Results 191 to 200 of about 461,303 (248)

Solidification and leaching behaviours of Cr6+ in sludge ceramsite

Journal of Hazardous Materials, 2008
Making lightweight ceramsite with sewage sludge is a new effective approach for disposal of sludge. However, there is a concern as to whether the heavy metals such as Cr6+ in sewage sludge can be solidified in ceramsite after sintering. The configuration of Cr6+ in ceramsite was analyzed by X-ray diffraction (XRD) and leaching tests were conducted to ...
Jinlong Zou, G R Xu, G R Xu
exaly   +3 more sources

Study on the solidification cracking behaviour of high strength aluminum alloy welds: Effects of alloying elements and solidification behaviours

Journal of Materials Science, 1996
The solidification cracking susceptibility of the 7000 series Al-Zn-Mg high strength aluminum alloy has been studied. The cracking behaviour of the specimens were evaluated by a Tig-a-Ma-Jig Varestraint test process under various augmented strain conditions.
Soo Woo Nam
exaly   +2 more sources

Solidification Behaviour of the Al2Cu Phase

International Journal of Materials Research, 1996
The A1-Cu phase diagram was redetermined in the concentration range between 31 and 37.5 at.% Cu applying differential thermal analysis, magnetothermal analysis and optical microscopy. The solubility of the Al 2 Cu phase which is formed in a peritectic reaction at 592° C ranges at 549° C from 32.05 to 32.6 at.% Cu and at 250° C from 32.4 to 32.8 at.% Cu.
Tilo Gödecke, Ferdinand Sommer
openaire   +1 more source

The Solidification Behaviour of Al-Mn Melts.

Journal of Non-Crystalline Solids, 1990
Abstract Small liquid droplets of Al 1−x Mn x (x = 8, 11.8, 17, 21.5 at.%), with diameters in the range 250 μm – 1000 μm have been undercooled and solidified by containerless processing during free fall in a drop tube. Undercoolings larger than 150 K have been estimated. The solidified droplets show crystalline phases and metastable quasicrystalline
Kreis, J., Herlach, D. M., Alexander, H. (1), Weiss, W. (1)   +3 more
openaire   +3 more sources

A complexity in the solidification behaviour of molten Y3Al5O12

Journal of Crystal Growth, 1979
At high degrees of undercooling, it is shown that the solidification behaviour of molten Y3Al5O12 can depart substantially from that predicted by the equilibrium-phase relationships. This leads to the formation of a two-phase perovskite/α-alumina mixture, which is ceramic and opaque in appearance, in preference to transparent garnet material obtained ...
B. Cockayne, B. Lent
openaire   +1 more source

Solidification behaviour of droplets in spray deposition

Powder Metallurgy, 2005
In spray deposition, a stream of molten metal is atomised with an inert gas to form a spray of molten droplets; these are then accelerated towards a substrate where they impinge and consolidate. Near-net shape products can be manufactured by technologies involving solidification and droplet consolidation. In order to maximise the metallurgical benefits
S. N. Sahu, S. Harikishore, S. C. Koria
openaire   +1 more source

Solidification behaviour of TiAl-based alloys studied by directional solidification technique

Intermetallics, 2011
Abstract Solidification behaviour of TiAl-based alloys with the nominal chemical composition Ti–46Al–8Ta and Ti–46Al–8Nb (at.%) was studied at steady- and unsteady-state conditions in Y 2 O 3 moulds using Bridgman solidification technique. The effect of growth parameters (growth rate V and temperature gradient G L ) on primary solidification ...
J. Lapin, Z. Gabalcová
openaire   +1 more source

Facetting behaviour of Al2Cu during solidification

Journal of Crystal Growth, 1981
Abstract The shapes of the solid-liquid interfaces of Al2Cu in front of various Al-Cu liquid alloys were observed using in situ electron microscopy during solidification or scanning electron microscopy afterwards. The change in morphology (from non faceted at the eutectic composition to faceted at the Al2Cu composition) allowed us to sort the facets ...
R. Hamar, C. Lemaignan
openaire   +1 more source

Solidification behaviour of undercooled equiatomic FeCuNi alloy

Journal of Alloys and Compounds, 2020
Abstract Studies on solidification of equiatomic multi-component alloys are essential in developing melt-route processing of high entropy alloys. The extent of undercooling during processing controls microstructure evolution. In this study, we present solidification studies on undercooled equiatomic FeCuNi alloy carried out using melt fluxing ...
M.R. Rahul, Gandham Phanikumar
openaire   +1 more source

Solidification Behaviour of a H21 Tool Steel

Advanced Materials Research, 2014
Solidification behaviour of a H21 tool steel has been studied. The aim of this work is to give better understanding of the as cast microstructure of the steel. The investigated H21 tool steel was made using induction vacuum furnace with air cooling. The microstructure observation was carried out using optical and electron microscopy.
Meilinda Nurbanasari, Panos Tsakiropoulos, Eric J. Palmiere   +2 more
openaire   +1 more source