Mechanical properties of directly air cooled copper added microalloyed steels

Abstract

An attempt has been made to develop dual phase like microstructures in directly air cooled 1·5 wt-%Cu added Ti–B microalloyed steels. The chosen compositions have allowed to avoid pearlite formation during air cooling and yielded continuous work hardening behaviour with attractive combination of strength and ductility. Aging treatment has effectively improved the ductility without deterioration of strength. Differential Jaoult–Crussard analysis of the tensile results has explained contributions of the constituent phases in work hardening behaviour of the investigated steels.

Keywords:

• DUAL PHASE
• DIRECTLY AIR COOLED
• WORK HARDENING
• JAOULT-CRUSSARD ANALYSIS