EFFECT OF THE HEAT-TREATMENT REGIME AND CARBON CONTENT ON THE DAMPINGPROPERTIES OF STEEL 01KH6F2

The high damping properties of ferrite chromium steels caused by magne toelastic hysteresis depend substantially on the defects of the crysta l structure. For this reason the regimes of mechanical and heat treatm ent can change their damping level by more than a factor of 10. Elimin ation of thermal stresses and deformations in parts, prevention of for mation of carbides, intermetallic compounds, ar chemical inhomogeneiti es in the structure of steels, and the reduction of the specific surfa ce of the boundaries are known, but still insufficiently studied, ways of attaining a highly damped state in steels and alloys. The present work concerns the effect of the mentioned Factors and same others on t he damping properties of a ferrite steel of grade 01Kh6F2. Another obj ect of study is the effect of a variable magnetic field on the damping and the defect of the shear modulus. The results obtained are analyze d to interpret the regular features established.