2016 №10 (10) DOI of Article
2016 №10 (02)

Automatic Welding 2016 #10
Avtomaticheskaya Svarka (Automatic Welding), #10, 2016, pp. 3-9
Effect of anisotropy of properties of nickel alloy on stresses and plastic deformations in weld zone

K.A. Yushchenko, E.A. Velikoivanenko, N.O. Chervyakov, G.F. Rosynka and N.I. Pivtorak
E.O. Paton Electric Welding Institute, NASU 11 Kazimir Malevich Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
A calculation method was used for investigation of the kinetics of stress-strain state in welding of nickel alloy single crystal taking into account anisotropy of its thermophysical and mechanical properties. It is shown that anisotropy of the properties of single crystal promotes for growth of a rate of plastic deformations in temperature interval BTI-II in comparison with isotropic alloy of such type (having polycrystalline structure). The rate of growth of longitudinal plastic deformations in the single crystal in BTI-II temperature interval can approximately 2.0–2.5 times exceed that in the polycrystalline variant of alloy. This should be taken into account in development of corresponding structures and technology of their manufacture. 9 Ref., 3 Tables, 7 Figures.
Keywords: mathematical modelling, stress-strain state, single crystals, nickel alloys, properties anisotropy
Received:                23.05.16
Published:               23.10.16
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