HIGHER STEEL HARDNESS AND RESISTANCE TO STABILITY LOSS

摘要

FIELD: process engineering.SUBSTANCE: invention relates to research of metal strength characteristics and can be used in calculation of structures and parts of machines. Proposed method consists in strain ageing of specimen, application of static stress with changing the stress sign and strain sign unless complete plastic yield in afterflow field and hardening region, heating and holding at preset temperature conditions. Plastic yield makes 1-2% while strain ageing consists of several cycles their number being defined by the termination of uniform straining over specimen length. Said specimen is subjected to compressive load.EFFECT: higher hardness and resistance to stability loss.