C
Christoph Breuning
Researcher at University of Erlangen-Nuremberg
Publications - 12
Citations - 71
Christoph Breuning is an academic researcher from University of Erlangen-Nuremberg. The author has contributed to research in topics: Computer science & Microstructure. The author has an hindex of 2, co-authored 6 publications receiving 9 citations.
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Journal ArticleDOI
How electron beam melting tailors the Al-sensitive microstructure and mechanical response of a novel process-adapted γ-TiAl based alloy
David Wimler,Katharina Käsznar,Michael Musi,Christoph Breuning,Matthias Markl,Jozef Keckes,Helmut Clemens,Carolin Körner,Svea Mayer +8 more
TL;DR: In this paper, the impact of different process parameters on the total and local Al-content as well as the resulting as-built and heat-treated microstructure in a complex multiphase Ti-44.8Al-4.1Nb-0.7W-1.1Zr- 0.4Si-1B (at.%) alloy was investigated.
Journal ArticleDOI
A multivariate meltpool stability criterion for fabrication of complex geometries in electron beam powder bed fusion
TL;DR: In this article, the authors introduced and verified a characteristic scan length dependent process parameter limit for the fabrication of complex geometries, which may be used as a guideline for the selection of process parameters and the development of new scan strategies.
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A Single Crystal Process Window for Electron Beam Powder Bed Fusion Additive Manufacturing of a CMSX-4 Type Ni-Based Superalloy.
TL;DR: In this article, a full microstructure map for additive manufacturing of technical single crystals is presented using the conventional single crystal Ni-based superalloy CMSX-4, and a strategy for the fabrication of high fraction single crystals in powder bed fusion additive manufacturing is deduced.
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Surface topographies from electron optical images in electron beam powder bed fusion for process monitoring and control
TL;DR: In this article , a complete computation chain is proposed, based on a developed model of the imaging process, which explains the correction of image distortions and the calibrated calculation of the gradient information of the respective surfaces.
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Impact of the Power-Dependent Beam Diameter during Electron Beam Additive Manufacturing: A Case Study with γ-TiAl
TL;DR: In this article , the authors demonstrate typical scaling issues when applying process parameters to scan lengths up to 45 mm using a fourth generation γ-TiAl alloy and demonstrate that in-depth knowledge of the electron beam diameter is required to thoroughly control the PBF-EB process, especially when scaling process parameters from simply shaped geometries to complex parts with various scan lengths.