Investigation on the thermo-mechanical properties of hot stamped parts by using laser-implanted tool surfaces

Schirdewahn S, Carstensen N, Hilgenberg K, Merklein M (2022)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2022

Conference Proceedings Title: IOP Conf. Ser.: Mater. Sci. Eng. 1270 012114

Event location: Taiyuan CN

DOI: 10.1088/1757-899X/1270/1/012114

Open Access Link: https://iopscience.iop.org/article/10.1088/1757-899X/1270/1/012114/pdf

Abstract

In the automotive industry, hot stamping has been established as a key technology for manufacturing safety-related car body components with high strength-to-weight ratio. During the forming operation, however, hot stamping tools are highly stressed by cyclic thermo-mechanical loads, which encourage the formation of severe wear and high friction at the blank-die interface. Against this background, an innovative surface engineering technology named laser implantation has been investigated for improving the formability of the parts and the efficiency of the hot stamping process. The laser implantation process is based on the generation of highly wear resistant microfeatures on tool surfaces by embedding hard ceramic particles via pulsed laser radiation. As a consequence, the contact area of the tool and thus the tribological and thermal interactions at the blank-die interface are locally influenced. In previous studies, the improved tribological performance of the modified tool surfaces has already been proven. However, the thermal interactions between tool and workpiece have not been analyzed, which in turn have a significant impact on the resulting part properties. In this regard, quenching tests have been carried out under hot stamping conditions by using conventional as well as laser-implanted tooling systems. Based on these results, Vickers hardness test and optical measurements have been performed on the quenched blanks, to qualify the mechanical properties and clarify the cause-effect relations.

Authors with CRIS profile

Stephan Schirdewahn Institute of Manufacturing Technology (LFT) Marion Merklein Institute of Manufacturing Technology (LFT)

Related research project(s)

Laser implantation of press hardening tools to influence the tribological and thermal properties for the process application Nov. 1, 2020 - Oct. 31, 2022

Involved external institutions

Bundesanstalt für Materialforschung und -prüfung (BAM) DE Germany (DE)

How to cite

APA:

Schirdewahn, S., Carstensen, N., Hilgenberg, K., & Merklein, M. (2022). Investigation on the thermo-mechanical properties of hot stamped parts by using laser-implanted tool surfaces. In IOP Conf. Ser.: Mater. Sci. Eng. 1270 012114. Taiyuan, CN.

MLA:

Schirdewahn, Stephan, et al. "Investigation on the thermo-mechanical properties of hot stamped parts by using laser-implanted tool surfaces." Proceedings of the The 19th International Conference on Metal Forming 2022, Taiyuan 2022.

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