Досліджено розподіл мікротвердості та параметрів рентгенівської дифракції (інтенсивність та ширина дифракційних максимумів) по поверхні зразка високоентропійного сплаву складу CrMnFeCoNi2Cu. Показано наявність відповідного зв"язку між мікротвердістю та відносною інтенсивністю, що може бути пояснена наслідком анізотропії пружних властивостей, що встановлена для таких ГЦК сплавів.
The CrMnFeCoNi2Cu high entropy alloy was prepared by vacuum arc melting of pure single element material in high-purity argonatmosphere on a water-cooled Cu hearth. After the homogenization the rectangular specimen of the size 10х12 mm2 was cut from the alloying ingot. Microstructure investigations of alloy was carried out by x-ray diffraction (XRD) using DRON-4 diffractometer with Co K? radiation. The series of XRD-partents were obtained by displacement xray beam along two side of specimen with 2 mm step. The microhardness was measured by using PMT-2 mycro-hardometer along longer side of the sample with discrete less than 0.2 mm. The distributions of the microhardness and diffraction parameters (the intensity and the diffraction maximum wide) on the surface of the high entropy CrMnFeCoNi2Cu alloy were obtained. The existence of the appropriate connection between the mic&rohardness and relative intensity was shown. Such connection issues due to anisotropy elastic properties that was revealed for such FCC alloys.
