Since there are materials having high yield strength and good mechanical properties but due to less ductility their usage is limited to only very few applications.
Yes you may use any higher ductile materia in form of alloyl to enhance ductility
In general, ductility decreases with an increase in strength. But it can be improved with a decrease in Carbon and through grain refinement.
However, reduction in grain size below a critical value could hamper the ductility owing to its inability to contain the dislocations.
yes of course.Titanium alloys can be added to enhance ductility of material as they are highly ductile and easily forged and machined,extremely strong.These alloys have only limitation of chemical reactivity with other material at elevated temperatures
Swathi you should actually rephrase your question.
Can ductility of a material be increased by adding some elements in what type of material?
You need to understand the type of material where you need the ductility. The answer will depend upon the type of material you are planning. For example if we are thinking of steels (ferrous alloys), then reducing carbon content increases as suggested by Vinod. However if it is some other materials, then we have to look at them individually.
Cobalt and magnesium when added to aluminum alloys they increase strength without unduly reducing ductility. For example it is possible to have high ductility and strength in some nanostructured aluminum alloys. See
http://www.lanl.gov/spd/Paper/AdvMater-Al.pdf
Dear Swathi alloys are almost stronger than pure metals so pure metals are more ductile than alloys.
Reduce the Carbon content and refine the grains. This leads to improved ductility.
