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When the temperature of a solid metal increases,
[ME 2005]
- a)strength of the metal decreases but ductility increases
- b)both strength and ductility of the metal decreases
- c)both strength and ductility of the metal increases
- d)strength of the metal increases but ductility decreases
Correct answer is option 'A'. Can you explain this answer?
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When the temperature of a solid metal increases,[ME 2005]a)strength of...
Strength decreases as dislocation movement becomes easier.
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When the temperature of a solid metal increases,[ME 2005]a)strength of...
Effect of Temperature on Metal Properties:
Metal properties can be significantly influenced by changes in temperature. When the temperature of a solid metal increases, certain characteristics such as strength and ductility can be affected.
Strength of the Metal:
- The strength of a metal is typically reduced as the temperature increases. This is due to the increased atomic vibrations within the metal lattice, which disrupt the orderly arrangement of atoms and make it easier for dislocations to move through the material.
- As a result, the metal becomes more susceptible to deformation and fracture at higher temperatures.
Ductility of the Metal:
- On the other hand, ductility, which is the ability of a material to deform plastically without fracturing, tends to increase with temperature.
- This is because the higher temperature allows for greater atomic mobility, enabling atoms to rearrange themselves more easily in response to an applied stress.
- As a result, the metal becomes more malleable and less prone to brittle failure at elevated temperatures.
Conclusion:
- Therefore, when the temperature of a solid metal increases, the strength of the metal decreases due to increased atomic vibrations, while the ductility of the metal increases as a result of greater atomic mobility.
Metal properties can be significantly influenced by changes in temperature. When the temperature of a solid metal increases, certain characteristics such as strength and ductility can be affected.
Strength of the Metal:
- The strength of a metal is typically reduced as the temperature increases. This is due to the increased atomic vibrations within the metal lattice, which disrupt the orderly arrangement of atoms and make it easier for dislocations to move through the material.
- As a result, the metal becomes more susceptible to deformation and fracture at higher temperatures.
Ductility of the Metal:
- On the other hand, ductility, which is the ability of a material to deform plastically without fracturing, tends to increase with temperature.
- This is because the higher temperature allows for greater atomic mobility, enabling atoms to rearrange themselves more easily in response to an applied stress.
- As a result, the metal becomes more malleable and less prone to brittle failure at elevated temperatures.
Conclusion:
- Therefore, when the temperature of a solid metal increases, the strength of the metal decreases due to increased atomic vibrations, while the ductility of the metal increases as a result of greater atomic mobility.
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When the temperature of a solid metal increases,[ME 2005]a)strength of the metal decreases but ductility increasesb)both strength and ductility of the metal decreasesc)both strength and ductility of the metal increasesd)strength of the metal increases but ductility decreasesCorrect answer is option 'A'. Can you explain this answer?
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