click below
click below
Normal Size Small Size show me how
FE Materials Science
material processing, properties, and attributes
Term | Definition |
---|---|
toughness | measure of a material's ability to yield and absorb highly localized and rapidly applied stress |
tough | a material that is ___ withstands occasional high stresses without fracturing |
Charpy test | measures toughness by applying sufficient impact to cause failure to a notched specimen |
creep | continuous yielding of a material under constant stress |
creep test | test where low tensile load of constant magnitude is applied to a specimen and the strain is measured as a function of time; measures creep |
Brinell Hardness Test | test to measure hardness of specimen; diameter of depression is correlated to hardness |
hardness | measure of a material's resistance to plastic deformation; capacity of a surface to resist deformation |
endurance/fatigue limit | stress level threshold at which a material will withstand an almost infinite number of loadings without experiencing failure |
fatigue failure | failure in which a material is stress-loaded repeatedly even without it ever exceeding the ultimate strength |
ductility | ability of a material to yield and deform prior to failure |
brittle | characteristic of a material that can only support small strains before failing catastrophically |
strong | characteristic of a material with a high ultimate strength |
weak | characteristic of a material with a low ultimate strength |
hard | characteristic of a material with a high modulus of elasticity |
soft | characteristic of a material with a low modulus of elasticity |
Gold | great reducing agent |
Potassium | great oxidizing agent |
hard working | forming process in which material's temperature is above its re-crystallization temperature |
cold working | forming process in which material's temperature is below its re-crystallization temperature |
quenching | forming process in which a formed part is submerged in a gas or liquid; prevents the material from forming undesirable characteristics often aiming for hard steel |
hard working | forming process in which internal defect and imperfections are eliminated; has a greater ductility; withstands large strains with out strain hardening |
cold working | forming process that promotes hardness and toughness; uniform microstructure |
annealing | forming step in which the temperature of the formed part is raised slightly about its recrystallization temperature to relieve stresses, increase grain size and recrystallize grains |