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One of the methods of evaluating the mechanical properties of a material in the case of its limited amount l is the use of techniques that employ the miniaturized test specimens. The basic properties used mostly for residual life evaluation are tensile strength, impact notch toughness or impact notch toughness transition curve, fracture toughness, creep and high cycle fatigue. This paper investigates the creep properties using sub-size specimens with a cross section 2x1mm. The methodology of the creep properties evaluation is presented. Materials manufactured using laser-directed energy deposition process Inconel 718, and 10Cr-3W-3Co-1Mo creep-resistant steel without nitrogen content were tested at a temperature of 650 °C.
Keywords: Creep test, sub-sized samples, IN718© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.