Results 301 to 310 of about 2,076,289 (344)
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Solidification behaviour of laser welded stainless steel
Journal of Materials Science Letters, 1985Etude effectuee sur des plaques de 2,5 mm d'epaisseur d'acier AISI 304 recuit, soudees en bout au laser a CO 2 . Observation de la microstructure et de la composition de phase par microscopie optique et electronique en transmission et par microsonde.
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The solidification behaviour of dilute aluminium–scandium alloys
Acta Materialia, 1998Abstract The solidification behaviour of dilute Sc containing Al alloys has been investigated. In binary Al–Sc alloys, Sc additions greater than the eutectic composition (0.55 wt%) were found to produce a remarkable refinement in the grain size of aluminium castings, of two orders of magnitude, due to the formation of the primary Al3Sc intermetallic ...
A.F Norman, P.B Prangnell, R.S McEwen
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Solidification behaviour of bulk glass-forming alloy systems
Journal of Alloys and Compounds, 2005Abstract The solidification behaviour and resultant microstructures of bulk glass forming ferrous (Fe 60 Co 8 Zr 10 Mo 5 W 2 B 15 ) and non-ferrous (Zr 65 Al 10 Ni 10 Cu 15 ) alloy systems have been investigated. It was shown that the suppression of the eutectic reaction during solidification ultimately leads to the formation of an amorphous ...
M.Vedat Akdeniz +2 more
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The Annealing Behaviour of Rapid Solidification Processed Al–Mo Alloys
Materials Science and Engineering, 1988Abstract Solid solutions of molybdenum in aluminium containing 0.7 and 2.2 at.% Mo, which have been prepared by melt spinning, have been annealed for a range of times at temperatures between 350 and 650°C. It has been found that annealing the 2.2 at.% Mo alloy results in the generation of dislocation networks which provide short-circuit diffusion ...
C.P. Chang, M.H. Loretto
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Rapid solidification behaviour of undercooled levitated Fe–Ge alloy droplets
Materials Science and Engineering: A, 2004The solidification behaviour of $Fe_{82}Ge_{18}$ and $Fe_{75}Ge_{25}$ alloys is studied by using an electromagnetic levitation facility. The maximum undercooling attained in the case of $Fe_{82}Ge_{18}$ alloy is 240 K. Growth velocity of $\alpha$- (bcc) phase is measured using a photodiode technique and shows two distinct regimes.
Biswas, K +6 more
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Fluid flow behaviour and solidification studies during ultrasonic gas atomization
Materials Science and Engineering, 1988Abstract Fluid flow behaviour during ultrasonic gas atomization was studied. The gas velocity was determined by total pressure measurement and Schlieren photography, and the metal powder particle velocity was calculated. The gas velocity reaches about 1700 m s−1 (Mach.
J. LIU +4 more
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Rapidly solidifed Al-Cr alloys: structure and decomposition behaviour
Journal of Materials Science, 1986Melt-spun ribbons of aluminium containing up to 15 wt% chromium were examined in the as-spun condition and after annealing. The more concentrated alloys contained multi-phase spherulites embedded in an α-Al matrix: chemical microanalysis showed the average composition of the spherulite core to be 22 ± 2 wt% chromium.
L. Bendersky +3 more
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Solidification behaviour during laser microcladding of Al–Si alloys
Surface and Coatings Technology, 2015Abstract The aim of the present work is to investigate features of low-density materials' structure formation during laser microcladding. Clad tracks with the submillimeter width were successfully produced by laser microcladding of the low-density Al–Si hypereutectic alloys.
S.N. Grigoriev +3 more
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Solidification behaviour of eutectic; naphthalene-p. chloronitrobenzene system
Journal of Crystal Growth, 1978Abstract The solidification behaviour of naphthalene-p.chloronitrobenzene has been studied using the current theories of crystallization. The logarithm of the product of growth rate and viscosity varies non-linearly with undercooling expressed as ( T Δ T ) -1 indicating that the growth rate is not controlled by the screw dislocation mechanism.
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Solidification behaviour and microstructure of A360-SIC P cast composites
Metallurgical Science and Tecnology, 2005In the present investigation, the solidification microstructure of Al based composites was studied. The materials investigated were a commercial A360 aluminium alloy and the corresponding composites reinforced with 10 and 20 vol. % SiC particles. The materials were cast under different conditions for a first set of laboratory tests, aimed at studying ...
ARNABOLDI, SERGIO +5 more
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