Material Science

What parameter is defined as the temperature at which the toughness of the material drops below some predetermined value, usually 15 ft-lb?What parameter is defined as the temperature at which the toughness of the material drops below some predetermined value, usually 15 ft-lb?

What field of study encompasses the procurement and production of metals?

What type of bond in metallic compounds will enable them to possess electrical conductivity property?

What is the maximum stress below which a material can theoretically endure an infinite number of stress cycles?

What materials have permeabilities slighter greater than that of free space?

What refers to the weak form of induced or nonpermanent magnetism for which the magnetic susceptibility is negative?

What mechanical property of a material refers to the nominal stress at fracture in a tension test at constant load and constant temperature?

What physical property of a material refers to the temperature at which a polymer under a specified load shows a specified amount of deflection?

Which one below is a characteristic of breaking of brittle materials?

What is the ratio of stress to strain in a material loaded within its elastic range?

What material is used for electroluminescent diodes which can emit either green or red light?

What materials have permeability slightly less than that of free space?

What materials have very high permeabilities?

What is the main purpose of case hardening?

What is added to nickel to improve its ductility?

Which material is used for Schottky barrier diodes, light-emitting diodes, Gunn diodes and injection lasers?

What is caused by the local melting of a constituent or an impurity in the grain or randomly oriented metal crystals boundary at a temperature below the melting point of the metal itself?

The term “bronze” is used to designate any alloy containing:

Heat distortion is ______ property of plastics

The term “brass” is very commonly used to designate any alloy primarily of:

What gives the average ratio of stress to strain for materials operating in the nonlinear region in the stress-strain diagram?

What refers to a relatively weak form of magnetism that results from the independent alignment of atomic dipoles with an applied magnetic field?

What is the resistance of a material to plastic deformation?

What combination of elements has high electrical resistance, high corrosion resistance, and high strength at red heat temperatures, making it useful in resistance heating?