Subscribe to the EPMA Mailing List

In-situ Micro-tensile Testing Of Additive Manufactured Maraging Steels In SEM: Influence Of Build Orientation, Thickness And Roughness On The Resulting Mechanical Properties

  • : Kumar Babu Surreddi1, Christos Oikonomou2, Patrik Karlsson3, Mikael Olsson1, Lars Pejryd3
  • : 1Dalarna University, 2Uddeholms AB, 3Örebro University
  • : PDF Download
  • : 2017

Abstract

Selective laser melting (SLM) is frequently used additive manufacturing technique capable of producing various complex parts including thin-wall sections. However the surface roughness is a limiting factor in thin sections produced by SLM process when strength is the main criterion. In this study, the influence of build orientation, thickness and roughness on the resulting mechanical properties of as-built test samples was investigated. Various thin sheets of EN 1.2709 maraging steel built in horizontal and vertical orientations produced by SLM were investigated using in-situ micro-tensile testing in a scanning electron microscope. The mechanical strength and deformation mechanisms were analyzed and explained based on thickness and build orientation. Increased ductility was observed in thicker samples as well as in the horizontal build samples. The results illustrate the potential of the in-situ test technique and aspects important to consider in design guidelines for thin AM structures.

€25.00

Non-EPMA member price shown. If you are an EPMA member please log in for your discount.
If you are logged in as a member but are still seeing this message, please contact us at website@epma.com.
If you would like to find out about becoming an EPMA member, click here.
This product is currently only available to purchase via this website to companies with a valid EU VAT Number. If you are an individual or company without an EU VAT number wishing to purchase this, please contact EPMA directly at publications@epma.com. Alternatively, past Euro PM papers are available via ProQuest and Elsevier.
*
* This field is required
Go To Top