Question
Download Solution PDFWhich of the following alloys of iron and carbon has the highest yield strength?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
- Generally speaking, as the carbon content in steel increases, both the yield strength and the hardness of the material increase. This is because the carbon atoms fit into the interstitial (spaces between atoms) of the iron matrix, which impedes the movement of dislocations -- defects in the atomic structure that are a primary mechanism of deformation in metals. The more carbon present, the more difficult it is for the material to deform, translating into an increase in yield strength.
- As the carbon content increases, strength, and brittleness of steel increases while ductility and toughness decreases.
- Higher the carbon content, higher will be yield strength.
- Carbon content in the following steel are as :
- Cast Iron: 2%-4%
- Wrought iron: 0.15%
- High carbon steel : 0.6% to 2.0%
- Medium carbon steel: 0.30% to 0.6%
- Mild steel: 0.16% to 0.29%
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