There are metals that fall under the classification of precipitation hardening. When quenching is performed upon some precipitation hardening-alloy, alloying elements of this alloy are trapped within solution, which results in soft metal. Performing aging for a solutionized-metal allow alloying elements for diffusing via microstructure & forming inter-metallic particles. Such particles nucleate & fall-out of […]

Proper treatment of heat requires precise-control over temperature, cooling rate and time at a particular temperature. Normally, heat treating process starts from heating alloys beyond upper transformation temperature. The exception to this is tempering, aging and stress relieving. This upper transformation temperature is known as “arrest” because at upper transformation temperature nothing noticeable happens. So, […]

Heat treatment physical process provides an effective approach to the properties of metal by controlling the rate of dissemination and the rate of cooling inside the micro-structure after the metal is heated. Metallic materials comprise of a microstructure of little precious crystals called “grains” or sometimes crystallites. The nature of the grains is also the […]