Ductility of metals Archive

Fundamentals of deformation

This article provides answers to the following questions, among others:

What is the difference between elastic and plastic deformation?
What is the atomic process of deformation?
In which cases must springback be considered during the deformation process?
What is meant by a slip system?
What is the relationship between slip plane, slip direction and slip system?
What is the difference between a normal stress and a shear stress?
Why are only shear stresses responsible for the deformation process at the atomic level?
What is meant by critical resolved shear stress?

This article provides answers to the following questions, among others:

What is a lattice plane?
What is meant by a slip system?
Why should well-deformable lattice structures have as many slip systems as possible?
In what capacity do wrought metals differ from cast metals?
How many slip systems does the body-centered cubic lattice have?
Why is the face-centered cubic lattice more malleable than the body-centered cubic lattice, even though they both have the same number of slip systems?
How many slip planes does the hexagonal closest packed lattice have?
What is meant by polymorphism or allotropy?

This article provides answers to the following questions, among others:

What influence do dislocations have on the ductility of metals?
What does the Peierls stress describe?
What is meant by strengthening?
How is an increase in strength achieved in solid solution strengthening?
How do you achieve an increase in strength during precipitation strengthening?
Why do you achieve an increase in strength through grain-boundary strengthening?
What happens at an atomic level in case of strain hardening?

This article provides answers to the following questions, among others:

What is the mathematical relation between an external applied normal stress and the resulting shear stress in the slip system?
What statement makes the Schmid factor?
What is meant by a critical resolved shear stress (CRSS)?
At which angle is the shear stress in a slip system maximum?
Why do single crystals have slip steps at an angle of 45°?

This article provides answers to the following questions, among others:

Why are slip steps preferably characterized by a single crystal at an angle of 45° to the tensile axis?
What is meant by multiple gliding?
Under what condition does easy gliding occur?
Why are there usually no slip steps on a polycrystal visible?

This article provides answers to the following questions, among others: