Results 321 to 330 of about 128,560 (335)

Grain Growth in Zone-Refined Zinc

Canadian Metallurgical Quarterly, 1963
AbstractGrain-growth experiments have been performed using high-purity zone-refined zinc. The simple growth law D = (Kt)1/2 applies over the temperature range 360 – 415°C.It was found that the measured activation energy for grain growth is purity sensitive.
P. Niessen, W. C. Winegard, E. L Holmes
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Grain refinement in aluminium alloys

1999
This thesis is not available on this repository until the author agrees to make it public. If you are the author of this thesis and would like to make your work openly available, please contact us: thesis@repository.cam.ac.uk.
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Master Alloys for Grain Refinement

2019
Master alloys are routinely added into aluminum melts before casting for grain refinement purposes. The widely used master alloys contain titanium and boron in the forms of Al3Ti and TiB2 particles in an aluminum matrix. Upon addition into aluminum melts, Al3Ti dissolves into the aluminum melts and promotes the heterogeneous nucleation of the α-Al ...
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Grain growth in zone-refined iron

Canadian Metallurgical Quarterly, 1974
Abstract The results of a detailed study of isothermal grain growth in zone-refined iron in the temperature range 550 to 850°C are presented. The empirical growth law, D = Ktn, is obeyed and the time exponent, n, increases with temperature, from approximately 1/4 to 1/2.
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Nucleation Kinetics and Grain Refinement

2008
AbstractThis article discusses selected highlights of thermodynamic relationships during solidification and nucleation kinetics behavior in connection with the basis of nucleation treatments, such as grain refinement and inoculation, to provide a summary of nucleation phenomena during casting.
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Grain Refinement in Aluminum Alloys

2016
The published information on the mechanism of grain refinement by Ti and Ti + B additions is reviewed, with emphasis on the data in support of nucleation by TiAl3.
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Additives and Grain Refinement [PDF]

Journal of The Electrochemical Society, 1959
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Grain refinement in rapidly solidified alloys

Materials Science and Engineering: A, 1991
Abstract A significant reduction in grain size can be achieved in all types of rapid solidification processing, whether depending mainly on rapid external heat extraction or on bulk melt undercooling. The microstructural observations are reviewed for melt-spun ribbon for highly undercooled melts.
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Grain Refinement of Steels

JOM, 1963
The possible advantages and mechanisms of obtaining grain refinement in carbon, low-, and high-alloy steels are reviewed. The role of vibration and the addition of materials to provide heterogeneous nuclei formation and grain growth inhibition are discussed. The effect of composition on the solidification of steels is described.
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Ultrasonic Grain Refinement

2014
Georgy I. Eskin, Dmitry G. Eskin
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