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Questions and Answers
In engineering work, why are alloys generally preferred over pure metals?
In engineering work, why are alloys generally preferred over pure metals?
- Alloys are cheaper than pure metals
- Alloys have a higher melting point than pure metals
- Alloys are easier to manufacture than pure metals
- Alloys have superior properties compared to pure metals (correct)
What type of alloying involves the alloy elements located in spaces between atoms in the unit cell?
What type of alloying involves the alloy elements located in spaces between atoms in the unit cell?
- Substitutional alloying
- Interstitial alloying (correct)
- Phase alloying
- Interstitial-substitutional alloying
Why are ordinary steels, which are alloys of iron and carbon, preferred to pure iron?
Why are ordinary steels, which are alloys of iron and carbon, preferred to pure iron?
- Due to their resistance to corrosion compared to pure iron
- Due to their lower cost compared to pure iron
- Due to their strength and other superior properties (correct)
- Due to their higher electrical conductivity than pure iron
What do important mechanical properties of alloys relate to?
What do important mechanical properties of alloys relate to?
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Flashcards
Why are alloys preferred?
Why are alloys preferred?
Alloys typically exhibit enhanced strength, hardness, corrosion resistance, and other desirable characteristics compared to pure metals, making them more suitable for engineering applications.
Interstitial Alloying
Interstitial Alloying
Interstitial alloying occurs when smaller atoms fit into the spaces between larger atoms in the crystal lattice (unit cell) of the base metal.
Why is steel preferred to iron?
Why is steel preferred to iron?
Ordinary steels (iron-carbon alloys) possess greater strength, hardness, and wear resistance than pure iron, making them ideal for structural and mechanical components.
Alloy Mechanical Properties
Alloy Mechanical Properties
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Eutectoid Point
Eutectoid Point
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Study Notes
Alloys in Engineering
- Alloys are generally preferred over pure metals in engineering work due to their enhanced properties.
Types of Alloying
- Interstitial alloying involves the alloy elements located in spaces between atoms in the unit cell.
Steels in Engineering
- Ordinary steels, which are alloys of iron and carbon, are preferred to pure iron due to their improved properties.
Mechanical Properties of Alloys
- Important mechanical properties of alloys relate to strength, toughness, ductility, and resistance to corrosion and wear.
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