Welsch, E. D.; Haghighat, S. M. H.; Gutiérrez-Urrutia, I.; Raabe, D.: Investigation of nano-sized kappa carbide distribution in advanced austenitic lightweight high-Mn steels by coupled TEM and DDD simulations: Strengthening and dislocation-based mechanisms. 2nd International Conference on High Manganese Steels, Aachen, Germany (2014)
Haghighat, S. M. H.; Eggeler, G. F.; Raabe, D.: Mesoscale modelling of the influence of loading conditions on the dislocation mobility and creep process in single crystal Ni base superalloys. KTH Stockholm-Sweden, Stockholm, Sweden (2014)
Haghighat, S. M. H.; Eggeler, G.; Raabe, D.: Discrete Dislocation Dynamics Study of Creep Anisotropy in Single Crystal Ni Base Superalloys. MRS Fall Meeting, Bosten, USA (2013)
Haghighat, S. M. H.; Schäublin, R.; Raabe, D.: Molecular Dynamics Study of Obstacle Induced Hardening; From Nano-Sized Defects to Binary Junction. MRS Fall Meeting, Bosten, MA, USA (2013)
Haghighat, S. M. H.; Schäublin, R.; Raabe, D.: Atomistic study of forest hardening through binary dislocation junction in bcc-iron. 2013 MRS Spring Meeting, San Francisco, CA, USA (2013)
Haghighat, S. M. H.; Eggeler, G.; Raabe, D.: Discrete dislocation dynamics modeling of loading orientation effect on the low stress creep of single crystal Ni base superalloys. Intermetallics 2013, Bad Staffelstein, Germany (2013)
Haghighat, S. M. H.; Eggeler, G.; Raabe, D.: Primary creep of Ni base supealloys used in hot gas turbine blades. Alstom Company, Baden, Switzerland (2012)
Haghighat, S. M. H.; Eggeler, G.; Raabe, D.: Dislocation dynamics modeling of the glide-climb mobility of a ½ a0<110>{111} dislocation in interaction with γ’ precipitate in Ni-based superalloy. 4th International Conference on Dislocations, Budapest, Hungary (2012)
Haghighat, S. M. H.; Schäublin, R.: Perspective of multiscale simulation approach in the development of novel materials. Tarbiat Modares University, Tehran, Iran (2012)
Haghighat, S. M. H.; Schäublin, R.: Atomistic simulation and transmission electron microscopy of obstacle strengthening in iron. Sahand University of Technology, Tabri, Iran (2012)
Haghighat, S. M. H.; von Pezold, J.; Neugebauer, J.; Raabe, D.: Effect of local stress state on the glide of ½a₀<111> screw dislocation in bcc-Fe. 1st Austrian-German Workshop on Computational Materials Design, Kramsach, Austria (2012)
Schäublin, J.; Haghighat, S. M. H.: Simulation of the screw dislocation mobility in Fe by molecular dynamics. E-MRS Spring Meeting, Nice, France (2011)
Haghighat, S. M. H.; Schäublin, R.: Dislocations mechanisms in bcc-Fe; from atomistic to TEM observation. Workshop on ab initio Description of Iron and Steel: Mechanical properties, Ringberg Castle, Germany (2010)
Haghighat, S. M. H.; Reed, R. C.; Raabe, D.: Modeling of dislocation mechanisms and the influence of the γ/γ´lattice misfit on the dislocation assisted creep of high temperature Ni-base superalloys. 7th International Conference on Multiscale Materials Modeling , Berkeley, CA, USA (2014)
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…