Koyama, M.; Springer, H.; Merzlikin, S. V.; Tsuzaki, K.; Akiyama, E.; Raabe, D.: Hydrogen embrittlement associated with strain localization in a precipitation-hardened Fe–Mn–Al–C light weight austenitic steel. International Journal of Hydrogen Energy 39 (9), pp. 4634 - 4646 (2014)
Koyama, M.; Akiyama, E.; Tsuzaki, K.; Raabe, D.: Hydrogen-assisted failure in a twinning-induced plasticity steel studied under in situ hydrogen charging by electron channeling contrast imaging. Acta Materialia 61 (12), pp. 4607 - 4618 (2013)
Akiyama, E.; Stratmann, M.; Hassel, A. W.: Discrete electrochemical transients of aluminium alloys generated by slurry jet impingement. J. Phys. D: Appl. Phys. 39, pp. 3157 - 3164 (2006)
Akiyama, E.; Hassel, A. W.; Stratmann, M.: A study of current transients caused by single particle impact on electrodes. In: Proceed. Asian Pacific Corr. Contr. Conf. 13, pp. C02 1 - C02 8. (2003)
Koyama, M.; Tasan, C. C.; Akiyama, E.; Tsuzaki, K.; Raabe, D.: Influence of hydrogen on dual-phase steel micro-mechanics. 2nd International Workshop on Physics-Based Modelling of Material Properties & Experimental Observations, Antalya, Turkey (2013)
Hassel, A. W.; Akiyama, E.; Smith, A.; Tan, K. S.; Stratmann, M.: Dynamic and Quasi Static Particle Impingement in Flow Corrosion. COST F2 2nd Workshop „Local Flow Effects in Hydrodynamic Systems”, Paris, France (2003)
Akiyama, E.; Hassel, A. W.; Stratmann, M.: A study of current transients caused by single particle impact on electrodes. 13th Asian Pacific Corrosion Control Conference, Osaka, Japan (2003)
Hassel, A. W.; Akiyama, E.; Smith, A.; Tan, K. S.; Stratmann, M.: Dynamic and Quasi Static Particle Impingement in Flow Corrosion. Seminar an der Graduate School of Engineering der Universität von Hokkaido, Sapporo, Japan (2003)
Akiyama, E.; Hassel, A. W.; Stratmann, M.: Measurements of electrochemical responses caused by a single particle impact in slurry impingement. 50th Zairyo-to-Kankyo Meeting, Okinawa, Japan (2003)
Hydrogen in aluminium can cause embrittlement and critical failure. However, the behaviour of hydrogen in aluminium was not yet understood. Scientists at the Max-Planck-Institut für Eisenforschung were able to locate hydrogen inside aluminium’s microstructure and designed strategies to trap the hydrogen atoms inside the microstructure. This can…
Biological materials in nature have a lot to teach us when in comes to creating tough bio-inspired designs. This project aims to explore the unknown impact mitigation mechanisms of the muskox head (ovibus moschatus) at several length scales and use this gained knowledge to develop a novel mesoscale (10 µm to 1000 µm) metamaterial that can mimic the…
Microbiologically influenced corrosion (MIC) of iron by marine sulfate reducing bacteria (SRB) is studied electrochemically and surfaces of corroded samples have been investigated in a long-term project.
In this project we investigate the hydrogen distribution and desorption behavior in an electrochemically hydrogen-charged binary Ni-Nb model alloy. The aim is to study the role of the delta phase in hydrogen embrittlement of the Ni-base alloy 718.
Smaller is stronger” is well known in micromechanics, but the properties far from the quasi-static regime and the nominal temperatures remain unexplored. This research will bridge this gap on how materials behave under the extreme conditions of strain rate and temperature, to enhance fundamental understanding of their deformation mechanisms. The…
This project aims to investigate the influence of grain boundaries on mechanical behavior at ultra-high strain rates and low temperatures. For this micropillar compressions on copper bi-crystals containing different grain boundaries will be performed.
Oxidation and corrosion of noble metals is a fundamental problem of crucial importance in the advancement of the long-term renewable energy concept strategy. In our group we use state-of-the-art electrochemical scanning flow cell (SFC) coupled with inductively coupled plasma mass spectrometer (ICP-MS) setup to address the problem.
For understanding the underlying hydrogen embrittlement mechanism in transformation-induced plasticity steels, the process of damage evolution in a model austenite/martensite dual-phase microstructure following hydrogenation was investigated through multi-scale electron channelling contrast imaging and in situ optical microscopy.
We plan to investigate the rate-dependent tensile properties of 2D materials such as metal thin films and PbMoO4 (PMO) films by using a combination of a novel plan-view FIB based sample lift out method and a MEMS based in situ tensile testing platform inside a TEM.