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2 Acta Physica Polonica A

2 2016

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Structures of Cu-Based Glass Forming System Doped with Iron

100%

Kozieł T. , Latuch J. , Czeppe T. , Ratuszek W. , Cios G. , Zielińska-Lipiec A. , Bała P.

nr 4

913-915

The effects of iron additions on the structure of (Cu_{0.47}Ti_{0.34}Zr_{0.11}Ni_{0.08})_{100-x}Fe_{x} (x=0, 1.5, 3, 6) glass forming system are presented. The alloys were synthesized by arc melting of high purity elements and melt spun to form: rapidly quenched ribbons. X-ray diffraction studies showed the amorphous structure of the base and Fe-containing alloys, confirmed by the presence of exothermic peaks on differential scanning calorimetry curves. Bulk samples in the form of rods (Φ3×55 mm) were cast using a suction casting unit attached to the arc melter. Structural investigations revealed partial crystallization of the base Cu₄₇Ti₃₄Zr₁₁Ni₈ alloy. Iron additions significantly decreased the glass forming ability of the alloy, leading to primary crystallization of dendrites.

X-ray Diffraction and EBSD Study of Al-Ti-Co-Ni-Fe High-Entropy Alloy

100%

Górecki K. , Bała P. , Cios G. , Stępień M. , Kozieł T. , Wieczerzak K. , Tokarski T.

nr 4

991-992

Al₁₅Ti₂₀Co₂₀Ni₂₅Fe₂₀ alloy, synthesized in an arc furnace, was characterized by microscopic investigations, X-ray diffraction and electron backscatter diffraction techniques. Theoretical assumptions indicate a dual-phase crystal structure fcc+bcc. It was shown that dendrites and eutectic are bcc phase, and the interdendritic region is fcc phase.