Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Phase and structural transformations in the Ti 49.5Ni 50.5 alloy with a shape-memory effect during torsion under high pressure. / Pushin, V. G.; Valiev, R. Z.; Valiev, E. Z.; Kourov, N. I.; Kuranova, N. N.; Makarov, V. V.; Pushin, A. V.; Uksusnikov, A. N.
в: Physics of Metals and Metallography, Том 113, № 3, 01.03.2012, стр. 256-270.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Phase and structural transformations in the Ti 49.5Ni 50.5 alloy with a shape-memory effect during torsion under high pressure
AU - Pushin, V. G.
AU - Valiev, R. Z.
AU - Valiev, E. Z.
AU - Kourov, N. I.
AU - Kuranova, N. N.
AU - Makarov, V. V.
AU - Pushin, A. V.
AU - Uksusnikov, A. N.
PY - 2012/3/1
Y1 - 2012/3/1
N2 - Results of investigations of structural and phase transformations that occur in the titanium-nick-Elide-based alloy Ti 49.5Ni 50.5 with a shape memory effect during severe plastic deformation by torsion under high pressure (HPT) are reported. The studies were performed using transmission and scanning electron microscopy, neutron and X-ray diffraction, and measurements of temperature dependences of electrical resistivity. The martensitic B2 → B19' transformation was found to be induced in the alloy when applying a high pressure. After unloading, the martensitic B19' phase is retained in the alloy. The fine structure of the B19' martensite and its evolution into nanocrystalline and, subsequently, amorphous state during HPT with 1/4, 1/2, 1, 5, and 10 rev have been studied. It was shown that, after HPT, all nanosized crystallites whose sizes are less than 30-50 nm have a B2-type structure and, therefore, the reverse martensitic B19' → B2 trans-formation is realized in the alloy at room temperature after unloading.
AB - Results of investigations of structural and phase transformations that occur in the titanium-nick-Elide-based alloy Ti 49.5Ni 50.5 with a shape memory effect during severe plastic deformation by torsion under high pressure (HPT) are reported. The studies were performed using transmission and scanning electron microscopy, neutron and X-ray diffraction, and measurements of temperature dependences of electrical resistivity. The martensitic B2 → B19' transformation was found to be induced in the alloy when applying a high pressure. After unloading, the martensitic B19' phase is retained in the alloy. The fine structure of the B19' martensite and its evolution into nanocrystalline and, subsequently, amorphous state during HPT with 1/4, 1/2, 1, 5, and 10 rev have been studied. It was shown that, after HPT, all nanosized crystallites whose sizes are less than 30-50 nm have a B2-type structure and, therefore, the reverse martensitic B19' → B2 trans-formation is realized in the alloy at room temperature after unloading.
UR - http://www.scopus.com/inward/record.url?scp=84859734563&partnerID=8YFLogxK
U2 - 10.1134/S0031918X12030118
DO - 10.1134/S0031918X12030118
M3 - Article
AN - SCOPUS:84859734563
VL - 113
SP - 256
EP - 270
JO - Physics of Metals and Metallography
JF - Physics of Metals and Metallography
SN - 0031-918X
IS - 3
ER -
ID: 35176429