The role of B and Si in the formation of (FeCoCrNi)_100-x-yB_xSi_y high-entropy metallic glasses is studied. It is found that a content of B between 10 and 20 at% and of Si between 5 and 15 at% is able to produce a completely amorphous structure. The microstructural evolution of two of this high-entropy metallic glass compositions, (FeCoCrNi)₈₀B₂₀ and (FeCoCrNi)₈₀B₁₀Si₁₀, have been studied by X-ray diffraction and Transmission Mössbauer Spectroscopy. In both compositions, the first crystallization process corresponds to the formation of metastable, M₃B, and stable, M₂(B,Si), borides where M stands for metallic atoms. In the Si containing sample a BCC phase also appears. At the second crystallization stage the metastable and the BCC phases disappear and stable M₂B or M₂(B,Si) phases begin to grow simultaneously with an FCC structure that presents a distribution of possible environs. The fully crystallized structure consists of boride and silicide phases and a paramagnetic FCC phase. The presence of Si promotes the crystallization of a BCC phase and the refinement of the microstructure leading to smaller and more uniform grains.

研究了硼和硅在（FeCoCrNi）_100-xy B _x Si _y高熵金属玻璃的形成中的作用。发现B的含量在10至20原子％之间，Si的含量在5至15原子％之间能够产生完全非晶的结构。通过X射线衍射和透射Mössbauer光谱研究了两种高熵金属玻璃成分（FeCoCrNi）₈₀ B ₂₀和（FeCoCrNi）₈₀ B ₁₀ Si ₁₀的微观结构演变。在两种组合物中，第一个结晶过程均对应于亚稳M ₃ B和稳定M _{2的形成。}（B，Si），硼化物，其中M代表金属原子。在含硅样品中，也会出现BCC相。在第二个结晶阶段，亚稳相和BCC相消失，稳定的M ₂ B或M ₂（B，Si）相开始与同时具有可能环境分布的FCC结构同时生长。完全结晶的结构由硼化物和硅化物相以及顺磁性FCC相组成。Si的存在促进了BCC相的结晶和微结构的细化，从而导致晶粒更小，更均匀。