(1)Incomplete Annealing, also known as incomplete crystalline annealing, involves heating steel to a temperature between Ac1 and Ac3 or Ac1 and Acm, then holding it at that temperature and cooling it slowly to allow for incomplete recrystallization of the steel's structure.
(2) Partial annealing involves heating the workpiece to a semi-austenitic state before annealing, whereas full annealing requires heating the workpiece to complete austenitization for the annealing process.
(3) Austempering is typically used for hypoeutectoid steel, as well as hypereutectoid steel, while full annealing is generally used only for hypoeutectoid steel.
(4) Full annealing typically results in lamellar pearlite, whereas incomplete annealing yields spheroidal pearlite.
