Isochronal annealing is a methodical heat treatment process that involves heating a metal in intervals or stages in which the metal is held at each stage for a constant period while being heated at a slow alertness until the temperature is increased in a progressive manner. Where the objective is to relieve internal stresses, limit dislocations and understand the metal properties at various stages of temperature increases.

Key Features:

• Gradual Temperature Increase: The sample is exposed to higher heat/higher temperatures by placing the sample in the furnace at different points, allowing the time to be uniform in intervals that are also stage-stable.
• Stress relief and microstructure recovery: The purpose of isochronal is to relieve internal stresses, lower crystal constraints, and improve ductility and stabilization.
• Used for materials research: Uniform softening of materials, isochronal annealing is usually part of laboratory-level studies with metals to analyze thermal behaviors, recrystallization, varied heat treatments and phase changes of materials.

Isochronal assessment can be useful, it is in the metallurgical studies of cold-worked metals and alloys, while isochronal distinguishes from isothermal annealing as a performance that is beneficial in revealing how the properties of materials change with point heating or chemical composition and has been useful for engineering purposes to reach improved mechanical performance or to gain some understanding of thermal stability of material, to manipulate structures or mechanics like aluminum, copper, titanium and some alloys.