Structural Aspects of Zr⁺ Ion-Beam Surface Modification and Mechanical Properties of 12CrMoV Steel

Abstract:

Surface modification is an effective way both to protect structural materials and to improve their mechanical properties. However under mechanical loading the distinction of elastic moduli of a modified surface layer and adjacent bulk material causes the stress concentrators to occur, whose relaxation may give rise to localized development of plastic deformation or fracture [1]. Under cyclic loading such distinction of the properties brings to multiple microcracking of strengthened surface layer, to act as structural micronotches [2, 3]. Therefore, optimized modes and parameters for surface layer modification are to be determined being a certain compromise between strength/ductility of the layer and its thickness etc.

• Periodical: Applied Mechanics and Materials (Volume 770)
• Pages: 81-86
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.770.81
• Online since: June 2015
• Authors: Iliya Vlasov*, Sergey Panin, Viktor Sergeev, Vladimir Titkov, Pavlo Maruschak
• Keywords: Deformation, Fracture, Ion Beam Irradiation, Multiple Cracking, Strength

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