Effect of Deformation Rate on the Strength and Deformability of Alloys at 4.2 K

The results of investigating the effect of deformation rate and loading conditions in the presence of a prestrain on the parameters of low-temperature intermittent yield and the mechanical properties of the steels 03Kh20N16AG6 and 12Kh18N10T and the titanium alloy 3M have been considered, taking into account the stepwise development of jumplike deformation. Kinetic criteria of the loss of plastic-deformation stability are given, and the fracture conditions during deformation jump and after its end have been formulated. The necessity of improving the standards for testing materials under deep chilling conditions has been shown.