Searched for: author:"Versteylen, C.D."
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Fang, H. (author), Szymanski, N. (author), Versteylen, C.D. (author), Cloetens, P. (author), Kwakernaak, C. (author), Sloof, W.G. (author), Tichelaar, F.D. (author), Balachandran, S. (author), Herbig, M. (author), Brück, E.H. (author), van der Zwaag, S. (author), van Dijk, N.H. (author)
When metals are mechanically loaded at elevated temperatures for extended periods of time, creep damage will occur in the form of cavities at grain boundaries. In the present experiments it is demonstrated that in binary iron-tungsten alloys creep damage can be self healed by selective precipitation of a W-rich phase inside these cavities. Using...
journal article 2019
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Versteylen, C.D. (author)
Advances in self-healing creep steels are driven by the understanding of its mechanism. Previous work on self-healing creep metals has shown selective precipitation inside the creep cavities, which has a beneficial effect on the creep lifetime. This effect occurswhen a solute supersaturation exists at the creep temperature. In the case of self...
doctoral thesis 2018
document
Versteylen, C.D. (author), Sluiter, M.H.F. (author), van Dijk, N.H. (author)
A self-consistent model is applied to predict the creep cavity growth and strain rates in metals from the perspective of self-healing. In this model, the creep cavity growth rate is intricately linked to the strain rate. The self-healing process causes precipitates to grow inside creep cavities. Due to the Kirkendall effect, a diffusional...
journal article 2018
document
Versteylen, C.D. (author), Szymański, N. K. (author), Sluiter, M.H.F. (author), van Dijk, N.H. (author)
In recently discovered self healing creep steels, open-volume creep cavities are filled by the precipitation of supersaturated solute. These creep cavities form on the grain boundaries oriented perpendicular to the applied stress. The presence of a free surface triggers a flux of solute from the matrix, over the grain boundaries towards the...
journal article 2018
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Versteylen, C.D. (author), van Dijk, N.H. (author), Sluiter, M.H.F. (author)
The diffusivities of substitutional impurity elements in iron have been computed with ab inito electronic density functional techniques, using exchange-correlation functional PW91. Excess entropies and the attempt frequency for a jump were determined by calculating phonon frequencies in the harmonic approximation. The influence of the degree of...
journal article 2017
Searched for: author:"Versteylen, C.D."
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