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and melt undercooling on wear rate of the sample were investigated. The worn surface of Ni-31.44%Pb was examined using scanning electron microscope (SEM) and X-ray photoelectron spectroscope (XPS... for the lower and larger undercooling, and plastic deformation and fracture for the medium undercooling. Key words: Ni-Pb monotectic alloy; high undercooling; wear rate; wear mechanism CLC number: TG115.5......
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; Abstract: Numerical simulation based on phase field method was performed to describe the solidification of silicon. The effect of anisotropy, undercooling and coupling parameter on dendrite growth shape... With further increasing the anisotropy value, steady state tip velocity decreases and the size is smaller. With the increase in the undercooling and coupling parameter, crystal grows from facet......
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Engineering, Tsinghua University, Beijing 100084, China) Abstract: The influence of undercooling and noise magnitude on dendritic sidebranching during crystal growth was investigated by simulation of a phase... the dendrite is thick, which suppresses the growth of its sidebranching and makes the dendrite take on the morphology of no sidebranching, but when the undercooling is great, the thermal diffusion layer......
inhibited by high undercooling and rapid solidification. Key words: Ni-Pb hypermonotectic alloy; monotectic cell; high undercooling; liquid-liquid phase separation; water-quenched microstructure... be fully inhibited and a homogeneous structure can be acquired[9]. It hence gives us an important edification whether the homogeneous hypermonotectic alloy can be prepared by high undercooling......
