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SUMMARY:Neutron research\, Contr. talk 1 - Residual stress and heat treatm
 ent studies of additively manufactured stainless steel by neutron imaging 
 and diffraction
DTSTART;VALUE=DATE-TIME:20210510T120000Z
DTEND;VALUE=DATE-TIME:20210510T122000Z
DTSTAMP;VALUE=DATE-TIME:20260528T085825Z
UID:indico-contribution-1067@lindico453.srv.lu.se
DESCRIPTION:Speakers: Tuerdi Maimaitiyili (Swerim AB)\nOne of the biggest 
 limitations of parts made by Selective Laser Melting (SLM) is the high ten
 sile residual stresses that accumulate in the near-surface region. They ar
 e known to have a detrimental effect on mechanical properties and can even
  cause SLM process failure. Therefore\, it is always needing to be applied
  additional heat treatment operations to relieve stress or shock peening t
 o convert the tensile stress to the compressive stresses. Without the know
 ledge of residual stress in the material\, it is not possible to estimate 
 the service life or ensure the integrity of machine parts. Among various e
 xperimental techniques\, only neutron and high-energy synchrotron X-ray te
 chniques allow us to accurately measure the deep internal stress in large 
 metallic samples with all stress components nondestructively. In this talk
 \, we will discuss how neutron techniques are important for additive manuf
 acturing or metallic materials research in general and present some of our
  residual stress characterization work performed on SLM build stainless st
 eel which utilized both standard neutron diffraction and neutron Bragg edg
 e imaging to investigate the effect of Hot Isostatic Pressing (HIP) temper
 ature and heat treatment to the residual stress.\n\nAcknowledgment: The pr
 oject is funded by Vinnova (2019-05304).\n\nhttps://lindico453.srv.lu.se/e
 vent/214/contributions/1067/
LOCATION:
URL:https://lindico453.srv.lu.se/event/214/contributions/1067/
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