B Creep and its effects on a material

[Aurelius120]

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

 

[ergospherical]

Creep may arise due to diffusional processes or due to dislocation glide. Read this TLP for technical details pertaining to each mechanism and the conditions under which each is dominant.
https://www.doitpoms.ac.uk/tlplib/creep/mechanisms.php