1 results listed
Reviewed the possibility of high strength construction
steel fatigue evaluation based on analysis of dislocation steel
martensite structure tempering after quenching in water and
tempering at 650 0С (1 hour). The degree of influence of the
dislocation mechanism of destruction depending on the number
of test cycles, expressed in terms of the sensitivity of cyclic stress
to the fractal dimension of dislocations, is established.
Experimentally established, that sensitivity of dislocation to
fractal dimension is decreases with increasing number of test
cycles, leading to an increase in the number of dislocations to a
critical value after which the sample is destroyed. A model of
predicting steel fatigue indices 14Х2ГМР was obtained, which
allows the use of the fractal approach in assessing the fatigue of
high-strength steels with a higher dislocation density.
International Iron & Steel Symposium
UDCS
V. I. Bolshakov
V. M. Volchuk
O. F. Parhomenko