLE 7.2 Notch Strengthening in 1018 Steel Yield Strength Reduction of Area Notched Bar in Notched Sample Smooth Bar 0 1.00 20 1.22 30 1.36 40 1.45 50 1.64 60 1.85 70 2.00
Mechanical Behavior of Metallic Materials
Mechanical Behavior of metallic Materials 400 UTS of steel-395 MPa (57 ksi) 60 ◆◆ t=1. 0 mm t=0.46mm t=0.14mm t=0.066mm t=0.018m 40 as ◆ 200 30 UTS of silver-145 MPa(21 ksi) 100 0 0.05 0.10 0.15 0.20 0.25 0.30 t/D FIGURE 7.8 Brazed joint strength as a function of joint geometry. "(Reprinted w CHONGOING UNIVENTTY
Mechanical Behavior of Metallic Materials
Mecl l Behavior of metallic materials External Variables Affecting fracture Notch severity e↑ Any metallurgical strengthening mechanisms designed increase yield strength will simultaneously suppress plastic deformation capacity and the ability of the material to blunt the crack tip
Mechanical Behavior of Metallic Materials External Variables Affecting Fracture Any metallurgical strengthening mechanisms designed increase yield strength will simultaneously suppress plastic deformation capacity and the ability of the material to blunt the crack tip
Mechanical Behavior of metallic Materials energ od& volume The energy absorbed before and during the fracture process is high, the material is said to be tough or possess high fracture toughness. If the crack-tip plastic zone is small, the material is classified as“ brittle” CHONGQING UNIVENTTY
Mechanical Behavior of Metallic Materials 0 energy f d volume = The energy absorbed before and during the fracture process is high, the material is said to be tough or possess high fracture toughness. If the crack-tip plastic zone is small, the material is classified as “brittle
Mechanical Behavior of metallic Materials Brittle Tough MenY
Mechanical Behavior of Metallic Materials