In-situ shelling via selective laser melting: modelling and microstructural characterisation

Chunlei Qiu, Nicholas Adkins, Hany Hassanin, Moataz Attallah, Khamis Essa

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)
355 Downloads (Pure)


This study focuses on the use of selective laser melting (SLM) to produce tooling (a shell) that is filled with powder and subsequently consolidated via hot isostatic pressing (HIPing) so that the tooling, rather than being removed, becomes part of the sample. The microstructures of HIPed samples were studied using scanning electron microscopy (SEM) and electron backscattered diffraction (EBSD) to assess the bond between the shell and the consolidated powders. The columnar grains in the SLM-built tooling bonded with the powder although the grains in the tooling were found to be much coarser than those in the HIPed powder, leading to preferential failure in the tooling. However, failure occurred in a fairly ductile mode and reasonable tensile strengths and ductility were obtained. Finite element models were developed to define the required initial shape of the shell in order to obtain the correct geometry after HIPing. It was found that the final shapes predicted are consistent with the observations on HIPed samples.
Original languageEnglish
Pages (from-to)845-853
JournalMaterials & Design
Early online date28 Aug 2015
Publication statusPublished - 15 Dec 2015


  • Selective laser melting
  • in-situ shelling; modelling
  • hot isostatic pressing
  • microstructure
  • tensile behaviour


Dive into the research topics of 'In-situ shelling via selective laser melting: modelling and microstructural characterisation'. Together they form a unique fingerprint.

Cite this