Mechanical properties determination of AM components

4th International Conference Recent Trends in Structural Materials

Dzugan, J.^1 ; Sibr, M.^1 ; Konopík, P.^1 ; Procházka, R.^1 ; Rund, M.^1

COMTES FHT A.s., Prumyslova 995, Dobrany

334 41, Czech Republic^1

关键词: Cooling conditions;    Deposition process;    Engineering materials;    Manufacturing techniques;    Micro tensile tests;    Processing technologies;    Supporting structure;    Yield properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/179/1/012019/pdf
DOI  :  10.1088/1757-899X/179/1/012019

来源: IOP

【 摘 要 】

Characterisation of engineering materials and components is a crucial part for design and save service life utilization. Due to components processing technologies and exploitation conditions local properties can significantly vary from location to location over larger components as well as over small material volumes with gradual material changes such as welds, coatings or additively manufactured parts. The current paper is dealing with local properties characterisation for additively manufacture (AM) components by micro tensile test (M-TT). Components produced by additive manufacturing techniques yield properties variation in dependence of the considered location within the component regarding to direction in relation to deposition process. Properties vary over the thickness, length, angle or contacts with the supporting structures necessary for a successful components production by additive manufacturing techniques. The properties differences are mainly related to varying heating/reheating and cooling conditions at various locations of usually very complex parts produced mainly by these technologies. The standard testing procedures fail to characterize such local properties of complex shaped objects due to large size requirements on specimens. Therefore, new techniques have to be established for such detailed local characterizations. Results of miniaturized tensile tests application for local properties and orientations are shown here.