Results 21 to 30 of about 502,495 (311)

Three-dimensional phase field modeling of columnar to equiaxed transition in directional solidification of Inconel 718 alloy

Journal of Crystal Growth, 2020
Understanding the columnar to equiaxed transition (CET) is vital in production of materials with superior properties using casting, welding, and additive manufacturing processes.
Seyed Amin Nabavizadeh, Mohsen Eshraghi, S. Felicelli   +2 more
semanticscholar   +1 more source

Directional solidification with interface dissipation [PDF]

Physical Review A, 1991
The front dynamics during directional solidification of a dilute binary mixture with noninstantaneous interface kinetic attachment is investigated in the weakly and highly nonlinear regimes. In the linear regime we find that, even for small enough kinetic coefficient, the most unstable mode is appreciably modified. With the help of multiscale analysis,
Saito, Y., Müller-Krumbhaar, H., Misbah, C., Classen, A.   +3 more
openaire   +3 more sources

Preparation and Growth Characterization of Al2Cu Phase Crystal with the Single Orientation Under Directional Solidification [PDF]

Materials Research, 2018
Through decreasing the sample size, the regular faceted rectangular Al2Cu phase crystal was prepared under directional solidification. Effects of sample size on the microstructure morphologies and orientations of intermetallic Al2Cu phase crystal growth ...
Ka Gao, Yueyang Xu, Wenzheng Song, Li Guan, Mingliang Li, Kewei Li, Xiaoqin Guo, Rui Zhang   +7 more
doaj   +1 more source

Removal of Fe impurities from Al alloy scraps by electromagnetic directional solidification combined with Si addition

Journal of Materials Research and Technology, 2023
The removal of Fe from Al alloy scraps is the main challenge for their recycling because the excess of Fe usually forms needle-like phases in the Al alloys, which reduces their mechanical properties.
Yakun Zhang, Yun Lei, Yongsheng Ren, Wenhui Ma   +3 more
doaj   +1 more source

Microstructure and Crystallographic Texture of Laser Additive Manufactured Nickel-Based Superalloys with Different Scanning Strategies

Crystals, 2021
Control of solidification structure and crystallographic texture during metal additive manufacturing is a challenging work which attracts the increasing interest of researchers.
Xingbo Liu, Hui Xiao, Wenjia Xiao, Lijun Song   +3 more
doaj   +1 more source

Microgravity studies of solidification patterns in model transparent alloys onboard the International Space Station

npj Microgravity, 2023
We review recent in situ solidification experiments using nonfaceted model transparent alloys in science-in-microgravity facilities onboard the International Space Station (ISS), namely the Transparent Alloys (TA) apparatus and the Directional ...
S. Akamatsu, S. Bottin-Rousseau, V. T. Witusiewicz, U. Hecht, M. Plapp, A. Ludwig, J. Mogeritsch, M. Şerefoğlu, N. Bergeon, F. L. Mota, L. Sturz, G. Zimmermann, S. McFadden, W. Sillekens   +13 more
doaj   +1 more source

Research progress on microstructure and property regulation of ultra-high temperature oxide eutectic ceramics by high gradient directional solidification technology

Xibei Gongye Daxue Xuebao, 2022
With the rapid development of aerospace and other high-tech fields, a new generation of high perfor-mance, high efficiency ultrahigh temperature structural materials and their preparation technologies increasingly becomes the focus of the development of ...
SHEN Zhonglin, LIU Yuan, SU Haijun, ZHAO Di, LIU Haifang   +4 more
doaj   +1 more source

Alternating Tip Splitting in Directional Solidification [PDF]

Physical Review Letters, 2001
Physical Review ...
Utter, B., Ragnarsson, R., Bodenschatz, E.   +2 more
openaire   +3 more sources

Onset of sidebranching in directional solidification [PDF]

Physical Review E, 2010
We use a computationally efficient phase-field formulation [B. Echebarria, Phys. Rev. E 70, 061604 (2004)] to investigate the origin and dynamics of sidebranching in directional solidification for realistic parameters of a dilute alloy previously studied experimentally [M. Gorgelin and A. Pocheau, Phys. Rev. E 57, 3189 (1998)].
Echebarría Domínguez, Blas, Karma, Alain, Gurevich, Sebastian   +2 more
openaire   +4 more sources

Numerical simulation on directional solidification of Al-Ni-Co alloy based on FEM [PDF]

China Foundry, 2010
The ratio, of the temperature gradient at the solidification front to the solidification rate of solid-liquid interface, plays a large part in columnar grain growth.
Yang Zhili, Chen Dengming, Tian Shilong
doaj