Important to prevent failures. Used in
design, materials selection, processing,
Success in manufacturing
Non-destructive testing: coupl
Materials Science and Engineering
Basic knowledge of materials
Applied knowledge of materials which can be
converted into products.
Materials Science and Engineering:
Residual Stresses and Stress
Relief Heat Treatment
ORIGIN OF RESIDUAL STRESS
The origin of residual stress is wide and varied. It
can be divided into three categories mechanical,
thermal and metallurgical.
These different factors often combine to produce
Heat Treatments of Metals
Strength can be increased by Preventing
Slip Impeded by Lattice
Line type: another
Crystal grain boundary
Where can Cavitation Arise?
When does Water Vaporate?
Consequences of cavitation
Reduction of efficiency of the fluid flow
Noise and vibration
Cavitation of a Ni alloy pump impeller
The effects of the alloying elements
Carbon (C): decreases the ductility, formability, weldability increases the
strength and hardenability.
The effects of the alloying elements on the
properties of steels
High specific modulus (ratio of modulus to density) and
high specific strength, (ratio of strength to density)
High electrical and thermal conductivity (in annealed