Laser Beam Melting and heat-treatment of 1.2343 (AISI H11) tool steel - microstructure and mechanical properties

Journal article
(Original article)


Publication Details

Author(s): Huber F, Bischof C, Hentschel O, Heberle J, Zettl J, Nagulin KY, Schmidt M
Journal: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing
Publication year: 2018
Volume: 742
Journal issue: 10
Pages range: 109-115
ISSN: 0921-5093


Abstract

Laser Beam Melting (LBM) of metals is an innovative additive manufacturing
technology for producing complexly shaped parts. However, the spectrum
of available materials is yet limited and the qualification of further
alloys is subject of ongoing research. Considering tooling applications
e.g. for injection moulding low alloyed tool steels
like 1.2343 (AISI H11) would be of particular interest. The feasibility
of processing 1.2343 by LBM has already been shown. Besides the
LBM-process itself, also a heat-treatment process has to be taken into
account. Heat-treatment is necessary to reduce the process-inherent
internal stress and to adjust the desired mechanical properties. Hence,
an experimental study on the heat-treatment of laser beam molten specimens made from 1.2343 is conducted. The resulting microstructure is characterised by metallographic microsections and electron backscatter diffraction
(EBSD). Additionally, hardness measurements and tensile tests give
information about the mechanical properties in dependence of the build
direction and the heat-treatment strategy. The ultimate tensile strength after annealing
reached 2148 ± 16 MPa along with an elongation at break of 8.8 ± 1.1 %.
The hardness of the LBM-generated material was determined to 737 ± 16
HV1 after hardening and to 585 ± 9 HV1 after annealing.


FAU Authors / FAU Editors

Bischof, Corinna
Lehrstuhl für Photonische Technologien
Heberle, Johannes
Lehrstuhl für Photonische Technologien
Huber, Florian
Lehrstuhl für Photonische Technologien
Schmidt, Michael Prof. Dr.-Ing.
Lehrstuhl für Photonische Technologien


How to cite

APA:
Huber, F., Bischof, C., Hentschel, O., Heberle, J., Zettl, J., Nagulin, K.Y., & Schmidt, M. (2018). Laser Beam Melting and heat-treatment of 1.2343 (AISI H11) tool steel - microstructure and mechanical properties. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 742(10), 109-115. https://dx.doi.org/10.1016/j.msea.2018.11.001

MLA:
Huber, Florian, et al. "Laser Beam Melting and heat-treatment of 1.2343 (AISI H11) tool steel - microstructure and mechanical properties." Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 742.10 (2018): 109-115.

BibTeX: 

Last updated on 2019-06-01 at 15:10