A comparative investigation was carried out of the routine mechanical properties,fracturetoughness,microstructure and hardness of slack-quenched rails containing different carboncontents.After the rails slack-quenched,their strength and toughness,together with ductility,are obviously improved,and the higher the quench hardening is,the more the resistance towear and shell will be.Discussion was also made of the reason for this improvement and of theeffect of carbon content and quench hardening on the properties of rails in combination withthe rail-laying trial.
展开▼
