Term
What are some of the general properties that distinguish metals from ceramics and polymers?
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Definition
| Typical metallic properties include: High strength and stiffness, good electrical and thermal conductivity, and higher density than ceramics or polymers |
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Term
| What are two major groups or metals? Define them. |
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Definition
| Ferrous metals, which are based on iron, and nonferrous, which include all others. |
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Term
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Definition
| An alloy is a metal comprised of two or more elements, at least one of which is metallic. |
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Term
| What is solid solution in the context of alloys? |
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Definition
| A solid solution is an alloy in which one of the metallic elements is dissolved in another to form a single phase. |
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Term
| Distinuish between a substutional solid solution and an interstitial solid solution |
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Definition
| A substitutional solid solution is where the atoms of the dissolved element replace atoms of the solution elements in the lattice structure of the metal. An interstitial solid solution is where the dissolved atoms are small and fit into the vacant spaces (the interstices) in the lattice structure of the solvent metal. |
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Term
| What is an intermediate phase in the context of alloys? |
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Definition
| An intermediate phase is an alloy formed when the solubility limit of the base metal in the mixture is exceeded and a new phase, such as a metallic compound or intermetallic compound is formed |
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Term
| The copper-nickel system is a simple alloy system, as indicated by its phase diagram. Why is it so simple? |
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Definition
| The Cu-Ni alloy system is simple beacause it is a solid solution alloy throughout its entire composition range |
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Term
| What is the range of carbon percentages which defines an iron-carbon alloy as a steel? |
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Definition
| The carbon content ranges from 0.02% to 2.11% |
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Term
| What is the range of carbon percentages which defines an iron-carbon alloy as cast iron? |
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Definition
| The carbon content ranges from 2.11% to 5% |
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Term
| What is the predominant alloying element in all stainless steels? |
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Definition
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