STRAIN-RATE AND PRINTING DIRECTION DEPENDENCY OF COMPRESSIVE BEHAVIOUR OF 3D PRINTED STAINLESS STEEL 316L

• Main Authors: Michaela Neuhäuserová, Petr Koudelka, Jan Falta, Marcel Adorna, Tomáš Fíla, Petr Zlámal
• Format: Article
• Language: English
• Published: CTU Central Library 2019-12-01
• Series: Acta Polytechnica CTU Proceedings
• Subjects: 3dprinting,selectivelasersintering,stainlesssteel316l,printingdirection,splithopkinson pressure bar
• Online Access: https://ojs.cvut.cz/ojs/index.php/APP/article/view/6029

The paper is focused on evaluation of the relation between mechanical properties of 3D printed stainless steel 316L-0407 and printing direction (i.e. the orientation of the part which is being printed in the manufacturing device) subjected to compressive loading at different strain-rates. In order to evaluate the strain rate dependency of the 3D printed material’s compressive characteristics, dynamic and quasi-static experiments were performed. Three sets of bulk specimens were produced, each having a different printing orientation with respect to the powder bed plane (vertical, horizontal and tilted). To assess the deformation behaviour of the 3D printed material, compressive stress-strain diagrams and compressive yield strength and tangent modulus were evaluated.