Results 31 to 40 of about 267,967 (278)

Growth of potassium tantalate (KTaO3) crystals by directional solidification [PDF]

open access: yes, 2013
Potassium tantalate (KTaO3) crystals were grown by directional solidification from various compositions of K2CO3-Ta2O5 melt. When raw materials with the stoichiometric composition (K2CO3:Ta2O5=50:50 mol%) were used, K6Ta10.8O30 crystallized as the ...
Takenaka, Takayuki   +4 more
core   +1 more source

The columnar to equiaxed transition of horizontal unsteady-state directionally solidified Al-Si alloys [PDF]

open access: yesMaterials Research, 2014
Experiments were conducted to investigate the influence of thermal parameters on the columnar to equiaxed transition during the horizontal unsteady-state directional solidification of Al-Si alloys.
Diego B. Carvalho   +5 more
doaj   +2 more sources

Phase field method study on the directional solidification microstructure of a Fe–C alloy under forced convection

open access: yes工程科学学报, 2023
A specific columnar crystal structure is obtained using the directional solidification technique, which has a substantial effect on the optimization of the axial mechanical properties of the alloy.
Hong-bo ZENG   +4 more
doaj   +1 more source

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

open access: yesMaterials 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   +7 more
doaj   +1 more source

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

open access: yesJournal 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   +3 more
doaj   +1 more source

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

open access: yesCrystals, 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   +3 more
doaj   +1 more source

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

open access: yesnpj 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   +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

open access: yesXibei 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   +4 more
doaj   +1 more source

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

open access: yesChina 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  

Solidification behaviour and mechanical properties of cast Mg-alloys and Al-based particulate metal matrix composites under intensive shearing [PDF]

open access: yes, 2011
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Magnesium alloys, as the lightest of all structural metallic materials, and aluminium-based particulate metal matrix composites (PMMCs), offering unified ...
Tzamtzis, Spyridon
core   +7 more sources

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