An, D.; Zhao, H.; Sun, B.; Zaefferer, S.: Direct observations of collinear dislocation interaction in a Fe–17.4 Mn–1.50 Al–0.29 C (wt.%) austenitic steel under cyclic loading by in-situ electron channelling contrast imaging and cross-correlation electron backscatter diffraction. Scripta Materialia 186, pp. 341 - 345 (2020)
Haghdadi, N.; Cizek, P.; Hodgson, P. D.; He, Y.; Sun, B.; Jonas, J. J.; Rohrer, G. S.; Beladi, H.: New insights into the interface characteristics of a duplex stainless steel subjected to accelerated ferrite-to-austenite transformation. Journal of Materials Science 55 (12), pp. 5322 - 5339 (2020)
Sun, B.; Krieger, W.; Rohwerder, M.; Ponge, D.; Raabe, D.: Dependence of hydrogen embrittlement mechanisms on microstructure-driven hydrogen distribution in medium Mn steels. Acta Materialia 183, pp. 313 - 328 (2020)
Sun, B.; Ma, Y.; Vanderesse, N.; Srinivas Varanasi, R.; Song, W.; Bocher, P.; Ponge, D.; Raabe, D.: Macroscopic to nanoscopic in situ investigation on yielding mechanisms in ultrafine grained medium Mn steels: Role of the austenite-ferrite interface. Acta Materialia 178, pp. 10 - 25 (2019)
Elkot, M.; Sun, B.; Ponge, D.; Raabe, D.: Strategizing for hydrogen embrittlement by protecting the weakest microstructural element. ECF24 - European Conference on Fracture 2024 in Croatia, Zagreb, Croatia (2024)
Elkot, M.; Sun, B.; Ponge, D.; Raabe, D.: Tackling hydrogen embrittlement sensitivity and poor low-temperature toughness of austenitic high manganese lightweight steel. Thermec 2023 - International Conference on PROCESSING & MANUFACTURING OF ADVANCED MATERIALS, Vienna, Austria (2023)
Elkot, M.; Sun, B.; Ponge, D.; Raabe, D.: The deceit of steel strength ductility diagrams: A case study on high manganese lightweight steel. 7th International Conference of Engineering Against Failure ICEAF 2023, Spetses, Greece (2023)
Elkot, M.; Sun, B.; Zhou, X.; Ponge, D.; Raabe, D.: Grain boundary κ-carbides in high manganese lightweight steel: degradation assessment and potential solutions. 5th International High Manganese Steel Conference 2022, online, Linz, Austria (2022)
Sun, B.; Ponge, D.; Fazeli, F.; Scott, C.; Yue, S.; Raabe, D.: Revealing fracture mechanisms of medium manganese steels with and without delta-ferrite. 6th International Conference on Advanced Steels (ICAS 2018), Jeju, South Korea (2018)
International researcher team presents a novel microstructure design strategy for lean medium-manganese steels with optimized properties in the journal Science
This project studies the influence of grain boundary chemistry on mechanical behaviour using state-of-the-art micromechanical testing systems. For this purpose, we use Cu-Ag as a model system and compare the mechanical response/deformation behaviour of pure Cu bicrystals to that of Ag segregated Cu bicrystals.
The aim of this project is to develop novel nanostructured Fe-Co-Ti-X (X = Si, Ge, Sn) compositionally complex alloys (CCAs) with adjustable magnetic properties by tailoring microstructure and phase constituents through compositional and process tuning. The key aspect of this work is to build a fundamental understanding of the correlation between…
In this project, we aim to enhance the mechanical properties of an equiatomic CoCrNi medium-entropy alloy (MEA) by interstitial alloying. Carbon and nitrogen with varying contents have been added into the face-centred cubic structured CoCrNi MEA.
Hydrogen is a clean energy source as its combustion yields only water and heat. However, as hydrogen prefers to accumulate in the concentrated stress region of metallic materials, a few ppm Hydrogen can already cause the unexpected sudden brittle failure, the so-called “hydrogen embrittlement”. The difficulties in directly tracking hydrogen limits…