摘要：The paper is concerned with material characteristics of plastic deformation,relating to the occurrence and development of plastic deformation,proof stress and strain hardening exponent with changing testing temperature,in high-strength low-alloy steels. The material characteristics of plastic deformation were measured experimentally by means of a tensile test in the temperature range from –80 °C to +100 °C;subsequently,a fractographic analysis of fracture surfaces was carried out in order to evaluate failure mechanisms of the steels studied.
