(See related pages)
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| Recovery | the first stage in the removal of the effects of cold working when a cold-worked
metal is slowly heated with increasing temperature. During recovery, internal
stresses are relieved and some dislocation rearrangement into lower-energy configura-tions
takes place. Some dislocations are annihilated. (See page(s) 274, Sec. 6.1) |
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| Recrystallization | the process whereby a cold-worked metal is heated to a sufficiently
high temperature for a long enough time to form a new strain-free grain structure.
During recrystallization the dislocation density of the metal is greatly reduced. (See page(s) 274, Sec. 6.1) |
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| Ductile fracture | a mode of fracture characterized by slow crack propagation. Ductile
fracture surfaces of metals are usually dull with a fibrous appearance. (See page(s) 274, Sec. 6.2) |
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| Brittle fracture | a mode of fracture characterized by rapid crack propagation. Brittle
fracture surfaces of metals are usually shiny and have a granular appearance. (See page(s) 274, Sec. 6.2) |
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| Fatigue | the phenomenon leading to fracture under repeated stresses having a maximum
value less than the ultimate strength of the material. (See page(s) 274, Sec. 6.3) |
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| Fatigue failure | failure that occurs when a specimen undergoing fatigue fractures into
two parts or otherwise has been significantly reduced in stiffness. (See page(s) 274, Sec. 6.3) |
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| Fatigue life | the number of cycles of stress or strain of a specific character that a sample
sustains before failure. (See page(s) 274, Sec. 6.3) |
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| Fatigue crack growth rate da/dN | The rate of crack growth extension caused by
constant-amplitude fatigue loading. (See page(s) 274, Sec. 6.4) |
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| Creep | time-dependent deformation of a material when subjected to a constant load or
stress. (See page(s) 274, Sec. 6.5) |
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| Creep rate | the slope of the creep-time curve at a given time. (See page(s) 274, Sec. 6.5) |
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| Creep (stress)-rupture strength | the stress that will cause fracture in a creep (stress-rupture)
test at a given time and in a specific environment at a particular temperature. (See page(s) 274, Sec. 6.5) |