In this study, three news compositions of multicomponent Fe–Co–Nb–B–Y bulk metallic glasses (BMGs) were developed by using commercial raw materials (Fe–Nb and Fe–B) and suction casting process.The fully glassy cylindrical samples (∅ = 3.0 mm) were reached for Fe63Co7Nb4B23Y3 and Fe52Co18Nb4B23Y3 (at.%) compositions.
The largest value of supercooled liquid region (ΔTx = 139 K) was obtained for the Fe60Co7Nb4B26Y3 (at.%) composition hiboost 4k smart link of ribbon sample.The high microhardness value was found in fully glassy and crystalline samples, up to 1175 ± 35 HV and 1355 ± 35 HV, respectively.The presence of borides with the highly refined microstructure in fully crystalline samples cooperated with remtavares.com highest hardness values overcoming the hardness in fully glassy samples.
Those BMGs open up the possibility of using the Fe–Co–Nb–B–Y system for warm consolidation within the ΔTx or as coatings produced by high velocity oxygen fuel, laser cladding or additive manufacturing process could allow the application of these new materials in the chemical or petrochemical industries.