Authors: S K Ghosh A Haldar P P Chattopadhyay
Publish Date: 2009/01/01
Volume: 44, Issue: 2, Pages: 580-590
Abstract
The present study concerns the influence of Cu addition on the microstructural evolution and mechanical properties of directly aircooled microalloyed thingauge steel For this purpose 15 wt Cu was added to a Ti–B microalloyed steel It is known that Ni addition to Cucontaining steel is beneficial to eliminate hot shortness caused by Cu Therefore the effect of Ni addition half that of Cu in wt on the microstructure formation and mechanical properties has also been studied Microstructures and mechanical properties of the directly aircooled steels have demonstrated that addition of 15 wt Cu along with 08 wt Ni in Ti–B microalloyed steel results in a dual phaselike microstructure which yielded attractive tensile strength 746 MPa and ductility 31 However Cu addition deteriorated the impact toughness of the directly aircooled Ti–B microalloyed steels
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