Title: Quality related effects of the preheating temperature on laser melted high carbon content steels
Authors : Beck, Christian
Kirchheim, Andreas
Dennig, Hans-Jörg
Zumofen, Livia
Proceedings: Industrializing Additive Manufacturing : Proceedings of Additive Manufacturing in Products and Applications — AMPA2017 Zurich
Pages : 210
Pages to: 219
Conference details: AMPA2017 Zurich
Editors of the parent work: Meboldt, Mirko
Klahn, Christoph
Publisher / Ed. Institution : Springer
Publisher / Ed. Institution: Cham
Issue Date: 2017
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Internal stress; M2 HSS - tool steel; High carbon content steel; Selective laser melting
Subject (DDC) : 620: Engineering
620.11: Engineering materials
621.8: Machine engineering
Abstract: Additive manufacturing technology selective laser melting (SLM) is an emergent technology allowing generation of complex metal parts layer by layer. During the past years the range of available and processable materials for SLM has been widely extended. However, there is a still a lack of SLM processable high carbon content steels. In the fields of machine elements, especially in advanced cutting tools a large potential of laser melting is identified regarding function integration, topology optimisation and implementation of bionic concepts. In these fields of application high carbon content steels are frequently used. The M2 High Speed Steel (HSS) is a high carbon content steel that belongs to the group of tool steels. As other high carbon content steels, M2 HSS tends to a high susceptibility to cracking. Therefore, the strongly pronounced temperature gradients occurring during the laser melting process lead to part deformation and crack formation. Heating of the SLM baseplate represents a promising approach to reduce temperature gradients and internal stresses. In the present study the quality related effects of reduced temperature gradients on SLM parts were evaluated using a baseplate heating system. Optimized process parameters allowed a stable processing of M2 HSS leading to a relative part density of 99 %. Residual stresses decreased with increasing baseplate temperature by trend.
Departement: School of Engineering
Organisational Unit: Centre for Product and Process Development (ZPP)
Publication type: Conference Paper
DOI : 10.1007/978-3-319-66866-6_21
ISBN: 978-3-319-66866-6
URI: https://digitalcollection.zhaw.ch/handle/11475/1745
Appears in Collections:Publikationen School of Engineering

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