INFLUENCE OF HEAT TREATMENT ON THE PHYSICOMECHANI-CAL PROPERTIES OF STEELS OF THE AUSTENITE-MARTENSITE CLASS

摘要

The temperature curve of internal friction Q (T) was investigated using the torsion pendulum [2] on specimens 1 mm in diameter and 100 mm long. The specimen was heated in the relaxer [2] to 700-1200°C and the Q (T) curve was recorded after 20 minutes of holding, during a cooling process with a rate of about 10 deg/min. When it was necessary to nor?malize the specimens, the Q (T) curve was also recorded in direct heat?ing.