The Effect of Hot Isostatic Pressing on Surface Integrity, Microstructure And
applied sciences Article The Effect of Hot Isostatic Pressing on Surface Integrity, Microstructure and Strength of Hybrid Metal Injection Moulding, and Laser-Based Powder Bed Fusion Stainless-Steel Components Aldi Mehmeti 1,*, Donal Lynch 1, Pavel Penchev 1, Rafael Martinez Ramos 1, Denis Vincent 2, Johannes Maurath 3, David Ian Wimpenny 4, Khamis Essa 1 and Stefan Dimov 1,* 1 School of Mechanical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; D.Lynch@bham.ac.uk (D.L.); P.Penchev@bham.ac.uk (P.P.); r.a.martinezramos@bham.ac.uk (R.M.R.); K.E.A.Essa@bham.ac.uk (K.E.) 2 CEA, LITEN, DTNM, SA3D, LFM, Université Grenoble Alpes, F-38000 Grenoble, France; denis.vincent@cea.fr 3 MIMplus Technologies, Turnstraße 22, 75228 Ispringen, Germany; JMaurath@mimplus.de 4 MTC, Ansty Park, Coventry CV7 9JU, UK; David.Wimpenny@the-mtc.org * Correspondence: axm1451@student.bham.ac.uk (A.M.); s.s.dimov@bham.ac.uk (S.D.) Abstract: Hybrid manufacture of components by combining capabilities of replication and additive manufacturing processes offer a flexible and sustainable route for producing cost-effectively small batches of metal parts. At present, there are open issues related to surface integrity and performance Citation: Mehmeti, A.; Lynch, D.; of such parts, especially when utilising them in safety critical applications. The research presented Penchev, P.; Martinez Ramos, R.; in this paper investigates the ductility amplification of hybrid components produced using metal Vincent, D.; Maurath, J.; Wimpenny, injection moulding to preform and then build on them customisable sections by laser-based powder D.I.; Essa, K.; Dimov, S.
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