Exam 26: Welding Metallurgy

When the surface of an object is a little above ____ Fahrenheit, the vibrating frequency of the atoms gives off visible light which we see as a dull red glow.

The phases and temperatures at which an alloy exists is summarized in a(n) ____.

What is the difference between crystalline and amorphic solids? Give examples of both.

Pure iron forms the body-centered cubic (BCC) crystal below a temperature of ____ Fahrenheit.

____ is the property that allows a metal to withstand forces, sudden shock, or bends without fracturing.

Explain the process of precipitation hardening.

While a metal is in the liquid-solid phase, it is ____.

​How is a metal's hardness reduced?

The basic unit of temperature is the ____.

Which of the following is true of martensite?

What is the difference between sensible and latent heat?

____________________ is the process of reheating a part that has been hardened through heating and quenched.

____ strength is a measure of how well a part can withstand forces acting to cut or slice it apart.

​What effect does forging have on a rolled steel's grain structure?

____________________ is the amount of thermal energy in matter.

____________________ is the ability of a metal to be permanently twisted, drawn out, bent, or changed in shape without cracking or breaking.

____ is defined as the maximum load, per unit of area, to which a material will respond with a deformation directly proportional to the load.

Iron is called an ____________________ metal, because it exists in two different crystal forms in the solid state.

____ strength is the property of a material to resist being crushed.

____ heat is absorbed by a material as it changes from a solid to a liquid state.