TY - JOUR N2 - Mixture of nickel and titanium powders were milled in planetary mill under argon atmosphere for 100 hours at room temperature. Every 10 hours the structure, morphology and chemical composition was studied by X-ray diffraction method (XRD), scanning electron microscope (SEM) as well as electron transmission microscope (TEM). Analysis revealed that elongation of milling time caused alloying of the elements. After 100 hours of milling the powders was in nanocrystalline and an amorphous state. Also extending of milling time affected the crystal size and microstrains of the alloying elements as well as the newly formed alloy. Crystallization of amorphous alloys proceeds above 600°C. In consequence, the alloy (at room temperature) consisted of mixture of the B2 parent phase and a small amount of the B19' martensite. Dependently on the milling time and followed crystallization the NiTi alloy can be received in a form of the powder with average crystallite size from 1,5 up to 4 nm. L1 - http://www.czasopisma.pan.pl/Content/113017/PDF/AMM-2019-3-36-Salwa.pdf L2 - http://www.czasopisma.pan.pl/Content/113017 PY - 2019 IS - No 3 EP - 1022 DO - 10.24425/amm.2019.129489 KW - NiTi alloys KW - high-energy ball milling KW - crystallite size KW - microstrain KW - lattice parameters A1 - Salwa, P. A1 - Goryczka, T. PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 64 DA - 2019.09.03 T1 - Influence of Milling Time on Formation of NiTi Alloy Produced by High-Energy Ball Milling SP - 1017 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/113017 T2 - Archives of Metallurgy and Materials ER -