Special Issue "Effect of Annealing Temperature on Microstructure and Properties of Alloys"
Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 1781
Annealing is a heat treatment process involving heating the alloy and holding it at a certain temperature (annealing temperature), followed by controlled cooling. Annealing results in relief of internal stresses, softening, chemical homogenization, and transformation of the grain structure into a more stable state. It alters the microstructure of a material to change its mechanical, optical, and electrical properties. The annealing process improves the material structure and reduces microstructure defects. It also decreases hardness and improves the cutting machining properties of alloys. Diffusion annealing makes the composition of the alloy uniform and reduces the anisotropy of the alloy. With increasing annealing temperature, recovery and recrystallization mechanisms occur in deformed microstructures. The tensile strength and yield strength of the alloy decrease, while elongation increases. The annealing treatment results in static recrystallization, which increases fine equiaxed grains but decreases large elongated grains. In addition, the equiaxed grains formed during the annealing treatment demonstrate relative random orientations, which weaken the fiber texture of the alloy. The final grain size depends on the annealing temperature and annealing time. For a particular annealing temperature, as the time at the temperature increases, the grain size increases. For a particular annealing time, as the temperature increases, the grain size increases.
Dr. Ramakanta Naik
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