Thermomechanical process

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Thermomechanical processes (also known as thermomechanical treatment or TMB ) are processes in which certain properties of a material (usually strength and toughness ) are improved through the combination of thermal effects and plastic deformation . There are various processes that contain a thermal treatment and then a deformation , a distinction being made between deformations at high and low temperatures . There are also processes in which reshaping is first carried out at a certain temperature, followed by further thermal treatment. Micro-alloying elements are often added to thermomechanically treated steels. These should during the hot forming as carbides and nitrides retire to the recrystallization inhibiting. This leads to better mechanical properties by means of grain refinement . The tendency of titanium to form nitrides that are stable at high temperatures is also used to prevent grain growth during austenitization annealing . Finally, the precipitates formed later during cooling also contribute to particle hardening .

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