%0 journal article
%@ 2238-7854
%A Kashaev, N.,Horstmann, M.,Ventzke, V.,Riekehr, S.,Huber, N.

%D 2013
%J Journal of Materials Research and Technology : JMRT
%N 1
%P 43-47 
%R doi:10.1016/j.jmrt.2013.03.003
%T Comparative study of mechanical properties using standard and micro-specimens of base materials Inconel 625, Inconel 718 and Ti-6Al-4V
%U https://doi.org/10.1016/j.jmrt.2013.03.003
1 
%X To improve innovative joining and deposition technologies for the construction of dissimilar joints, precise knowledge of the local mechanical properties of materials must be obtained. In the present article a comparative study of the tensile properties and fatigue behaviour in case of flat standard and micro-specimens of base materials Inconel 625, Inconel 718 and Ti-6Al-4V was accomplished. The aim of the study was to develop an efficient method for the investigation of the local mechanical properties by the use of micro-specimens subjected to electro discharge machining treatment and to obtain reliable tensile and fatigue test results. By the miniaturization of specimens a significant effect of roughness on mechanical properties was obtained. By considering a correction for the effective load-bearing cross-section the data obtained from micro-specimens are within 3% error with respect to standard specimen results. The results showed that the proposed technique can be successfully used to determine the tensile and fatigue properties of a small material volume.