Creep and its effects on a material

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SUMMARY

Creep in materials occurs when stress levels below the yield point induce deformation over time, primarily influenced by temperature. At elevated temperatures, reduced intermolecular attraction allows even low stress to cause deformation. Conversely, at lower temperatures, the mechanisms of creep, such as diffusional processes and dislocation glide, dictate that deformation can still occur under certain conditions, despite stress being below the yield point. For comprehensive insights, refer to the TLP on creep mechanisms.

PREREQUISITES
  • Understanding of material science principles
  • Familiarity with stress-strain relationships
  • Knowledge of temperature effects on material properties
  • Awareness of dislocation theory in materials
NEXT STEPS
  • Research the mechanisms of creep in materials using the TLP provided
  • Explore the role of temperature in material deformation
  • Study diffusional processes and their impact on creep
  • Investigate dislocation glide and its significance in material science
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Material scientists, mechanical engineers, and researchers focused on understanding material deformation under stress and temperature variations.

Aurelius120
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TL;DR
So I learnt that even at low temperatures materials subject to long periods of low stress would still break
What I do not get is why should a stress much lower than yield point cause deformation in a material?
If temperature is high intermolecular attraction is reduced and thus even low stress can deform things.

But if it is low
Then a force lower than yield point should be less than intermolecular attraction and should not deform it irrespective of time

Right?

Thank you
 
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