High-strength microalloyed steels are widely used in various branches of technology and industry due to the simultaneous combination high indicators strength, ductility, fatigue, corrosion resistance, other service properties. This is achieved reasonable choice optimal chemical composition parameters temperature-deformation treatment steel that provide a synergistic effect on dispersed microstr...

In this paper, the fatigue behavior of titanium microalloyed beam steels were studied by high cycle test and crack growth rate test. The effect Mg addition on in steel was systematically analyzed. According to experimental results, magnesium can effectively modify inclusions reducing size Al2O3 TiN promoting formation finer complex with a MgO·Al2O3 core high-strength steel. number had far less ...