S. Sistla
RWTH Aachen University
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Publication
Featured researches published by S. Sistla.
Physica Scripta | 2017
Y. Mao; J. W. Coenen; J. Riesch; S. Sistla; J. Almanstötter; B. Jasper; A. Terra; T. Höschen; H. Gietl; Martin Bram; Jesús González-Julián; Ch. Linsmeier; Christoph Broeckmann
In future fusion reactors, tungsten is the prime candidate material for the plasma facing components. Nevertheless, tungsten is prone to develop cracks due to its intrinsic brittleness—a major concern under the extreme conditions of fusion environment. To overcome this drawback, tungsten fiber reinforced tungsten (Wf/W) composites are being developed. These composite materials rely on an extrinsic toughing principle, similar to those in ceramic matrix composite, using internal energy dissipation mechanisms, such as crack bridging and fiber pull-out, during crack propagation. This can help Wf/W to facilitate a pseudo-ductile behavior and allows an elevated damage resilience compared to pure W. For pseudo-ductility mechanisms to occur, the interface between the fiber and matrix is crucial. Recent developments in the area of powder-metallurgical Wf/W are presented. Two consolidation methods are compared. Field assisted sintering technology and hot isostatic pressing are chosen to manufacture the Wf/W composites. Initial mechanical tests and microstructural analyses are performed on the Wf/W composites with a 30% fiber volume fraction. The samples produced by both processes can give pseudo-ductile behavior at room temperature.
Composites Part A-applied Science and Manufacturing | 2018
Y. Mao; J. W. Coenen; J. Riesch; S. Sistla; J. Almanstötter; B. Jasper; A. Terra; T. Höschen; H. Gietl; Ch. Linsmeier; Christoph Broeckmann
symposium on fusion technology | 2016
J. W. Coenen; J. Riesch; J.-H. You; M. Riethm; G. Pintsuk; H. Gietl; B. Jasper; F. Klein; A. Litnovsky; Y. Mao; A. von Müller; S. Sistla; T. Wegener; Christoph Broeckmann; Ch. Linsmeier; R. Neu
Nuclear Materials Conference | 2018
Y. Mao; J. Riesch; H. Gietl; J. W. Coenen; S. Sistla; A. Terra; L. Raumann; Ch. Broeckmann; Ch. Linsmeier; T. Höschen; B. Jasper; J. Almanstötter
Proc. of 19th Plansee Seminar, ed. H. Kestler, L. Sigl | 2017
J. W. Coenen; J. Riesch; T. Wegener; H. Gietl; Christian Linsmeier; Y. Mao; S. Sistla; R. Neu; F. Klein; B. Jasper; Martin Bram; Ch. Broeckmann; A. Litnovsky
DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM) | 2017
Y. Mao; J. W. Coenen; J. Riesch; S. Sistla; B. Jasper; A. Terra; Ch. Linsmeier; Ch. Broeckmann
DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM) | 2017
Y. Mao; J. Riesch; J. W. Coenen; Ch. Linsmeier; A. Terra; Ch. Broeckmann; S. Sistla; B. Jasper
82. Jahrestagung der DPG und DPG-Frühjahrstagung der Sektion AMOP | 2017
Y. Mao; J. Riesch; H. Gietl; J. W. Coenen; S. Sistla; A. Terra; Ch. Broeckmann; Jesús González-Julián; Ch. Linsmeier; T. Höschen; B. Jasper; Martin Bram; J. Almanstötter
World PM2016 Congress & Exhibition | 2016
S. Sistla; Karl Marko Hajeck; Anke Kaletsch; Christoph Broeckmann
Archive | 2016
Christoph Broeckmann; Christian Hopmann; Georg J. Schmitz; S. Sistla; Marcel Spekowius; Roberto Spina; Chung Van Nguyen