Effect of Mo Addition on the Precipitation Behavior of Carbide in Nb-Bearing HSLA Steel
Conference paper
Abstract
The effect of Mo addition on the precipitation of carbides both in austenite and ferrite of Nb-bearing HSLA steel were investigated by stress relaxation and transmission electron microscopy (TEM). Experimental results showed that the addition of ~0.2 wt.% Mo into Nb-bearing steel slightly accelerated the precipitation kinetics of Nb carbides both in austenite and ferrite. The particles, (Nb, Mo)C, precipitated in Nb-Mo-bearing steel exhibit superior coarsening resistance compared to that of NbC particles in Nb-bearing steel. And the difference of carbides precipitated in anstenite and ferrite of Nb-Mo-bearing steel was discussed.
Keywords
Molybdenum NbC Precipitation Austenite Ferrite Interfacial energyPreview
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