Effect of Impact Toughness of B,Al,Ti Content in Mid-carbon Low Alloying B Cast Steel
Research the effect on impact toughness of boron content in mid-carbon low alloying boron cast steel, and investigate the interaction of boron,aluminium,titanium and its effect on impact toughness. The results indicate that boron can increase the impact toughness obviously, the effect of aluminium and titanium is not obviously, however aluminium can effect the rccovery efficiency of boron in a certain extent, this produces indirect effect on the impact toughness. The optimal content is B 0.0021～0.0038%,Al 0.02～(0.04%,)and (Ti 0.012)～0.025%?