Effects of Amorphous and Nanocrystalline Inoculants on the Micro-Structure and Mechanical Behavior of Fe-Si-Mn Steels

Abstract

In order to increase the modifying effect, the Fe-V-Nb alloy was rapidly solidified with melt-spin method, and the nano-sized ribbon was gained at 40-45 rad/s. Subsequently, Fe-Si-Mn spring steels was modified by amorphous and nanocrystalline. The results show that the microscopic structure of Fe-Si-Mn spring steels modified by amorphous and nanocrystalline is better than micro-alloyed with the same amount of niobium and vanadium, the mechanical properties of Fe-Si-Mn spring steels modified by Fe-V-Nb intermediate alloy are improved evidently: the yield-strength is reached to 1484 Mpa, the yield ratio is reached to 0.94 and the hardness is reached to 64HRC when specimens quenched.

Effect of In Situ NbC-Cr7C3@graphene/Fe Nanocomposite Inoculant Modification and Refinement on the Microstructure and Properties of W18Cr4V High-Speed Steel

“…The preparation cost of the new compound inoculant is lower than that of powder metallurgy HSS. Moreover, it does not alter the cold and hot processing of HSS ingots and is suitable for large-scale industrial production [ 10 , 11 , 12 , 13 ]. We also investigated the microstructure of W18Cr4V after modification with the new nanocomposite inoculant to study its effects on the mechanical properties of HSS.…”