Ductile to Brittle Transition 

holey this guy took the effort to draw everything for us. really appreciate his kind work

Titanic mainly failed because of low temperature. A ductile material will start behaving as a brittle material if we keep at the low temperature. The steel which was used in titanic wasn't tested for this which led to the distruction. Proper heat treatment and using better alloying material would have saved the ship !

Very Good explanation.thank you sir

Very good explanation

Sir, can I apply this method to bolt forging (cold forging) analysis? specially for dies and punch for bolt production

Thank you 💪🏾✌🏾

How do you calculate ultimate tensile strength from yield strength?

How is it that you know every answer to my questions. Thank you sense

thank you sir , super

Dear sir, why is it that FCC metals don't show DBTT but BCC show them?

Hocam yazıyorsunuz bu işi. I mean you are doing it. Love from Turkey.

Sir, what is mechanism by which at low temperature brittle transition happens? Anything related to bond strength? or something else

Best video

why there is sharp DBT temperature for very low carbon steels in comparison to high carbon steels?

Below -101degC, even 304SS are impact tested to ensure that material has enough ductility to be used for fabrication.

sir i think for FCC materials, yield stress curve should be below fracture stress

As grains become finer, more grain boundaries will be there, more grain boundaries means more hinderance for the dislocations to move and that means less plastic deformations. So how fine grains will contribute toward ductility?

Why the FCC crystals are not much sensitive to temperature ? Where as BCC crystals will ?

Thank you Sir...

Dear Sir, can you explain the same behavior for the polymers.