Searched for: author:"Fang, H."
(1 - 9 of 9)
document
Shen, X. J. (author), Li, D. Z. (author), Tang, S. (author), Chen, J. (author), Fang, H. (author), Wang, G. D. (author)
It is still a big challenge to obtain excellent low-temperature toughness for bulk steel materials. Delamination is an effective method to improve low-temperature toughness. In the present study, delamination toughening in a low carbon microalloyed steel plate with elongated and ultrafine-grained microstructure rolled in the dual-phase region...
journal article 2019
document
Fang, H. (author)
Solid-state phase transformations in steels cover a broad range of aspects. The underlying physics behind these phase transformations usually include nucleation, diffusion, lattice reconstruction and interactions between solutes and grain boundaries and interfaces. These features and the fact that the events take place at high temperatures, in...
doctoral thesis 2019
document
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
document
Fang, H. (author), van der Zwaag, S. (author), van Dijk, N.H. (author)
The magnetic configuration of a ferromagnetic system with mono-disperse and poly-disperse distribution of magnetic particles with inter-particle interactions has been computed. The analysis is general in nature and applies to all systems containing magnetically interacting particles in a non-magnetic matrix, but has been applied to steel...
journal article 2018
document
Fang, H. (author), van der Zwaag, S. (author), van Dijk, N.H. (author)
We have analyzed the evolution of the ferrite fraction and average ferrite grain size during partial cyclic austenite-to-ferrite and ferrite-to-austenite phase transformations in an Fe-0.25C-2.1Mn (wt pct) steel using three-dimensional neutron depolarization (3DND). In the 3DND experiments, the ferrite fraction is derived from the rotation...
journal article 2018
document
Fang, H. (author), Mecozzi, M.G. (author), Brück, E.H. (author), van der Zwaag, S. (author), van Dijk, N.H. (author)
A 3D model has been developed to predict the average ferrite grain size and grain size distribution for an austenite-to-ferrite phase transformation during continuous cooling of an Fe-C-Mn steel. Using a Voronoi construction to represent the austenite grains, the ferrite is assumed to nucleate at the grain corners and to grow as spheres....
journal article 2018
document
Sun, W. W. (author), Fang, H. (author), van Dijk, N.H. (author), van der Zwaag, S. (author), Hutchinson, C. R. (author)
The precipitation of Au-rich precipitates on the external surfaces of Fe-Au alloys has been studied by scanning and transmission electron microscopy. The surface precipitates formed at elevated temperatures are found to self-organize in regular patterns and their growth rate is determined quantitatively. The observed surface precipitation at...
journal article 2017
document
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
document
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
Searched for: author:"Fang, H."
(1 - 9 of 9)