P
Particle boundary
Refers to the boundary along the particles within the structure.
Particle growth inhibitor
Prevents or limits the grain growth in the sintering operation.
Plasma electro-discharge
A process that uses electricity to break down the charged particles.
Plastic deformation
Plastic deformation is a term used to describe the deformation that remains permanent after release of the stress exerted on it.
R
Re-crystallization temperature
When in the solid state a temperature at which recrystallization takes place.
Residual stress
When a body is not exerted to any outside force, the residual stress refers to the internal stresses that remain inside a material after it has been formed.
Positioning accuracy
A term that refers to the accuracy of the position of the cutting edge when changed.
Post preocessor
A device to convert data into a readable format for CNC machines.
ppm order
Parts per million.
Precipitation
A chemical process in which a solid substance is separated from a solution.
Retained austenite
Generally at ambient temperatures austenite is not found. However under certain cooling conditions, austenite can be retained in the grain structure.
Rib
A thin sectioned wall to support a mould.