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André A. N. Németh
Researcher at University of Oxford
Publications - 12
Citations - 446
André A. N. Németh is an academic researcher from University of Oxford. The author has contributed to research in topics: Superalloy & Ductility. The author has an hindex of 7, co-authored 12 publications receiving 190 citations. Previous affiliations of André A. N. Németh include Karlsruhe Institute of Technology.
Papers
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Journal ArticleDOI
Alloys-by-design: Application to new superalloys for additive manufacturing
Yuanbo T. Tang,Chinnapat Panwisawas,Joseph N. Ghoussoub,Yilun Gong,John W. G. Clark,André A. N. Németh,D. Graham McCartney,Roger C. Reed +7 more
TL;DR: In this paper, a new grade of γ/γ′ nickel-based superalloy for the additive manufacturing process is designed using computational approaches, taking account of the need to avoid defect formation via solidification and solid-state cracking.
Journal ArticleDOI
Environmentally-assisted grain boundary attack as a mechanism of embrittlement in a nickel-based superalloy
André A. N. Németh,D.J. Crudden,David E.J. Armstrong,David M. Collins,Kexue Li,Angus J. Wilkinson,Chris R. M. Grovenor,Roger C. Reed +7 more
TL;DR: In this paper, the degradation of polycrystalline superalloy 720Li is studied in air between room temperature and 1000°C. The physical factors responsible for the ductility dip are established using energy-dispersive X-ray spectroscopy, nanoscale secondary ion mass spectrometry and the analysis of electron backscatter diffraction patterns.
Journal ArticleDOI
The nature of the brittle-to-ductile transition of ultra fine grained tungsten (W) foil
TL;DR: In this article, four-point bend tests were performed using unnotched 100-μm UFG tungsten foil and annealed coarse-grained polycrystalline TGF (2073 K for 2h in vacuum) with exactly the same chemical composition and dimensions.
Journal ArticleDOI
On the Rapid Assessment of Mechanical Behavior of a Prototype Nickel-Based Superalloy using Small-Scale Testing
TL;DR: In this article, an electrothermal mechanical testing (ETMT) system is used to assess the mechanical behavior of a prototype single-crystal superalloy suitable for industrial gas turbine applications.
Book ChapterDOI
The Effect of Heat Treatment on Tensile Yielding Response of the New Superalloy ABD-900AM for Additive Manufacturing
Yuanbo T. Tang,Joseph N. Ghoussoub,Chinnapat Panwisawas,David M. Collins,Sajjad Amirkhanlou,John W. G. Clark,André A. N. Németh,D. Graham McCartney,Roger C. Reed +8 more
TL;DR: In this article, the heat treatment response of the new superalloy ABD-900AM, designed specifically for additive manufacturing (AM), is studied, and the as-fabricated microstructure is characterised at multiple length-scales including by X-ray synchrotron diffractometry and transmission Kikuchi diffraction imaging.