Processing of low-alloyed case-hardening steel Bainidur AM by means of DED-LB/M

Bartels D, Hentschel O, Dauer J, Burgmayr W, Schmidt M (2021)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2021

Event location: München DE

URI: https://wlt.de/sites/default/files/2021-10/directed_energy_deposition/Contribution_224_final.pdf

Abstract

Low-alloyed steels are typically exposed to additional case-hardening post-processing to improve the mechanical properties in the case area of the material for increased hardness and wear resistance. Another possibility for improving these material properties is provided by in-situ alloying using laser-based directed energy deposition of metals (DED-LB/M). However, this requires basic understanding of the mechanisms when processing the base material. Within this work, different processing parameters for defect-free fabrication of the low-alloyed case-hardening steel Bainidur AM are presented. This includes the correlation of geometrical properties and internal defects like pores or cracks with the applied process parameters. Additional hardness measurements are performed for analyzing the influence of different processing strategies. It is found that a hardness gradient is formed and that the material hardness is depending on the process parameters used. Furthermore, the obtained material hardness is similar to the hardness values of conventionally bainitized samples obtained from literature.

Authors with CRIS profile

Dominic Bartels Lehrstuhl für Photonische Technologien (LPT) Oliver Hentschel Lehrstuhl für Photonische Technologien (LPT) Michael Schmidt Lehrstuhl für Photonische Technologien (LPT)

Additional Organisation(s)

Erlangen Graduate School in Advanced Optical Technologies (SAOT)

How to cite

APA:

Bartels, D., Hentschel, O., Dauer, J., Burgmayr, W., & Schmidt, M. (2021). Processing of low-alloyed case-hardening steel Bainidur AM by means of DED-LB/M. In Proceedings of the Lasers in Manufacturing (LiM) 2021. München, DE.

MLA:

Bartels, Dominic, et al. "Processing of low-alloyed case-hardening steel Bainidur AM by means of DED-LB/M." Proceedings of the Lasers in Manufacturing (LiM) 2021, München 2021.

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