Residual stress determination by neutron diffraction in low-carbon steel wires with accumulated shear deformation

0483214 - ÚJF 2018 RIV HR eng C - Konferenční příspěvek (zahraniční konf.)
Rogante, M. - Mikula, Pavol - Strunz, Pavel - Zavdoveev, A.
Residual stress determination by neutron diffraction in low-carbon steel wires with accumulated shear deformation.
Mechanical Technology and Structural Materials. Vol. 2017. Split: Hrvatsko društvo za strojarske tehnologije, 2017, s. 111-115. ISSN 1847-7917.
[7th International Conference - Mechanical Technologies and Structural Materials (MTSM 2017). Split (HR), 21.09.2017-22.09.2017]
Grant CEP: GA MŠMT LM2015056
GRANT EU: European Commission(XE) 283883 - NMI3-II
Institucionální podpora: RVO:61389005
Klíčová slova: Residual stresses * Neutron diffraction * Steel
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
http://www.strojarska-tehnologija.hr/preuzimanja/

Modern methods of severe plastic deformation (SPD) currently allow obtaining the ultrafine-grained (UFG) structure nearly in any material. In the manufacturing process of wire with UFG structure, a main restriction is the continuous drawing scheme in which this process occurs, thus it is important to consider the factors affecting the drawing efficiency. Despite the data on SPD steels such as strength, plasticity and conductivity, obtained by classical methodologies, further investigations are needed: a key information is the residual stresses (RS) status, and RS determination is an essential issue to improve knowledge of SPD effects. In this work, 15 wires samples made of low-alloyed quality structural steel Grade 08G2S GOST 1050 with accumulated shear deformation - as result of rolling with shear of the metal ingot and conventional wire drawing - have been investigated by neutron diffraction (ND). Results provide substantial data helping to evaluate the effect of shear deformation on RS of the considered steel, as well as additional support to complement the information already achieved by using the other characterization methodologies. Knowledge of the RS status can help developing a lowcarbon wire drawing technology with needed manufacturability and efficiency, playing a decisive role in the debugging of material selection and engineering design requirements.
Trvalý link: http://hdl.handle.net/11104/0278592