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Sloof, W.G. (author), Pei, R. (author), McDonald, S.A. (author), Fife, J.L. (author), Shen, L. (author), Boatemaa, L. (author), Farle, A.S. (author), Yan, K. (author), Zhang, X. (author), Van der Zwaag, S. (author), Lee, P.D. (author), Withers, P.J. (author)
MAX phase materials are emerging as attractive engineering materials in applications where the material is exposed to severe thermal and mechanical conditions in an oxidative environment. The Ti2AlC MAX phase possesses attractive thermomechanical properties even beyond a temperature of 1000 K. An attractive feature of this material is its...
journal article 2016
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Van der Zwaag, S. (author), Zhang, S. (author), Fang, H. (author), Bruck, E. (author), Van Dijk, N.H. (author)
We report the main findings of our work on the behaviour of binary Fe-Cu and Fe-Au model alloys designed to explore routes to create new creep resistant steels having an in-built ability to autonomously fill creep induced porosity at grain boundaries. The alloying elements were selected on the basis of their ability to be brought in...
conference paper 2016
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Lu, Q. (author), Xu, W. (author), Van der Zwaag, S. (author)
We report a computational 'alloy by design' approach which can significantly accelerate the design process and substantially reduce the development costs. This approach allows simultaneously optimization of alloy composition and heat treatment parameters based on the integration of thermodynamic, thermo-kinetics and a genetic algorithm...
conference paper 2016
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Khanbareh, H. (author), Schelen, J.B.J. (author), Van der Zwaag, S. (author), Groen, W.A. (author)
Pyroelectric properties of materials can be accurately determined by applying a new digital signal processing method on the discrete sampled data obtained with a temperature oscillation technique. The pyroelectric coefficient is calculated from the component of the generated current 90? out of phase with respect to the sinusoidal temperature...
journal article 2015
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Zhang, S. (author), Kwakernaak, C. (author), Tichelaar, F.D. (author), Sloof, W.G. (author), Kuzmina, M. (author), Herbig, M. (author), Raabe, D. (author), Brück, E. (author), Van der Zwaag, S. (author), Van Dijk, N.H. (author)
The autonomous repair mechanism of creep cavitation during high-temperature deformation has been investigated in Fe-Au and Fe-Au-B-N alloys. Combined electron-microscopy techniques and atom probe tomography reveal how the improved creep properties result from Au precipitation within the creep cavities, preferentially formed on grain boundaries...
journal article 2015
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Farahani, H. (author), Xu, W. (author), Van der Zwaag, S. (author)
In this research, the effects of Mn and Si concentration and that of the isothermal intercritical holding temperature on the austenite-to-ferrite (? ? ?) and the martensite-to-austenite (?? ? ?) phase transformations are studied for a series of Fe-C-Mn-Si steels with up to 7 wt pct Mn. The model is based on the local equilibrium (LE) concept....
journal article 2015
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De Jong, M. (author), Chen, W. (author), Angsten, T. (author), Jain, A. (author), Notestine, R. (author), Gamst, A. (author), Sluiter, M.H.F. (author), Krishna Ande, C. (author), Van der Zwaag, S. (author), Plata, J.J. (author), Toher, C. (author), Curtarolo, S. (author), Ceder, G. (author), Persson, K.A. (author), Asta, M. (author)
journal article 2015
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Dilner, D. (author), Lu, Q. (author), Mao, H. (author), Xu, W. (author), Van der Zwaag, S. (author), Selleby, M. (author)
This paper demonstrates the use of a new model consisting of a genetic algorithm in combination with thermodynamic calculations and analytical process models to minimize the processing time during a vacuum degassing treatment of liquid steel. The model sets multiple simultaneous targets for final S, N, O, Si and Al levels and uses the total slag...
journal article 2014
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Van der Zwaag, J. (author)
The sediment composition of the sea bed is of relevance for various coastal properties such as bed forms, beach slopes and marine ecology. Furthermore it may significantly influence the morphological evolution of the coast. The sediment sorting processes at natural beaches are, however, difficult to distinguish since there can be a both a large...
report 2014
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Blondé, R.J.P. (author), Jimenez-Melero, E. (author), Huizenga, R.M. (author), Zhao, L. (author), Wright, J. (author), Brück, E.H. (author), Van der Zwaag, S. (author), Van Dijk, N.H. (author)
The martensitic transformation behaviour of the metastable austenite phase in low-alloyed transformation-induced plasticity (TRIP) steels has been studied in situ using high-energy X-ray diffraction during deformation. The austenite stability during tensile deformation has been evaluated at different length scales. A powder diffraction analysis...
journal article 2014
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Blondé, R.J.P. (author), Jimenez-Melero, E. (author), Anusuya Ponnusami, S. (author), Zhao, L. (author), Schell, N. (author), Brück, E.H. (author), Van der Zwaag, S. (author), Van Dijk, N.H. (author)
While earlier studies on transformation-induced-plasticity (TRIP) steels focused on the determination of the austenite-to-martensite decomposition in uniform deformation or thermal fields, the current research focuses on the determination of the local retained austenite-to-martensite transformation behaviour in an inhomogeneous yet carefully...
journal article 2014
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Derelioglu, Z. (author), Ponnusami, S.A. (author), Turteltaub, S. (author), Van der Zwaag, S. (author), Sloof, W.G. (author)
Crack healing in ceramic thermal barrier coatings (TBCs) may be realized by embedding Mo-Si based particles in the thermal barrier coating. Upon cracking, these particles are exposed to oxygen that permeates through the top layer and the crack gap is filled with SiO2 which is produced from oxidation at high temperature. Due to its amorphous...
conference paper 2013
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Prajer, M. (author), Wu, X. (author), Garcia Espallargas, S.J. (author), Van der Zwaag, S. (author)
Polymers reinforced with high performance fibres are successfully replacing metal alloys in lightweight aircraft structures. A critical factor in structural design is the resistance of a structure to progressive damage which develops during its service time. The brittle nature of matrix cracking is the main source of composite failure initiating...
conference paper 2013
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Baldi, A. (author), Grande, A.M. (author), Bose, R.K. (author), Airoldi, A. (author), Garcia Espallargas, S.J. (author), Di Liandro, L. (author), Van der Zwaag, S. (author)
Several polymeric systems with intrinsic Self-Healing (SH) capabilities have been reported in literature. Many of them showed healing upon contact across the crack interface. Different parameters such as contact time, temperature, pressure or chemical activity determine the degree of healing obtained. In this work, a numerical simulation of the...
conference paper 2013
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Carabat, A.L. (author), Van der Zwaag, S. (author), Sloof, W.G. (author)
Easy crack propagation in oxide ceramic coatings limits their application in high temperature environment (e.g. such as engines and gas turbine components) [1]. In order to overcome this problem, incorporation of sacrificial particles into an oxide ceramic coating may be a viable option. Particles of silicon compounds, such as: Si3N4, SiC, MoSi2...
conference paper 2013
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Vega Vega, J.M. (author), Van der Zwaag, S. (author), Garcia Espallargas, S.J. (author)
Poly(ethylene-co-methacrylic acid) (EMAA) ionomers have shown healing capabilities in both ballistic and static tests. In previous studies it was shown that the degree of crosslinking (clusters) affects (positively or negatively) the healing under impact tests. Moreover, it has also been reported that the modification of the ionomers by...
conference paper 2013
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Kötteritzsch, J. (author), Hager, M.D. (author), Schubert, U.S. (author), Bose, R.K. (author), Garcia Espallargas, S.J. (author), Van der Zwaag, S. (author)
Because of its thermal reversibility, the retro-Diels-Alder (RDA) reaction represents an appealing possibility to produce self-healing polymers with well-defined architectures and tunable properties [1]. However, the polymer architecture for which the Diels-Alder (DA) reaction can best be used to contribute to the healing process is still not...
conference paper 2013
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Zhang, S. (author), Langelaan, G. (author), Schut, H. (author), Brück, E. (author), Van der Zwaag, S. (author), Van Dijk, N.H. (author)
Steels are among the most widely used construction materials as their mechanical properties can be tuned over a very wide range of desired combinations of strength formability and other properties. However, when exposed for long times to high temperatures steel components can exhibit premature and low-ductility creep fracture, which arises from...
conference paper 2013
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Duan, X. (author), Jia, D. (author), Yang, Z. (author), Zhou, Y. (author), Ouyang, J. (author), Sloof, W.G. (author), Van der Zwaag, S. (author)
Abstract only.
conference paper 2013
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Shen, L. (author), Li, S.B. (author), Van der Zwaag, S. (author), Sloof, W.G. (author)
The oxidation crack healing of Cr2AlC and Cr2(Al,Si)C was studied and compared with known healing of Ti2AlC. The oxidation induced crack healing of Ti2AlC is relatively fast and leads to full strength recovery, but the oxidation product contains besides ?-Al2O3 also undesired TiO2. However, when oxidizing Cr2AlC only ?-Al2O3 is formed, but full...
conference paper 2013
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