ENGINEERING.com has updated it's forum.  To post a question please visit the new Ask@ Forum.   

With a database of over 10000 questions the library will remain available for an extended period.

Q&A


rahul gopinath
What is strain hardening? View All


14 years ago - 11 months left to answer. - 2 responses - Report Abuse
Respond to question
    0      [lnkReport]        0       0       
Share |
  Responses


richie
Strain hardening is generally defined as heating at a relatively low temperature after cold-working. During strain hardening the strenth of the metal is increased and ductility decreased.

To go a step further in explaining, if a low-carbon steel is cold-worked, or strained passed the yield point, then aged for several days at room temperature, it will have a higher yield stress after the aging. This happens because during the aging carbon or nitrogen atoms diffuse to dislocations, reanchoring them.

Also, not everything can be strain aged, or recovered at low temperatures. The low carbon steel is just an example. Different materials will show different behaviors during recovery.


14 years ago

Source:


  0     1         

Jake Banman
Strain Hardening is when a metal is strained beyond the yield point. An increasing stress is required to produce additional plastic deformation and the metal apparently becomes stronger and more difficult to deform.

Strain hardening is closely related to fatigue. Example, bending the thin steel rod becomes more difficult the farther the rod is bent. This is the result of work or strain hardening. Strain hardening reduces ductility, which increases the chances of brittle failure.



14 years ago

Source: Strength Of Materials class (Civil Technology Yr 1)


  1     0         

ENGINEERING.com does not provide engineering advice. The Ask@ service is a forum for members to exchange ideas relating to the world of engineering. We caution users not to accept any responses that they receive without further validation, and not to rely on any engineering advice that they may get from other members of the Ask@ forum. ENGINEERING.com specifically disclaims any obligation to validate or verify any information posted within the Ask@ service. ENGINEERING.com encourages users to seek the services of a professional engineer for any engineering advice they may require.