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15 Cards in this Set
- Front
- Back
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The process of reheating a hardened material in order to reduce brittleness and increase ductility and toughness is called |
tempering |
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Matter is defined as anything that has mass and occupies space such as a gas, liquid, or solid. |
True |
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A ferrous metal containing 0.40% of carbon is classifies as a |
medium carbon steel |
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Controlled heating and cooling of metals to acquire desired characteristics is called |
heat treatment |
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Slowly cooling a material, particularly metal, after heating to a prescribed temperature in order to soften is |
annealing |
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Steels cannot be hardened unless they have a minimum, 0.50% (50 points) of carbon. |
True |
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A materials ability to be plastically deformed without fracture and failure is said to have good |
ductillity |
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The two types of crystalline structures of metals are body centered cubic and face centered cubic |
False |
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A structure of matter that has no definite shape but definite volume is a |
liquid |
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Atoms that arrange in an orderly geometric pattern s called the geometric stack structure |
False |
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A metal, whose base element is iron, is grouped as a ferrous metal. |
True |
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The point where a material will continue elongating without an increase in force applied and the stress level at which permanent deformation results is called the |
yield strength poin |
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The resistance to deformation and forced penetration is a materials |
hardness |
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A slow deformation of a material under prolonged stress over time is called creep |
True |
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The law that states the extension of a spring is in direct proportion with the load added as long as the load does not exceed the elastic limit is |
Hooke's |
