Additive Manufacturing of Tool Steels

The public funded project “AddSteel” aims to develop functionally adapted steel materials for additive manufacturing (AM). Based on the AM process laser powder bed fusion (LPBF), the holistic process chain, including alloy design, powder atomization, AM, and postheat treatment, is considered to achi...

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Bibliographic Details
Published in:Steel research international 2023-04, Vol.94 (4), p.n/a
Main Authors: Vogelpoth, Andreas, Saewe, Jasmin, Krull, Hans-Günter, Richert, Svenja, Weiland, Peter, Nerzak, Thomas, Eibl, Florian, Pastors, Felix
Format: Article
Language:English
Subjects:
3D-printing
Additive manufacturing
Alloy development
Atomizing
Carbon
Carbon content
Carbon tool steels
Chemical composition
Gas flow
Heat treatment
Heating
Hot work tool steels
Laser beam welding
Manufacturing
Martensite
martensite start temperatures
Powder beds
Process management
tool steels
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Summary:The public funded project “AddSteel” aims to develop functionally adapted steel materials for additive manufacturing (AM). Based on the AM process laser powder bed fusion (LPBF), the holistic process chain, including alloy design, powder atomization, AM, and postheat treatment, is considered to achieve this objective. Tool steels are usually characterized by higher carbon content and limited weldability, leading to limited processability for LPBF. To extend these limitations, different approaches for tool steels are investigated: for high‐carbon tool steels, the effects of lower martensite start temperature are investigated using the alloy 1.2842 as an example. A low martensite start temperature seems to be advantageous for crack‐free processing with LPBF. In order to avoid a high hardness level after rapid cooling, the use of a hot work steel with a carbon content of 0.2 wt% is investigated. Due to the chemical composition of the material, a moderate preheating temperature
ISSN:1611-3683
1869-344X
DOI:10.1002/srin.202200372