Partitioning and Coarsening Dynamics of Precipitate-Strengthened Cr-Si Alloys : The Role of Ge, Pt, and Mo

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00008953
URN to cite this document: urn:nbn:de:bvb:703-epub-8953-0

Title data

Ulrich, Anke Silvia ; Pfizenmaier, Petra ; Kerbstadt, Michael ; Pelchen, Lucas ; Solimani, Ali ; Glatzel, Uwe ; Galetz, Mathias Christian:
Partitioning and Coarsening Dynamics of Precipitate-Strengthened Cr-Si Alloys : The Role of Ge, Pt, and Mo.
In: Advanced Engineering Materials. Vol. 27 (2025) Issue 9 . - 2401818.
ISSN 1527-2648
DOI der Verlagsversion: https://doi.org/10.1002/adem.202401818

	Format: PDF Name: Adv Eng Mater - 2025 - Ulrich - Partitioning and Coarsening Dynamics of Precipitate‐Strengthened Cr‐Si Alloys The Role of.pdf Version: Published Version Available under License Creative Commons BY 4.0: Attribution
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Project information

Project title:	Project's official title Project's id Wärmebehandelbare Chrombasislegierungen für extreme Temperaturen 287397384 MaDeRaisE 20E2222 Open Access Publizieren No information
Project financing:	Deutsche Forschungsgemeinschaft Bundesministerium für Wirtschaft und Klimaschutz

Abstract

Cr solid solution (Crss) alloys strengthened by A15-phase precipitates (e.g., Cr3Si) are promising candidates for high-temperature structural materials. A series of Cr-base alloys (Cr ≥ 89 at%) with strengthening A15-phase precipitates consisting of up to five alloying elements is investigated. Scanning electron microscopy with energy-dispersive X-ray spectroscopy, electron probe microanalysis with wavelength-dispersive X-Ray spectroscopy, X-ray diffraction, image analysis, and nano- and microindentation are used to characterize the interplay of alloying elements on hardness, microstructural partitioning, and coarsening behavior when annealed for 400 h at 1050 °C, 100 h at 1200 °C, and 100 h at 1350 °C. The impact of the alloying elements on microstructure is found to be combinatory in the investigated composition space, independent of the compositional complexity of the alloy. Ge and especially Pt enhance microstructural coarsening, while Mo additions can counteract this. Ge and Pt mainly partition in the A15 phase, while Mo equally partitions in both phases. Partitioning of Pt depends on the overall alloy composition, which is the reason for enhanced precipitate coarsening. Considering the different partitioning behaviors of individual elements, a collective parameter (Si equivalent (Sieq)) is introduced in this work to formulate the impact of additional alloying elements on the microstructural evolution of such Cr-base alloys.

Further data

Item Type:	Article in a journal
DDC Subjects:	000 Computer Science, information, general works 600 Technology, medicine, applied sciences 600 Technology, medicine, applied sciences > 620 Engineering
Institutions of the University:	Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Metals and Alloys Faculties > Faculty of Engineering Science > Chair Metals and Alloys > Chair Metals and Alloys - Univ.-Prof. Dr.-Ing. Uwe Glatzel Faculties > Faculty of Engineering Science > Junior Professor Metals and Alloys II > Junior Professor Metals and Alloys II - Juniorprof. Dr.-Ing. Anke Silvia Meißner Profile Fields Profile Fields > Advanced Fields Profile Fields > Advanced Fields > Advanced Materials Research Institutions Research Institutions > Central research institutes Research Institutions > Central research institutes > Bayreuth Center for Material Science and Engineering - BayMAT Faculties > Faculty of Engineering Science > Junior Professor Metals and Alloys II
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-8953-0
Date Deposited:	03 Mar 2026 14:21
Last Modified:	03 Mar 2026 14:21
URI:	https://epub.uni-bayreuth.de/id/eprint/8953

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