Effect of cellular dislocation structure on the strength of additively manufactured 316L stainless steel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Authors

Abstract

Additively manufactured (AM) 316L stainless steel (SS) often contains cellular dislocation structure which is a distinct microstructural feature compared with those fabricated traditionally, like casting and forging. The role of this unique cellular dislocation structure on the mechanical properties of the AM 316L SS needs to be determined to guide its further performance improvement. In this study, the effect of cellular dislocation structure on the strength of AM 316L SS was investigated via micro-mechanical compression test. Single crystalline micro-pillars were firstly prepared from both the as-built and annealed AM 316L SS bulk specimens, with and without cellular dislocation structure relatively. The results show a significant increase of the yield strength of the micro-pillars with the cellular dislocation structure. The micro-pillars containing cellular dislocation structure with different sizes and morphologies have been studied to evaluate the effect of cellular dislocation structure on the strength of AM 316L SS.

Bibliographic note

Publisher Copyright: © 2021 Trans Tech Publications Ltd, Switzerland.

Details

Original languageEnglish
Title of host publicationTHERMEC 2021
Subtitle of host publicationInternational Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications
EditorsMihail Ionescu, Christof Sommitsch, Cecilia Poletti, Ernst Kozeschnik, Tara Chandra
Publication statusPublished - 5 Jan 2021
EventInternational Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications, THERMEC 2021 - Vienna, Austria
Duration: 10 May 202114 May 2021

Publication series

NameMaterials Science Forum
PublisherTrans Tech Publications Ltd
Volume1016
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceInternational Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications, THERMEC 2021
CountryAustria
CityVienna
Period10/05/2114/05/21

Keywords

  • 316L Stainless steel, Additive manufacturing, Cellular dislocation structure, Micro-pillar compression