Фактические кривые упрочнения стали 20MnB4 и 30MnB4 для холодной высадки
The real stress – strain curves of steel 20MnB4 30MnB4 for cold heading
Аннотация
In the work the method of determination of stress strain curves on base the true axial compression test was presented. An instability of deformation process factors, like temperature or state of material deformation occurs often in real conditions of plastometric investigations. These factors hardly effect on strain-stress curves obtained directly from test. Using the parameters of plastic deformation acquired during test and using numerical data processing, it is possible to make the initial correction of determined stress strain curves. These tests were carried out with the GLEEBLE 3800 physical simulator of metallurgical processes. The specimens measuring 10x12 mm were deformed with the help of the anvils enabling obtaining of the axial state of deformation.
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