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Brück, E.H. (author), Yibole, Hargen (author), Zhang, L. (author)
After almost 20 years of intensive research on magnetocaloric effects near room temperature, magnetic refrigeration with first-order magnetocaloric materials has come close to real-life applications. Many materials have been discussed as potential candidates to be used in multicaloric devices. However, phase transitions in ferroic materials...
journal article 2016
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Zhang, S. (author), Fang, H. (author), Gramsma, M. E. (author), Kwakernaak, C. (author), Sloof, W.G. (author), Tichelaar, F.D. (author), Brück, E.H. (author), van der Zwaag, S. (author), van Dijk, N.H. (author)
We have investigated the autonomous repair of creep damage by site-selective precipitation in a binary Fe-Mo alloy (6.2 wt pct Mo) during constant-stress creep tests at temperatures of 813 K, 823 K, and 838 K (540 °C, 550 °C, and 565 °C). Scanning electron microscopy studies on the morphology of the creep-failed samples reveal irregularly...
journal article 2016
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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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Miao, X.F. (author), Caron, L. (author), Roy, P. (author), Dung, N.H. (author), Zhang, L. (author), Kockelmann, W.A. (author), De Groot, R.A. (author), Van Dijk, N.H. (author), Brück, E. (author)
Neutron-diffraction experiments on the (Mn,Fe)2(P,Si)-type compounds have shown a site preference of Si atoms in the hexagonal structure. The degree of ordering of Si depends on the Si/P ratio, while it is independent of the Mn/Fe ratio. The ferromagnetic-paramagnetic magnetoelastic transition is closely related to the size of the magnetic...
journal article 2014
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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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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
document
Langelaan, G. (author), Zhang, S. (author), Brück, E. (author), Van der Zwaag, S. (author), Van Dijk, N.H. (author)
Abstract only.
conference paper 2013
document
Zhang, S. (author), Schut, H. (author), Brück, E. (author), Van der Zwaag, S. (author), Van Dijk, N.H. (author)
The role of deformation-induced defects and carbon addition on the copper precipitation during aging at 550 oC is investigated in high-purity Fe-Cu-B-N-C alloy samples by Coincidence Doppler Broadening. In samples with 0% and 8% cold pre-strain, the influence of tensile pre-deformation on the precipitation kinetics of copper is studied. The...
journal article 2013
document
Dung, N.H. (author), Zhang, L. (author), Ou, Z.Q. (author), Zhao, L. (author), Van Eijck, L. (author), Mulders, A.M. (author), Avdeev, M. (author), Suard, E. (author), Van Dijk, N.H. (author), Brück, E. (author)
Using high-resolution neutron diffraction measurements for Mn-rich hexagonal Mn-Fe-P-Si compounds, we show that the substitution of Mn for Fe on the 3f sites results in a linear decrease of the Fe/Mn(3f) magnetic moments, while the Mn(3g) magnetic moments remain constant. With increasing temperature, the Mn(3g) magnetic moments show almost no...
journal article 2012
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Dung, N.H. (author), Zhang, L. (author), Ou, Z.Q. (author), Brück, E. (author)
We report on structural, magnetic, and magnetocaloric properties of MnxFe1.95?xP0.50Si0.50 (x???1.10) compounds. With increasing the Mn:Fe ratio, a first-order magneto-elastic transition gradually changes into a first-order magneto-structural transition via a second-order magnetic transition. The study also shows that thermal hysteresis can be...
journal article 2011
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Brück, E.H. (author), Trung, N.T. (author), Zhang, L. (author), Caron, L. (author), Buschow, K.H.J. (author)
The MnCoGe alloy can crystallize in either the hexagonal Ni2In- or the orthorhombic TiNiSi-type of structure. In both phases MnCoGe behaves like a typical ferromagnet with a second-order magnetic phase transition. For MnCoGeBx with B on interstitial positions, we discover a giant magnetocaloric effect associated with a single first-order...
journal article 2010
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Trung, N.T. (author), Biharie, V. (author), Zhang, L. (author), Caron, L. (author), Buschow, K.H.J. (author), Brück, E.H. (author)
Substitution of some Cr for Mn atoms in MnCoGe was employed to control the magnetic and structural transitions in this alloy to coincide, leading to a single first-order magnetostructural transition from the ferromagnetic to the paramagnetic state with a giant magnetocaloric effect observed near room temperature. Further increase in the Cr...
journal article 2010
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Liu, X.G. (author), Or, S.W. (author), Li, B. (author), Ou, Z.Q. (author), Zhang, L. (author), Zhamg, Q. (author), Geng, D.Y. (author), Yang, F. (author), Li, D. (author), Brück, E.H. (author), Zhang, Z.D. (author)
journal article 2010
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