Formation and investigation of the structure and mechanical properties of bulk metallic glassy composite (Ti–Zr)–(Cu–Ni–Co) alloys with the addition of Boron

(Ti–Zr)–(Cu–Ni–Co) bulk metallic alloys containing 1000 mass ppm of boron were investigated in the present work. Taking compositional formula (Ti–Zr)49.5+x(Cu–Ni)49.5−xCo1 as a basis, we increased the content of Ti and Zr elements and decreased the content of Cu and Ni with the purpose of production of crystal–glassy composites. Such a kind of approach may allow combination of high strength of glassy alloys and good plasticity of crystalline alloys in these composite materials. According to this approach a large number of the alloys of different composition and different diameters were prepared and investigated. Some of the prepared bulk glassy-crystal composite samples showes rather good properties: the compressive strength of 1800–2500 MPa and compressive plasticity up to 13.5%.