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    Home > What is precipitation hardening?

    What is precipitation hardening?

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Precipitation hardening, also known as age hardening, is a technology of heating and strengthening plastic materials (such as alloys) This technique stops the displacement in the lattice structure by producing solid impurities called precipitates Displacement is the main reason for the plasticity of materials, so there is no displacement energy to enhance the bending force of materials Alloys are usually aluminum, magnesium, nickel, and titanium The formation of precipitation hardening material starts from heating the material to a very high temperature to dissolve the precipitate It usually takes 1-20 hours for the sediment to dissolve completely The new mixture becomes supersaturated and ready for further processing Solution supersaturation can be obtained by quenching Quenching can be done in water, air, or a mixture of air and water As an important step of solution strengthening, it softens the material and prepares for the next stage of precipitation hardening After the initial and quenching stages, the solution is aged Artificial aging occurs by heating the solution above room temperature and allowing it to soak for 2-20 hours The aging temperature and soaking time are determined by the final desired product strength Care should be taken to control the temperature and time, as too high a temperature and too long a soak will result in a reduction of the precipitate and, as a result, a reduction in strength and an increase in ductility Natural aging is another option If you decide to use this method, you should know that the natural aging scheme takes longer than the above method, and it will take days to weeks Impurities produced by precipitation hardening process will destroy the lattice structure of stainless steel, aluminum and other alloys They restrain the displacement of these structures and make the particles not easy to loosen The key to increase the ductility of the alloy is to restrain these failures The alloy produced by precipitation hardening has many practical applications in the manufacturing industry They are usually used to produce components that must withstand high temperatures, such as pressure vessels or turbochargers Many alloys have important applications in industry Silicon, for example, is used to make semiconductor materials; copper is used for everything from shipbuilding to roofing materials.
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